<?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>Fri, 28 Feb 2025 01:15:56 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=it&amp;p=M%C3%BCller%2C+Tatjana" /> <opensearch:totalResults>11</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>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>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>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>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 the suppression of new-particle formation by isoprene</title> <link>https://cds.cern.ch/record/2801419</link> <description>Nucleation of atmospheric vapours produces more than half of global cloud condensation nuclei and so has an important influence on climate. Recent studies show that monoterpene (C$_{10}$H$_{16}$) oxidation yields highly oxygenated products that can nucleate with or without sulfuric acid. Monoterpenes are emitted mainly by trees, frequently together with isoprene (C$_5$H$_8$), which has the highest global emission of all organic vapours. Previous studies have shown that isoprene suppresses new-particle formation from monoterpenes, but the cause of this suppression is under debate. Here, in experiments performed under atmospheric conditions in the CERN CLOUD chamber, we show that isoprene reduces the yield of highly oxygenated dimers with 19 or 20 carbon atoms – which drive particle nucleation and early growth – while increasing the production of dimers with 14 or 15 carbon atoms. The dimers (termed C$_{20}$ and C$_{15}$, respectively) are produced by termination reactions between pairs of peroxy radicals (RO$_2$) arising from monoterpenes or isoprene. Compared with pure monoterpene conditions, isoprene reduces nucleation rates at 1.7 nm (depending on the isoprene / monoterpene ratio) and approximately halves particle growth rates between 1.3 and 3.2 nm. However, above 3.2 nm, C$_{15}$ dimers contribute to secondary organic aerosol, and the growth rates are unaffected by isoprene. We further show that increased hydroxyl radical (OH) reduces particle formation in our chemical system rather than enhances it as previously proposed, since it increases isoprene-derived RO$_2$ radicals that reduce C$_{20}$ formation. RO$_2$ termination emerges as the critical step that determines the highly oxygenated organic molecule (HOM) distribution and the corresponding nucleation capability. Species that reduce the C$_{20}$ yield, such as NO, HO$_2$ and as we show isoprene, can thus effectively reduce biogenic nucleation and early growth. Therefore the formation rate of organic aerosol in a particular region of the atmosphere under study will vary according to the precise ambient conditions.</description> <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/">Dada, Lubna</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/">Wagner, Andrea C</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/">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/">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/">Baumgartner, Bernhard</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, 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/">Frege, Carla</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Fuchs, Claudia</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/">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/">El Haddad, Imad</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">He, Xucheng</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Helm, Johanna</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/">Keber, Timo</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/">Lamkaddam, Houssni</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Laurila, Tiia M</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/">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/">Makhmutov, Vladimir</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Manninen, Hanna Elina</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 Lee</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/">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/">Nieminen, Tuomo</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/">Passananti, Monica</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 P</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Rose, Clémence</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/">Scholze, Kay</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/">Vazquez-Pufleau, Miguel</dc:creator> <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Virtanen, Annele</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/">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/">Wang, Mingyi</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/">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/">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/">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/">Kulmala, Markku</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/">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>Sat, 12 Feb 2022 05:25:05 GMT</pubDate> <guid>https://cds.cern.ch/record/2801419</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>Measurement of ammonia, amines and iodine compounds using protonated water cluster chemical ionization mass spectrometry</title> <link>https://cds.cern.ch/record/2725890</link> <description>Here we describe the design and performance of a new water cluster chemical ionization–atmospheric pressure interface time-of-flight mass spectrometer (CI-APi-TOF). The instrument selectively measures trace gases with high proton affinity such as ammonia and dimethylamine, which are important for atmospheric new particle formation and growth. Following the instrument description and characterization, we demonstrate successful measurements at the CERN CLOUD (Cosmics Leaving OUtdoor Droplets) chamber where very low ammonia background levels of ∼4 pptv were achieved (at 278 K and 80 % RH). The limit of detection of the water cluster CI-APi-TOF is estimated to be ∼0.5 pptv for ammonia. Although no direct calibration was performed for dimethylamine (DMA), we estimate its detection limit is at least 3 times lower. Due to the short ion–molecule reaction time and high reagent ion concentrations, ammonia mixing ratios up to at least 10 ppbv can be measured with the instrument without significant reagent ion depletion. Besides the possibility to measure compounds like ammonia and amines (dimethylamine), we demonstrate that the ionization scheme is also suitable for the measurement of trace gases containing iodine. During CLOUD experiments to investigate the formation of new particles from I$_{2}$, many different iodine-containing species were identified with the water cluster CI-APi-TOF. The compounds included iodic acid and neutral molecular clusters containing up to four iodine atoms. However, the molecular structures of the iodine-containing clusters are ambiguous due to the presence of an unknown number of water molecules. The quantification of iodic acid (HIO3) mixing ratios is performed from an intercomparison with a nitrate CI-APi-TOF. Using this method the detection limit for HIO3 can be estimated as 0.007 pptv. In addition to presenting our measurements obtained at the CLOUD chamber, we discuss the applicability of the water cluster Ci-APi-TOF for atmospheric measurements.</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/">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/">Piel, Felix</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/">Wang, Dongyu</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/">Müller, Tatjana</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/">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/">Kürten, Andreas</dc:creator> <pubDate>Tue, 04 Aug 2020 04:57:09 GMT</pubDate> <guid>https://cds.cern.ch/record/2725890</guid> <media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2725890/files/amt-13-2501-2020.gif?subformat=icon"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2725890/files/amt-13-2501-2020.pdf"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2725890/files/amt-13-2501-2020.jpg?subformat=icon-180"/> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2725890/files/amt-13-2501-2020.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>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> <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/">Marten, Ruby</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/">Chen, Dexian</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/">Heitto, Arto</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/">Dada, Lubna</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/">Yli-Juuti, Taina</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/">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/">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 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/">Guida, Roberto</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/">Hofbauer, Victoria</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/">Lehtipalo, Katrianne</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/">Lampimäki, Markus</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/">Makhmutov, Vladimir</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/">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/">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/">Philippov, Maxim</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/">Ranjithkumar, Ananth</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/">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/">Simon, Mario</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/">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/">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> <guid>https://cds.cern.ch/record/2725883</guid> <media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://cds.cern.ch/record/2725883/files/10.1038_s41586-020-2270-4.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> </channel> </rss>