<?xml version="1.0" encoding="UTF-8"?> <rss version="2.0" xmlns:media="http://search.yahoo.com/mrss/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/"> <channel> <title>CERN Document Server</title> <link>https://cds.cern.ch</link> <description>CERN Document Server latest documents</description> <language>en</language> <pubDate>Sat, 30 Nov 2024 03:56:31 GMT</pubDate> <category></category> <generator>Invenio 1.1.3.1106-62468</generator> <ttl>360</ttl> <atom:link rel="self" href="/rss?f=author&amp;ln=bg&amp;p=He%2C+Xu-Cheng" /> <opensearch:totalResults>21</opensearch:totalResults> <opensearch:startIndex>1</opensearch:startIndex> <opensearch:itemsPerPage>25</opensearch:itemsPerPage> <image> <url>https://cds.cern.ch/img/site_logo_rss.png</url> <title>CERN Document Server</title> <link>https://cds.cern.ch</link> </image> <atom:link rel="search" href="https://cds.cern.ch/opensearchdescription" type="application/opensearchdescription+xml" title="Content Search" /> <textInput> <title>Search </title> <description>Search this site:</description> <name>p</name> <link>https://cds.cern.ch/search</link> </textInput> <item> <title>Molecular Understanding of the Enhancement in Organic Aerosol Mass at High Relative Humidity</title> <link>https://cds.cern.ch/record/2891665</link> <description>The mechanistic pathway by which high relative humidity (RH) affects gas–particle partitioning remains poorly understood, although many studies report increased secondary organic aerosol (SOA) yields at high RH. Here, we use real-time, molecular measurements of both the gas and particle phase to provide a mechanistic understanding of the effect of RH on the partitioning of biogenic oxidized organic molecules (from α-pinene and isoprene) at low temperatures (243 and 263 K) at the CLOUD chamber at CERN. We observe increases in SOA mass of 45 and 85% with increasing RH from 10–20 to 60–80% at 243 and 263 K, respectively, and attribute it to the increased partitioning of semi-volatile compounds. At 263 K, we measure an increase of a factor 2–4 in the concentration of C10H16O2–3, while the particle-phase concentrations of low-volatility species, such as C10H16O6–8, remain almost constant. This results in a substantial shift in the chemical composition and volatility distribution toward less oxygenated and more volatile species at higher RH (e.g., at 263 K, O/C ratio = 0.55 and 0.40, at RH = 10 and 80%, respectively). By modeling particle growth using an aerosol growth model, which accounts for kinetic limitations, we can explain the enhancement in the semi-volatile fraction through the complementary effect of decreased compound activity and increased bulk-phase diffusivity. Our results highlight the importance of particle water content as a diluting agent and a plasticizer for organic aerosol growth.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Surdu, Mihnea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bell, David M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Li, Dandan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucía</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Scholz, Wiebke</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lopez, Brandon</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Piedehierro, Ana A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ataei, Farnoush</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bertozzi, Barbara</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bogert, Pia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brasseur, Zoé</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Höhler, Kristina</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Korhonen, Kimmo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Krechmer, Jordan E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mahfouz, Naser G A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Massabò, Dario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Umo, Nsikanabasi Silas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vogel, Franziska</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Saathoff, Harald</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Möhler, Ottmar</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stratmann, Frank</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Welti, André</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Riva, Matthieu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">El Haddad, Imad</dc:creator> <pubDate>Thu, 14 Mar 2024 16:52:53 GMT</pubDate> <guid>https://cds.cern.ch/record/2891665</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2891665/files/surdu-et-al-2023-molecular-understanding-of-the-enhancement-in-organic-aerosol-mass-at-high-relative-humidity.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>An intercomparison study of four different techniques for measuring the chemical composition of nanoparticles</title> <link>https://cds.cern.ch/record/2891194</link> <description>Currently, the complete chemical characterization of nanoparticles (&amp;lt; 100 nm) represents an analytical challenge, since these particles are abundant in number but have negligible mass. Several methods for particle-phase characterization have been recently developed to better detect and infer more accurately the sources and fates of sub-100 nm particles, but a detailed comparison of different approaches is missing. Here we report on the chemical composition of secondary organic aerosol (SOA) nanoparticles from experimental studies of α-pinene ozonolysis at −50, −30, and −10 ∘C and intercompare the results measured by different techniques. The experiments were performed at the Cosmics Leaving OUtdoor Droplets (CLOUD) chamber at the European Organization for Nuclear Research (CERN). The chemical composition was measured simultaneously by four different techniques: (1) thermal desorption–differential mobility analyzer (TD–DMA) coupled to a NO3- chemical ionization–atmospheric-pressure-interface–time-of-flight (CI–APi–TOF) mass spectrometer, (2) filter inlet for gases and aerosols (FIGAERO) coupled to an I− high-resolution time-of-flight chemical ionization mass spectrometer (HRToF-CIMS), (3) extractive electrospray Na+ ionization time-of-flight mass spectrometer (EESI-TOF), and (4) offline analysis of filters (FILTER) using ultra-high-performance liquid chromatography (UHPLC) and heated electrospray ionization (HESI) coupled to an Orbitrap high-resolution mass spectrometer (HRMS). Intercomparison was performed by contrasting the observed chemical composition as a function of oxidation state and carbon number, by estimating the volatility and comparing the fraction of volatility classes, and by comparing the thermal desorption behavior (for the thermal desorption techniques: TD–DMA and FIGAERO) and performing positive matrix factorization (PMF) analysis for the thermograms. We found that the methods generally agree on the most important compounds that are found in the nanoparticles. However, they do see different parts of the organic spectrum. We suggest potential explanations for these differences: thermal decomposition, aging, sampling artifacts, etc. We applied PMF analysis and found insights of thermal decomposition in the TD–DMA and the FIGAERO.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucía</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Surdu, Mihnea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lopez, Brandon</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Thoma, Markus</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bräkling, Steffen</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Buchholz, Angela</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Müller, Tatjana</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Granzin, Manuel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bell, David M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brasseur, Zoé</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mahfouz, Naser G A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Piedehierro, Ana A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Scholz, Wiebke</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tian, Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Umo, Nsikanabasi Silas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Welti, André</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Haddad, Imad El</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vogel, Alexander L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <pubDate>Sat, 09 Mar 2024 05:40:06 GMT</pubDate> <guid>https://cds.cern.ch/record/2891194</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2891194/files/acp-23-6613-2023.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Measurement of the collision rate coefficients between atmospheric ions and multiply charged aerosol particles in the CERN CLOUD chamber</title> <link>https://cds.cern.ch/record/2891176</link> <description>Aerosol particles have an important role in Earth's radiation balance and climate, both directly and indirectly through aerosol–cloud interactions. Most aerosol particles in the atmosphere are weakly charged, affecting both their collision rates with ions and neutral molecules, as well as the rates by which they are scavenged by other aerosol particles and cloud droplets. The rate coefficients between ions and aerosol particles are important since they determine the growth rates and lifetimes of ions and charged aerosol particles, and so they may influence cloud microphysics, dynamics, and aerosol processing. However, despite their importance, very few experimental measurements exist of charged aerosol collision rates under atmospheric conditions, where galactic cosmic rays in the lower troposphere give rise to ion pair concentrations of around 1000 cm−3. Here we present measurements in the CERN CLOUD chamber of the rate coefficients between ions and small (&amp;lt;10 nm) aerosol particles containing up to 9 elementary charges, e. We find the rate coefficient of a singly charged ion with an oppositely charged particle increases from $2.0 (0.4-4.4) \times 10^{-6} \textrm{cm}^3 \textrm{s}^{-1}$ to $30.6 (24.9-45.1) × 10{-6} \textrm{cm}^3 \textrm{s}^{-1}$ for particles with charges of 1 to 9 e, respectively, where the parentheses indicate the ±1σ uncertainty interval. Our measurements are compatible with theoretical predictions and show excellent agreement with the model of Gatti and Kortshagen (2008).</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mahfouz, Naser G A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schulze, Benjamin C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mathot, Serge</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brasseur, Zoé</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Granzin, Manuel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lopez, Brandon</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Müller, Tatjana</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Piedehierro, Ana A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schervish, Meredith</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tian, Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Umo, Nsikanabasi S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Welti, André</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Haddad, Imad El</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mirme, Sander</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <pubDate>Sat, 09 Mar 2024 05:39:13 GMT</pubDate> <guid>https://cds.cern.ch/record/2891176</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2891176/files/acp-23-6703-2023.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Iodine oxoacids enhance nucleation of sulfuric acid particles in the atmosphere</title> <link>https://cds.cern.ch/record/2886038</link> <description>The main nucleating vapor in the atmosphere is thought to be sulfuric acid (H2SO4), stabilized by ammonia (NH3). However, in marine and polar regions, NH3 is generally low, and H2SO4 is frequently found together with iodine oxoacids [HIOx, i.e., iodic acid (HIO3) and iodous acid (HIO2)]. In experiments performed with the CERN CLOUD (Cosmics Leaving OUtdoor Droplets) chamber, we investigated the interplay of H2SO4 and HIOx during atmospheric particle nucleation. We found that HIOx greatly enhances H2SO4(-NH3) nucleation through two different interactions. First, HIO3 strongly binds with H2SO4 in charged clusters so they drive particle nucleation synergistically. Second, HIO2 substitutes for NH3, forming strongly bound H2SO4-HIO2 acid-base pairs in molecular clusters. Global observations imply that HIOx is enhancing H2SO4(-NH3) nucleation rates 10- to 10,000-fold in marine and polar regions.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Iyer, Siddharth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xie, Hong-Bin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zhang, Rongjie</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amanatidis, Stavros</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Piedehierro, Ana A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brasseur, Zoé</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucía</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chu, Biwu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Haddad, Imad El</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Granzin, Manuel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Jokinen, Tuija</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kemppainen, Deniz</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kong, Weimeng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Krechmer, Jordan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lopez, Brandon</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ma, Fangfang</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mahfouz, Naser G A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Massabò, Dario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ranjithkumar, Ananth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti P</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schobesberger, Siegfried</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Scholz, Wiebke</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schulze, Benjamin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Surdu, Mihnea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Thakur, Roseline C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Welti, André</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kurtén, Theo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <pubDate>Wed, 10 Jan 2024 05:26:10 GMT</pubDate> <guid>https://cds.cern.ch/record/2886038</guid> <media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2886038/files/IodineSulfur_manuscript_CCBY.gif?subformat=icon"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2886038/files/IodineSulfur_manuscript_CCBY.pdf"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2886038/files/IodineSulfur_manuscript_CCBY.jpg?subformat=icon-180"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2886038/files/IodineSulfur_manuscript_CCBY.jpg?subformat=icon-1440"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2886038/files/IodineSulfur_manuscript_CCBY.jpg?subformat=icon-640"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2886038/files/IodineSulfur_manuscript_CCBY.jpg?subformat=icon-700"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Role of sesquiterpenes in biogenic new particle formation</title> <link>https://cds.cern.ch/record/2875158</link> <description>Biogenic vapors form new particles in the atmosphere, affecting global climate. The contributions of monoterpenes and isoprene to new particle formation (NPF) have been extensively studied. However, sesquiterpenes have received little attention despite a potentially important role due to their high molecular weight. Via chamber experiments performed under atmospheric conditions, we report biogenic NPF resulting from the oxidation of pure mixtures of β-caryophyllene, α-pinene, and isoprene, which produces oxygenated compounds over a wide range of volatilities. We find that a class of vapors termed ultralow-volatility organic compounds (ULVOCs) are highly efficient nucleators and quantitatively determine NPF efficiency. When compared with a mixture of isoprene and monoterpene alone, adding only 2% sesquiterpene increases the ULVOC yield and doubles the formation rate. Thus, sesquiterpene emissions need to be included in assessments of global aerosol concentrations in pristine climates where biogenic NPF is expected to be a major source of cloud condensation nuclei.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Fischer, Lukas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vogel, Alexander L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ahonen, Lauri</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bianchi, Federico</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Daellenbach, Kaspar R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">De Vivo, Jenna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dias, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hoyle, Christopher R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kangasluoma, Juha</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kvashnin, Aleksander</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nie, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Quéléver, Lauriane L J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Saathoff, Harald</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tome, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Molteni, Ugo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Robert</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wimmer, Daniela</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yan, Chao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zha, Qiaozhi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Gordon, Hamish</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Haddad, Imad El</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <pubDate>Tue, 10 Oct 2023 06:36:55 GMT</pubDate> <guid>https://cds.cern.ch/record/2875158</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2875158/files/document.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>NO at low concentration can enhance the formation of highly oxygenated biogenic molecules in the atmosphere</title> <link>https://cds.cern.ch/record/2862114</link> <description>The interaction between nitrogen monoxide (NO) and organic peroxy radicals (RO$_{2}$) greatly impacts the formation of highly oxygenated organic molecules (HOM), the key precursors of secondary organic aerosols. It has been thought that HOM production can be significantly suppressed by NO even at low concentrations. Here, we perform dedicated experiments focusing on HOM formation from monoterpenes at low NO concentrations (0 – 82 pptv). We demonstrate that such low NO can enhance HOM production by modulating the RO$_{2}$ loss and favoring the formation of alkoxy radicals that can continue to autoxidize through isomerization. These insights suggest that HOM yields from typical boreal forest emissions can vary between 2.5%-6.5%, and HOM formation will not be completely inhibited even at high NO concentrations. Our findings challenge the notion that NO monotonically reduces HOM yields by extending the knowledge of RO$_{2}$-NO interactions to the low-NO regime. This represents a major advance towards an accurate assessment of HOM budgets, especially in low-NO environments, which prevails in the pre-industrial atmosphere, pristine areas, and the upper boundary layer.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nie, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yan, Chao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yang, Liwen</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Roldin, Pontus</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Liu, Yuliang</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vogel, Alexander L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Molteni, Ugo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bianchi, Federico</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Draper, Danielle C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Jokinen, Tuija</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nichman, Leonid</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mizelli-Ojdanic, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Quéléver, Lauriane L J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schallhart, Simon</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Robert</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Penglin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Li, Haiyan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Huang, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Qi, Ximeng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lou, Sijia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Liu, Tengyu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chi, Xuguang</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Haddad, Imad El</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ehn, Mikael</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ding, Aijun</dc:creator> <pubDate>Fri, 16 Jun 2023 05:13:15 GMT</pubDate> <guid>https://cds.cern.ch/record/2862114</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2862114/files/document.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>The gas-phase formation mechanism of iodic acid as an atmospheric aerosol source</title> <link>https://cds.cern.ch/record/2852840</link> <description>AbstractIodine is a reactive trace element in atmospheric chemistry that destroys ozone and nucleates particles. Iodine emissions have tripled since 1950 and are projected to keep increasing with rising O3 surface concentrations. Although iodic acid (HIO3) is widespread and forms particles more efficiently than sulfuric acid, its gas-phase formation mechanism remains unresolved. Here, in CLOUD atmospheric simulation chamber experiments that generate iodine radicals at atmospherically relevant rates, we show that iodooxy hypoiodite, IOIO, is efficiently converted into HIO3 via reactions (R1) IOIO + O3 → IOIO4 and (R2) IOIO4 + H2O → HIO3 + HOI + (1)O2. The laboratory-derived reaction rate coefficients are corroborated by theory and shown to explain field observations of daytime HIO3 in the remote lower free troposphere. The mechanism provides a missing link between iodine sources and particle formation. Because particulate iodate is readily reduced, recycling iodine back into the gas phase, our results suggest a catalytic role of iodine in aerosol formation.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Iyer, Siddharth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Koenig, Theodore K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Christopher F</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Valiev, Rashid</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Beck, Lisa</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bell, David M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucía</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chiu, Randall</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chu, Biwu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kemppainen, Deniz</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Krechmer, Jordan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kvashnin, Alexandr</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Li, Zijun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Müller, Tatjana</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ranjithkumar, Ananth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vazquez-Pufleau, Miguel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nie, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Qing</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brioude, Jérome</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Haddad, Imad El</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kurten, Theo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <pubDate>Sat, 18 Mar 2023 05:52:20 GMT</pubDate> <guid>https://cds.cern.ch/record/2852840</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2852840/files/s41557-022-01067-z (1).pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>High Gas-Phase Methanesulfonic Acid Production in the OH-Initiated Oxidation of Dimethyl Sulfide at Low Temperatures</title> <link>https://cds.cern.ch/record/2852836</link> <description>Dimethyl sulfide (DMS) influences climate via cloud condensation nuclei (CCN) formation resulting from its oxidation products (mainly methanesulfonic acid, MSA, and sulfuric acid, H2SO4). Despite their importance, accurate prediction of MSA and H2SO4 from DMS oxidation remains challenging. With comprehensive experiments carried out in the Cosmics Leaving Outdoor Droplets (CLOUD) chamber at CERN, we show that decreasing the temperature from +25 to −10 °C enhances the gas-phase MSA production by an order of magnitude from OH-initiated DMS oxidation, while H2SO4 production is modestly affected. This leads to a gas-phase H2SO4-to-MSA ratio (H2SO4/MSA) smaller than one at low temperatures, consistent with field observations in polar regions. With an updated DMS oxidation mechanism, we find that methanesulfinic acid, CH3S(O)OH, MSIA, forms large amounts of MSA. Overall, our results reveal that MSA yields are a factor of 2−10 higher than those predicted by the widely used Master Chemical Mechanism (MCMv3.3.1), and the NOx effect is less significant than that of temperature. Our updated mechanism explains the high MSA production rates observed in field observations, especially at low temperatures, thus, substantiating the greater importance of MSA in the natural sulfur cycle and natural CCN formation. Our mechanism will improve the interpretation of present-day and historical gas-phase H2SO4/MSA measurements.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Scholz, Wiebke</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zhou, Putian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Surdu, Mihnea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ataei, Farnoush</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bell, David M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bertozzi, Barbara</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brasseur, Zoé</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucía</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chu, Biwu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Granzin, Manuel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Guida, Roberto</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Iyer, Siddharth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kemppainen, Deniz</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kong, Weimeng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Krechmer, Jordan E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lopez, Brandon</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mahfouz, Naser G A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Massabò, Dario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Müller, Tatjana</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Piedehierro, Ana A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Roldin, Pontus</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schobesberger, Siegfried</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Umo, Nsikanabasi Silas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Welti, André</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wollesen de Jonge, Robin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zust, Felix</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Möhler, Ottmar</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">El-Haddad, Imad</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bianchi, Federico</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <pubDate>Sat, 18 Mar 2023 05:52:18 GMT</pubDate> <guid>https://cds.cern.ch/record/2852836</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2852836/files/acs.est.2c05154.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Critical Role of Iodous Acid in Neutral Iodine Oxoacid Nucleation</title> <link>https://cds.cern.ch/record/2852826</link> <description>Nucleation of neutral iodine particles has recently been found to involve both iodic acid (HIO3) and iodous acid (HIO2). However, the precise role of HIO2 in iodine oxoacid nucleation remains unclear. Herein, we probe such a role by investigating the cluster formation mechanisms and kinetics of (HIO3)m(HIO2)n (m = 0−4, n = 0−4) clusters with quantum chemical calculations and atmospheric cluster dynamics modeling. When compared with HIO3, we find that HIO2 binds more strongly with HIO3 and also more strongly with HIO2. After accounting for ambient vapor concentrations, the fastest nucleation rate is predicted for mixed HIO3−HIO2 clusters rather than for pure HIO3 or HIO2 ones. Our calculations reveal that the strong binding results from HIO2 exhibiting a base behavior (accepting a proton from HIO3) and forming stronger halogen bonds. Moreover, the binding energies of (HIO3)m(HIO2)n clusters show a far more tolerant choice of growth paths when compared with the strict stoichiometry required for sulfuric acid−base nucleation. Our predicted cluster formation rates and dimer concentrations are acceptably consistent with those measured by the Cosmic Leaving Outdoor Droplets (CLOUD) experiment. This study suggests that HIO2 could facilitate the nucleation of other acids beyond HIO3 in regions where base vapors such as ammonia or amines are scarce.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zhang, Rongjie</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xie, Hong-Bin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ma, Fangfang</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Jingwen</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Iyer, Siddharth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kurtén, Theo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <pubDate>Sat, 18 Mar 2023 05:52:10 GMT</pubDate> <guid>https://cds.cern.ch/record/2852826</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2852826/files/acs.est.2c04328.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Survival of newly formed particles in haze conditions</title> <link>https://cds.cern.ch/record/2842570</link> <description>Intense new particle formation events are regularly observed under highly polluted conditions, despite the high loss rates of nucleated clusters. Higher than expected cluster survival probability implies either ineffective scavenging by pre-existing particles or missing growth mechanisms. Here we present experiments performed in the CLOUD chamber at CERN showing particle formation from a mixture of anthropogenic vapours, under condensation sinks typical of haze conditions, up to 0.1 s$^{-1}$ . We find that new particle formation rates substantially decrease at higher concentrations of pre-existing particles, demonstrating experimentally for the first time that molecular clusters are efficiently scavenged by larger sized particles. Additionally, we demonstrate that in the presence of supersaturated gas-phase nitric acid (HNO$_3$) and ammonia (NH$_3$), freshly nucleated particles can grow extremely rapidly, maintaining a high particle number concentration, even in the presence of a high condensation sink. Such high growth rates may explain the high survival probability of freshly formed particles under haze conditions. We identify under what typical urban conditions HNO$_3$ and NH$_3$ can be expected to contribute to particle survival during haze.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rorup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kong, Weimeng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Scholz, Wiebke</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bell, David M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bertozzi, Barbara</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chu, Biwu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Carracedo, Loic Gonzalez</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Granzin, Manuel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kemppainen, Deniz</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kurten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lampimaki, Markus</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petaja, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stozhkov, Yuri</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tome, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mohler, Ottmar</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Haddad, Imad El</dc:creator> <pubDate>Wed, 30 Nov 2022 09:59:53 GMT</pubDate> <guid>https://cds.cern.ch/record/2842570</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2842570/files/d2ea00007e.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Molecular characterization of ultrafine particles using extractive electrospray time-of-flight mass spectrometry</title> <link>https://cds.cern.ch/record/2842555</link> <description>Aerosol particles negatively affect human health while also having climatic relevance due to, for example, their ability to act as cloud condensation nuclei. Ultrafine particles (diameter D$_p$ &amp;lt; 100 nm) typically comprise the largest fraction of the total number concentration, however, their chemical characterization is difficult because of their low mass. Using an extractive electrospray time-of-flight mass spectrometer (EESI-TOF), we characterize the molecular composition of freshly nucleated particles from naphthalene and b-caryophyllene oxidation products at the CLOUD chamber at CERN. We perform a detailed intercomparison of the organic aerosol chemical composition measured by the EESI-TOF and an iodide adduct chemical ionization mass spectrometer equipped with a filter inlet for gases and aerosols (FIGAERO-I-CIMS). We also use an aerosol growth model based on the condensation of organic vapors to show that the chemical composition measured by the EESI-TOF is consistent with the expected condensed oxidation products. This agreement could be further improved by constraining the EESI-TOF compound-specific sensitivity or considering condensed-phase processes. Our results show that the EESI-TOF can obtain the chemical composition of particles as small as 20 nm in diameter with mass loadings as low as hundreds of ng m$^{-3}$ in real time. This was until now difficult to achieve, as other online instruments are often limited by size cutoffs, ionization/thermal fragmentation and/or semicontinuous sampling. Using real-time simultaneous gas- and particle-phase data, we discuss the condensation of naphthalene oxidation products on a molecular level.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Surdu, Mihnea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pospisilova, Veronika</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hoyle, Christopher R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bell, David M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lopez-Hilfiker, Felipe</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ahonen, Lauri R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kvashnin, Aleksandr</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Molteni, Ugo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nie, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Quéléver, Lauriane L J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Robert</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yan, Chao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Prevot, Andre S H</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Slowik, Jay G</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">el Haddad, Imad el</dc:creator> <pubDate>Wed, 30 Nov 2022 09:59:17 GMT</pubDate> <guid>https://cds.cern.ch/record/2842555</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2842555/files/d1ea00050k.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Synergistic HNO$_{3}$–H$_{2}$SO$_{4}$–NH$_{3}$ upper tropospheric particle formation</title> <link>https://cds.cern.ch/record/2816486</link> <description>New particle formation in the upper free troposphere is a major global source of cloud condensation nuclei (CCN). However, the precursor vapours that drive the process are not well understood. With experiments performed under upper tropospheric conditions in the CERN CLOUD chamber, we show that nitric acid, sulfuric acid and ammonia form particles synergistically, at rates that are orders of magnitude faster than those from any two of the three components. The importance of this mechanism depends on the availability of ammonia, which was previously thought to be efficiently scavenged by cloud droplets during convection. However, surprisingly high concentrations of ammonia and ammonium nitrate have recently been observed in the upper troposphere over the Asian monsoon region. Once particles have formed, co-condensation of ammonia and abundant nitric acid alone is sufficient to drive rapid growth to CCN sizes with only trace sulfate. Moreover, our measurements show that these CCN are also highly efficient ice nucleating particles—comparable to desert dust. Our model simulations confirm that ammonia is efficiently convected aloft during the Asian monsoon, driving rapid, multi-acid HNO$_{3}$–H$_{2}$SO$_{4}$–NH$_{3}$ nucleation in the upper troposphere and producing ice nucleating particles that spread across the mid-latitude Northern Hemisphere.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bertozzi, Barbara</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schulze, Benjamin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bardakov, Roman</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Scholz, Wiebke</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lopez, Brandon</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ataei, Farnoush</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bogert, Pia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brasseur, Zoé</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucía</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">De Menezes, Louis-Philippe</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ekman, Annica M L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Carracedo, Loïc Gonzalez</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Granzin, Manuel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Guida, Roberto</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Höhler, Kristina</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Korhonen, Kimmo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Krechmer, Jordan E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mahfouz, Naser G A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Massabò, Dario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mathot, Serge</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Müller, Tatjana</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Piedehierro, Ana A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pozzer, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ranjithkumar, Ananth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schervish, Meredith</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schobesberger, Siegfried</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stozhkov, Yuri</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Umo, Nsikanabasi Silas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vogel, Franziska</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Robert</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Welti, André</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Riipinen, Ilona</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Gordon, Hamish</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lelieveld, Jos</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">El-Haddad, Imad</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Christoudias, Theodoros</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Möhler, Ottmar</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <pubDate>Sun, 24 Jul 2022 04:30:10 GMT</pubDate> <guid>https://cds.cern.ch/record/2816486</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2816486/files/document.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Determination of the collision rate coefficient between charged iodic acid clusters and iodic acid using the appearance time method</title> <link>https://cds.cern.ch/record/2812713</link> <description>Ions enhance the formation rate of atmospheric aerosol particles, which play an important role in Earth’s radiative balance. Ion-induced nucleation involves the stepwise accretion of neutral monomers onto a molecular cluster containing an ion, which helps to stabilize the cluster against evaporation. Although theoretical frameworks exist to calculate the collision rate coefficients between neutral molecules and ions, they need to be experimentally confirmed, ideally under atmospherically relevant conditions of around 1000 ion pairs cm−3. Here, in experiments performed under atmospheric conditions in the CERN CLOUD chamber, we have measured the collision rate coefficients between neutral iodic acid (HIO3) monomers and charged iodic acid molecular clusters containing up to 11 iodine atoms. Three methods were analytically derived to calculate ion-polar molecule collision rate coefficients. After evaluation with a kinetic model, the 50% appearance time method is found to be the most robust. The measured collision rate coefficient, averaged over all iodine clusters, is (2.4 ± 0.8)×10−9 cm3 s−1, which is close to the expectation from the surface charge capture theory.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Iyer, Siddharth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ylisirniö, Arttu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Peltola, Maija</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kontkanen, Jenni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pesonen, Janne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ahonen, Lauri R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amanatidis, Stavros</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Beck, Lisa</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bianchi, Federico</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brilke, Sophia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chiu, Randall</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dias, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Haddad, Imad El</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Fischer, Lukas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kangasluoma, Juha</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Koenig, Theodore K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kubečka, Jakub</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kvashnin, Aleksandr</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Leiminger, Markus</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Li, Zijun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nie, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Partoll, Eva</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Salo, Vili-Taneli</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schuchmann, Simone</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Steiner, Gerhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stozhkov, Yuri</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Väisänen, Olli</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vazquez-Pufleau, Miguel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wimmer, Daniela</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yan, Chao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Qing</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtinen, Kari</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nieminen, Tuomo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schobesberger, Siegfried</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kerminen, Veli-Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kurtén, Theo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <pubDate>Sun, 19 Jun 2022 04:02:00 GMT</pubDate> <guid>https://cds.cern.ch/record/2812713</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2812713/files/02786826.2020.pdf"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers</title> <link>https://cds.cern.ch/record/2808731</link> <description>Iodine species are important in the marine atmosphere for oxidation and new-particle formation. Understanding iodine chemistry and iodine new-particle formation requires high time resolution, high sensitivity, and simultaneous measurements of many iodine species. Here, we describe the application of a bromide chemical ionization mass spectrometer (Br-CIMS) to this task. During the iodine oxidation experiments in the Cosmics Leaving OUtdoor Droplets (CLOUD) chamber, we have measured gas-phase iodine species and sulfuric acid using two BrCIMS, one coupled to a Multi-scheme chemical IONization inlet (Br-MION-CIMS) and the other to a Filter Inlet for Gasses and AEROsols inlet (Br-FIGAERO-CIMS). From offline calibrations and intercomparisons with other instruments, we have quantified the sensitivities of the Br-MIONCIMS to HOI, I2, and H2SO4 and obtained detection limits of 5.8 × 106 , 3.8 × 105 , and 2.0 × 105 molec. cm−3 , respectively, for a 2 min integration time. From binding energy calculations, we estimate the detection limit for HIO3 to be 1.2 × 105 molec. cm−3 , based on an assumption of maximum sensitivity. Detection limits in the Br-FIGAERO-CIMS are around 1 order of magnitude higher than those in the BrMION-CIMS; for example, the detection limits for HOI and HIO3 are 3.3 × 107 and 5.1 × 106 molec. cm−3 , respectively. Our comparisons of the performance of the MION inlet and the FIGAERO inlet show that bromide chemical ionization mass spectrometers using either atmospheric pressure or reduced pressure interfaces are well-matched to measuring iodine species and sulfuric acid in marine environments.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Iyer, Siddharth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Maier, Norbert</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kurtén, Theo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <pubDate>Fri, 06 May 2022 04:25:01 GMT</pubDate> <guid>https://cds.cern.ch/record/2808731</guid> <media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808731/files/amt-14-4187-2021.gif?subformat=icon"/> <media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808731/files/amt-14-4187-2021-supplement.gif?subformat=icon"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808731/files/amt-14-4187-2021.pdf"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808731/files/amt-14-4187-2021-supplement.pdf"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808731/files/amt-14-4187-2021.jpg?subformat=icon-700"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808731/files/amt-14-4187-2021.jpg?subformat=icon-180"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808731/files/amt-14-4187-2021-supplement.jpg?subformat=icon-700"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808731/files/amt-14-4187-2021-supplement.jpg?subformat=icon-180"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>The driving factors of new particle formation and growth in the polluted boundary layer</title> <link>https://cds.cern.ch/record/2808725</link> <description>New particle formation (NPF) is a significant source of atmospheric particles, affecting climate and air quality. Understanding the mechanisms involved in urban aerosols is important to develop effective mitigation strategies. However, NPF rates reported in the polluted boundary layer span more than 4 orders of magnitude, and the reasons behind this variability are the subject of intense scientific debate. Multiple atmospheric vapours have been postulated to participate in NPF, including sulfuric acid, ammonia, amines and organics, but their relative roles remain unclear. We investigated NPF in the CLOUD chamber using mixtures of anthropogenic vapours that simulate polluted boundary layer conditions. We demonstrate that NPF in polluted environments is largely driven by the formation of sulfuric acid–base clusters, stabilized by the presence of amines, high ammonia concentrations and lower temperatures. Aromatic oxidation products, despite their extremely low volatility, play a minor role in NPF in the chosen urban environment but can be important for particle growth and hence for the survival of newly formed particles. Our measurements quantitatively account for NPF in highly diverse urban environments and explain its large observed variability. Such quantitative information obtained under controlled laboratory conditions will help the interpretation of future ambient observations of NPF rates in polluted atmospheres.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hoyle, Christopher R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Garmash, Olga</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Molteni, Ugo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ahonen, Lauri R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bauer, Paulus S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Beck, Lisa</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bell, David</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bianchi, Federico</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brilke, Sophia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chiu, Randall</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dias, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Gordon, Hamish</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Koenig, Theodore K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lampilahti, Janne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Li, Zijun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mai, Huajun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mathot, Serge</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nie, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Partoll, Eva</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pospisilova, Veronika</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Quéléver, Lauriane L J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schobesberger, Siegfried</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schuchmann, Simone</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stozhkov, Yuri</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vazquez-Pufleau, Miguel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Robert</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weitz, Lena</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wimmer, Daniela</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yan, Chao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Penglin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Qing</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zha, Qiaozhi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zhou, Xueqin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Carslaw, Ken</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">El Haddad, Imad</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <pubDate>Fri, 06 May 2022 04:24:58 GMT</pubDate> <guid>https://cds.cern.ch/record/2808725</guid> <media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808725/files/acp-21-14275-2021.gif?subformat=icon"/> <media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808725/files/acp-21-14275-2021-supplement.gif?subformat=icon"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808725/files/acp-21-14275-2021.pdf"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808725/files/acp-21-14275-2021-supplement.pdf"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808725/files/acp-21-14275-2021.jpg?subformat=icon-700"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808725/files/acp-21-14275-2021.jpg?subformat=icon-180"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808725/files/acp-21-14275-2021-supplement.jpg?subformat=icon-700"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2808725/files/acp-21-14275-2021-supplement.jpg?subformat=icon-180"/> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Chemical composition of nanoparticles from α-pinene nucleation and the influence of isoprene and relative humidity at low temperature</title> <link>https://cds.cern.ch/record/2807912</link> <description>Biogenic organic precursors play an important role in atmospheric new particle formation (NPF). One of the major precursor species is α-pinene, which upon oxidation can form a suite of products covering a wide range of volatilities. Highly oxygenated organic molecules (HOMs) comprise a fraction of the oxidation products formed. While it is known that HOMs contribute to secondary organic aerosol (SOA) formation, including NPF, they have not been well studied in newly formed particles due to their very low mass concentrations. Here we present gas- and particle-phase chemical composition data from experimental studies of α-pinene oxidation, including in the presence of isoprene, at temperatures (−50 and −30$^{◦}$C) and relative humidities (20 % and 60 %) relevant in the upper free troposphere. The measurements took place at the CERN Cosmics Leaving Outdoor Droplets (CLOUD) chamber. The particle chemical composition was analyzed by a thermal desorption differential mobility analyzer (TD-DMA) coupled to a nitrate chemical ionization– atmospheric pressure interface–time-of-flight (CI-APi-TOF) mass spectrometer. CI-APi-TOF was used for particle- and gas-phase measurements, applying the same ionization and detection scheme. Our measurements revealed the presence of C$_{8−10}$ monomers and C$_{18−20}$ dimers as the major compounds in the particles (diameter up to ∼ 100 nm). Particularly, for the system with isoprene added, C$_{5}$ (C$_{5}$H$_{10}$O$_{5−7}$) and C$_{15}$ compounds (C$_{15}$H$_{24}$O$_{5−10}$) were detected. This observation is consistent with the previously observed formation of such compounds in the gas phase. However, although the C$_{5}$ and C$_{15}$ compounds do not easily nucleate, our measurements indicate that they can still contribute to the particle growth at free tropospheric conditions. For the experiments reported here, most likely isoprene oxidation products enhance the growth of particles larger than 15 nm. Additionally, we report on the nucleation rates measured at 1.7 nm (J1.7 nm) and compared with previous studies, we found lower J1.7 nm values, very likely due to the higher α-pinene and ozone mixing ratios used in the present study</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucía</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Müller, Tatjana</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Granzin, Manuel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ataei, Farnoush</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bertozzi, Barbara</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brasseur, Zoé</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chiu, Randall</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chu, Biwu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Gonzalez Carracedo, Loïc</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kong, Weimeng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan P</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lopez, Brandon</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mahfouz, Naser G A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Massabò, Dario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Molteni, Ugo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Piedehierro, Ana A</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schervish, Meredith</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Scholz, Wiebke</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schulze, Benjamin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stozhkov, Yuri</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Surdu, Mihnea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tian, Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vogt, Steffen</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Welti, André</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yonghong, Wang</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yusheng, Wu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">El Haddad, Imad</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Höhler, Kristina</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Möhler, Ottmar</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Saathoff, Harald</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <pubDate>Fri, 29 Apr 2022 04:15:12 GMT</pubDate> <guid>https://cds.cern.ch/record/2807912</guid> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Enhanced growth rate of atmospheric particles from sulfuric acid</title> <link>https://cds.cern.ch/record/2801567</link> <description>In the present-day atmosphere, sulfuric acid is the most important vapour for aerosol particle formation and initial growth. However, the growth rates of nanoparticles ( &amp;lt; 10 nm) from sulfuric acid remain poorly measured. Therefore, the effect of stabilizing bases, the contribution of ions and the impact of attractive forces on molecular collisions are under debate. Here, we present precise growth rate measurements of uncharged sulfuric acid particles from 1.8 to 10 nm, performed under atmospheric conditions in the CERN (European Organization for Nuclear Research) CLOUD chamber. Our results show that the evaporation of sulfuric acid particles above 2 nm is negligible, and growth proceeds kinetically even at low ammonia concentrations. The experimental growth rates exceed the hard-sphere kinetic limit for the condensation of sulfuric acid. We demonstrate that this results from van der Waals forces between the vapour molecules and particles and disentangle it from charge–dipole interactions. The magnitude of the enhancement depends on the assumed particle hydration and collision kinetics but is increasingly important at smaller sizes, resulting in a steep rise in the observed growth rates with decreasing size. Including the experimental results in a global model, we find that the enhanced growth rate of sulfuric acid particles increases the predicted particle number concentrations in the upper free troposphere by more than 50 %.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ranjithkumar, Ananth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Gordon, Hamish</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ehrhart, Sebastian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pichelstorfer, Lukas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nieminen, Tuomo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brilke, Sophia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Beck, Lisa</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bräkling, Steffen</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo Murillo, Lucía</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chu, Biwu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dias, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">El Haddad, Imad</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Fischer, Lukas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Gonzalez Carracedo, Loic</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Koenig, Theodore K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kong, Weimeng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Leiminger, Markus</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Li, Zijun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Müller, Tatjana</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nie, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Partoll, Eva</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti P</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schobesberger, Siegfried</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schuchmann, Simone</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Steiner, Gerhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stozhkov, Yuri</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vazquez-Pufleau, Miguel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wimmer, Daniela</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wlasits, Peter J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Qing</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Carslaw, Kenneth S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lelieveld, Jos</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <pubDate>Tue, 15 Feb 2022 05:02:45 GMT</pubDate> <guid>https://cds.cern.ch/record/2801567</guid> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Molecular understanding of new-particle formation from $\alpha$-pinene between −50 and +25 °C</title> <link>https://cds.cern.ch/record/2801559</link> <description>Highly oxygenated organic molecules (HOMs) contribute substantially to the formation and growth of atmospheric aerosol particles, which affect air quality, human health and Earth’s climate. HOMs are formed by rapid, gasphase autoxidation of volatile organic compounds (VOCs) such as α-pinene, the most abundant monoterpene in the atmosphere. Due to their abundance and low volatility, HOMs can play an important role in new-particle formation (NPF) and the early growth of atmospheric aerosols, even without any further assistance of other low-volatility compounds such as sulfuric acid. Both the autoxidation reaction forming HOMs and their NPF rates are expected to be strongly dependent on temperature. However, experimental data on both effects are limited. Dedicated experiments were performed at the CLOUD (Cosmics Leaving OUtdoor Droplets) chamber at CERN to address this question. In this study, we show that a decrease in temperature (from +25 to −50 ◦C) results in a reduced HOM yield and reduced oxidation state of the products, whereas the NPF rates (J1.7 nm) increase substantially. Measurements with two different chemical ionization mass spectrometers (using nitrate and protonated water as reagent ion, respectively) provide the molecular composition of the gaseous oxidation products, and a two-dimensional volatility basis set (2D VBS) model provides their volatility distribution. The HOM yield decreases with temperature from 6.2 % at 25 ◦C to 0.7 % at −50 ◦C. However, there is a strong reduction of the saturation vapor pressure of each oxidation state as the temperature is reduced. Overall, the reduction in volatility with temperature leads to an increase in the nucleation rates by up to 3 orders of magnitude at −50 ◦C compared with 25 ◦C. In addition, the enhancement of the nucleation rates by ions decreases with decreasing temperature, since the neutral molecular clusters have increased stability against evaporation. The resulting data quantify how the interplay between the temperature-dependent oxidation pathways and the associated vapor pressures affect biogenic NPF at the molecular level. Our measurements, therefore, improve our understanding of pure biogenic NPF for a wide range of tropospheric temperatures and precursor concentrations.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Scholz, Wiebke</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Fischer, Lukas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Almeida, João</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bauer, Paulus S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Beck, Lisa</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bergen, Anton</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bianchi, Federico</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bräkling, Steffen</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brilke, Sophia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chu, Biwu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dias, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Draper, Danielle C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">El-Haddad, Imad</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Frege, Carla</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Gonzalez-Carracedo, Loic</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Gordon, Hamish</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Granzin, Manuel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hakala, Jani</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hoyle, Christopher R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kong, Weimeng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan P</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Leiminger, Markus</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mai, Huajun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Molteni, Ugo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nichman, Leonid</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nie, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ojdanic, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Partoll, Eva</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Quéléver, Lauriane L J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ranjithkumar, Ananth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti P</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schallhart, Simon</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schobesberger, Siegfried</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schuchmann, Simone</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Steiner, Gerhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stozhkov, Yuri</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vazquez-Pufleau, Miguel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vogel, Alexander L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Robert</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yan, Chao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Penglin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Qing</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zhou, Xueqin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <pubDate>Tue, 15 Feb 2022 05:02:33 GMT</pubDate> <guid>https://cds.cern.ch/record/2801559</guid> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Photo-oxidation of Aromatic Hydrocarbons Produces Low-Volatility Organic Compounds</title> <link>https://cds.cern.ch/record/2801425</link> <description>To better understand the role of aromatic hydrocarbons in new-particle formation, we measured the particle-phase abundance and volatility of oxidation products following the reaction of aromatic hydrocarbons with OH radicals. For this we used thermal desorption in an iodide-adduct Time-of-Flight Chemical-Ionization Mass Spectrometer equipped with a Filter Inlet for Gases and AEROsols (FIGAERO-ToF-CIMS). The particle-phase volatility measurements confirm that oxidation products of toluene and naphthalene can contribute to the initial growth of newly formed particles. Toluene-derived (C$_7$) oxidation products have a similar volatility distribution to that of α-pinene-derived (C$_{10}$) oxidation products, while naphthalene-derived (C$_{10}$) oxidation products are much less volatile than those from toluene or α-pinene; they are thus stronger contributors to growth. Rapid progression through multiple generations of oxidation is more pronounced in toluene and naphthalene than in α-pinene, resulting in more oxidation but also favoring functional groups with much lower volatility per added oxygen atom, such as hydroxyl and carboxylic groups instead of hydroperoxide groups. Under conditions typical of polluted urban settings, naphthalene may well contribute to nucleation and the growth of the smallest particles, whereas the more abundant alkyl benzenes may overtake naphthalene once the particles have grown beyond the point where the Kelvin effect strongly influences the condensation driving force.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Qing</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Penglin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vogel, Alexander L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, Antonio</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baumgartner, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brilke, Sophia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dias, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Garmash, Olga</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hoyle, Christopher R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kvashnin, Alexander</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Fischer, Lukas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Molteni, Ugo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pospisilova, Veronika</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Quéléver, Lauriane L J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weitz, Lena</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">El-Haddad, Imad</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <pubDate>Sat, 12 Feb 2022 05:25:11 GMT</pubDate> <guid>https://cds.cern.ch/record/2801425</guid> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Role of iodine oxoacids in atmospheric aerosol nucleation</title> <link>https://cds.cern.ch/record/2752324</link> <description>Iodic acid (HIO3) is known to form aerosol particles in coastal marine regions, but predicted nucleation and growth rates are lacking. Using the CERN CLOUD (Cosmics Leaving Outdoor Droplets) chamber, we find that the nucleation rates of HIO3 particles are rapid, even exceeding sulfuric acid–ammonia rates under similar conditions. We also find that ion-induced nucleation involves IO3− and the sequential addition of HIO3 and that it proceeds at the kinetic limit below +10°C. In contrast, neutral nucleation involves the repeated sequential addition of iodous acid (HIO2) followed by HIO3, showing that HIO2 plays a key stabilizing role. Freshly formed particles are composed almost entirely of HIO3, which drives rapid particle growth at the kinetic limit. Our measurements indicate that iodine oxoacid particle formation can compete with sulfuric acid in pristine regions of the atmosphere.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xu-Cheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tham, Yee Jun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dada, Lubna</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Finkenzeller, Henning</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stolzenburg, Dominik</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Iyer, Siddharth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Simon, Mario</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kürten, Andreas</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Shen, Jiali</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rörup, Birte</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rissanen, Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schobesberger, Siegfried</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Koenig, Theodore K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Jokinen, Tuija</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sarnela, Nina</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Beck, Lisa J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Almeida, João</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amanatidis, Stavros</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ataei, Farnoush</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bertozzi, Barbara</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bianchi, Federico</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brilke, Sophia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Caudillo, Lucía</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chen, Dexian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chiu, Randall</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chu, Biwu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dias, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ding, Aijun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Duplissy, Jonathan</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Haddad, Imad El</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Carracedo, Loïc Gonzalez</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Granzin, Manuel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hansel, Armin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Heinritzi, Martin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Hofbauer, Victoria</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Junninen, Heikki</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kangasluoma, Juha</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kemppainen, Deniz</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kim, Changhyuk</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kong, Weimeng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Krechmer, Jordan E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kvashin, Aleksander</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Laitinen, Totti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lee, Chuan Ping</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Lehtipalo, Katrianne</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Leiminger, Markus</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Li, Zijun</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna E</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marie, Guillaume</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Marten, Ruby</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mathot, Serge</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mauldin, Roy L</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Mentler, Bernhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Möhler, Ottmar</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Müller, Tatjana</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nie, Wei</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Onnela, Antti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Petäjä, Tuukka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Pfeifer, Joschka</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Philippov, Maxim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ranjithkumar, Ananth</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Saiz-Lopez, Alfonso</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Salma, Imre</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Scholz, Wiebke</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schuchmann, Simone</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Schulze, Benjamin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Steiner, Gerhard</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Stozhkov, Yuri</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tauber, Christian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Tomé, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Thakur, Roseline C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Väisänen, Olli</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Vazquez-Pufleau, Miguel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Yan, Chao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Qing</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ylisirniö, Arttu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zha, Qiaozhi</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zhou, Putian</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kerminen, Veli-Matti</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kurtén, Theo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sipilä, Mikko</dc:creator> <pubDate>Wed, 17 Feb 2021 05:31:37 GMT</pubDate> <guid>https://cds.cern.ch/record/2752324</guid> <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/" xml:lang="fr"/> <dc:hasPart xmlns:dc="http://purl.org/dc/elements/1.1/">['']</dc:hasPart> <dc:hasVersion xmlns:dc="http://purl.org/dc/elements/1.1/"/> </item> <item> <title>Rapid growth of new atmospheric particles by nitric acid and ammonia condensation</title> <link>https://cds.cern.ch/record/2725883</link> <description>Measurements in the CLOUD chamber at CERN show that the rapid condensation of ammonia and nitric acid vapours could be important for the formation and survival of new particles in wintertime urban conditions, contributing to urban smog.</description> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Mingyi</dc:creator> 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Stavros</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Amorim, António</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baalbaki, Rima</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baccarini, Andrea</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bell, David M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bertozzi, Barbara</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Bräkling, Steffen</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Brilke, Sophia</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Murillo, Lucía Caudillo</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chiu, Randall</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Chu, Biwu</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">De Menezes, Louis-Philippe</dc:creator> <dc:creator 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xmlns:dc="http://purl.org/dc/elements/1.1/">Wagner, Andrea C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Dongyu S</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wang, Yonghong</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Weber, Stefan K</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Winkler, Paul M</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wlasits, Peter J</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Wu, Yusheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Xiao, Mao</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ye, Qing</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zauner-Wieczorek, Marcel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Zhou, Xueqin</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Volkamer, Rainer</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Riipinen, Ilona</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Dommen, Josef</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Curtius, Joachim</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Baltensperger, Urs</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kulmala, Markku</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Worsnop, Douglas R</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Kirkby, Jasper</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Seinfeld, John H</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">El-Haddad, Imad</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Flagan, Richard C</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Donahue, Neil M</dc:creator> <pubDate>Tue, 04 Aug 2020 04:57:03 GMT</pubDate> 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