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href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press.html" > News & press<span class="caret"></span> </a> <div class="dropdown-menu level-2 " aria-labelledby="navbarDropdown316"> <div > <div > <div class="col-md-12 col-lg-12 col-sm-12"> <div class="dropdown-item level-3 " style="list-style: none"> <a target="_parent" class="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2019-11-27_thanks-to-cristina-facchini-and-rolf-sander-and-welcome-to-barbara-ervens.html">Many thanks to Cristina Facchini and Rolf Sander and welcome to Barbara Ervens as executive editor of ACP</a> </div> <div class="dropdown-item level-3 " style="list-style: none"> <a target="_parent" class="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2020-08-28_first-acp-letter-published.html">First ACP Letter: The value of remote marine aerosol measurements for constraining radiative forcing uncertainty</a> </div> <div class="dropdown-item 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} #templateSearchResultTerm { font-weight: bold; } #resultsSearchHeader { display: block !important; } #scrolltopmodal { font-size: 3.0em; margin-top: 0 !important; margin-right: 15px; } @-webkit-keyframes animation_dots_breath { 50% { -webkit-transform: scale(1); transform: scale(1); opacity: 1; } 100% { opacity: 0; } } @keyframes animation_dots_breath { 50% { -webkit-transform: scale(1); transform: scale(1); opacity: 1; } 100% { opacity: 0; } } @media (min-width: 768px) and (max-width: 991px) { #templateSearchResultModal .modal-dialog { max-width: 90%; } } </style> <script> if(document.querySelector('meta[name="global_moBaseURL"]').content == "https://meetingorganizer.copernicus.org/") FINDER_URL = document.querySelector('meta[name="global_moBaseURL"]').content.replace('meetingorganizer', 'finder-app')+"search/library.php"; else FINDER_URL = document.querySelector('meta[name="global_moBaseURL"]').content.replace('meetingorganizer', 'finder')+"search/library.php"; SEARCH_INPUT = document.getElementById('search_query_solr'); SEARCH_INPUT_MODAL = document.getElementById('search_query_modal'); searchRunning = false; offset = 20; INITIAL_OFFSET = 20; var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver; const targetNodeSearchModal = document.getElementById("templateSearchResultModal"); const configSearchModal = { attributes: true, childList: true, subtree: true }; // Callback function to execute when mutations are observed const callbackSearchModal = (mutationList, observer) => { for (const mutation of mutationList) { if (mutation.type === "childList") { // console.log("A child node has been added or removed."); picturesGallery(); } else if (mutation.type === "attributes") { // console.log(`The ${mutation.attributeName} attribute was modified.`); } } }; // Create an observer instance linked to the callback function const observer = new MutationObserver(callbackSearchModal); // Start observing the target node for configured mutations observer.observe(targetNodeSearchModal, configSearchModal); function _addEventListener() { document.getElementById('search_query_solr').addEventListener('keypress', (e) => { if (e.key === 'Enter') _runSearch(); }); document.getElementById('start_site_search_solr').addEventListener('click', (e) => { _runSearch(); e.stopPropagation(); e.stopImmediatePropagation(); return false; }); $('#templateSearchResultModal').scroll(function() { if ($(this).scrollTop()) { $('#scrolltopmodal:hidden').stop(true, true).fadeIn().css("display","inline-block"); } else { $('#scrolltopmodal').stop(true, true).fadeOut(); } }); } function scrollModalTop() { $('#templateSearchResultModal').animate({ scrollTop: 0 }, 'slow'); // $('#templateSearchResultModal').scrollTop(0); } function picturesGallery() { $('body').off('click', '.paperlist-avatar img'); $('body').off('click', '#templateSearchResultContainer .paperlist-avatar img'); searchPaperListAvatar = []; searchPaperListAvatarThumb = []; search_pswpElement = document.querySelectorAll('.pswp')[0]; if (typeof search_gallery != "undefined") { search_gallery = null; } $('body').on('click', '#templateSearchResultContainer .paperlist-avatar img', function (e) { if(searchPaperListAvatarThumb.length === 0 && searchPaperListAvatar.length === 0) { $('#templateSearchResultContainer .paperlist-avatar img').each(function () { var webversion = $(this).attr('data-web'); var width = $(this).attr('data-width'); var height = $(this).attr('data-height'); var caption = $(this).attr('data-caption'); var figure = { src: webversion, w: width, h: height, title: caption }; searchPaperListAvatarThumb.push($(this)[0]); searchPaperListAvatar.push(figure); }); } var target = $(this); var index = $('#templateSearchResultContainer .paperlist-avatar img').index(target); var options = { showHideOpacity:false, bgOpacity:0.8, index:index, spacing:0.15, history: false, focus:false, getThumbBoundsFn: function(index) { var thumbnail = searchPaperListAvatarThumb[index]; var pageYScroll = window.pageYOffset || document.documentElement.scrollTop; var rect = thumbnail.getBoundingClientRect(); return {x:rect.left, y:rect.top + pageYScroll, w:rect.width}; } }; search_gallery = new PhotoSwipe( search_pswpElement, PhotoSwipeUI_Default,[searchPaperListAvatar[index]],options); search_gallery.init(); }); } function showError(code, msg) { console.error(code, msg); $("#templateSearchLoadingModal").modal("hide"); switch(code) { case -3: // http request fail case -2: // invalid MO response case 4: // CORS case 1: // project $("#templateSearchErrorModal1").modal({}); break; case -1: // timeout $("#templateSearchErrorModal2").modal({}); break; case 2: // empty term $("#templateSearchErrorModal3").modal({}); break; case 3: // DOS $("#templateSearchErrorModal4").modal({}); break; default: $("#templateSearchErrorModal1").modal({}); break; } } function clearForm() { var myFormElement = document.getElementById("library-filters") var elements = myFormElement.elements; $(".form-check-input").prop('checked', false).change().parent().removeClass('active'); for(i=0; i<elements.length; i++) { field_type = elements[i].type.toLowerCase(); switch(field_type) { case "text": case "password": case "textarea": case "hidden": elements[i].value = ""; break; case "radio": case "checkbox": if (elements[i].checked) { elements[i].checked = false; } break; case "select-one": case "select-multi": elements[i].selectedIndex = -1; break; default: break; } } } function generateShowMoreButton(offset, term) { var code = '<button aria-label="ShowMore" id="showMore" class="btn btn-success float-right mr-2" data-offset="' + offset + '">Show more</button>'; return code; } function hideModal(id) { $("#"+id).modal('hide'); } function showModal(id) { $("#"+id).modal({}); } function prepareForPhotoSwipe() { searchPaperListAvatar = []; searchPaperListAvatarThumb = []; search_pswpElement = document.querySelectorAll('.pswp')[0]; } function _sendAjax(projectID, term) { let httpRequest = new XMLHttpRequest(); if(searchRunning) { console.log("Search running"); return; } if (!httpRequest) { console.error("Giving up :( Cannot create an XMLHTTP instance"); showError(-1); return false; } // httpRequest.timeout = 20000; // time in milliseconds httpRequest.withCredentials = false; httpRequest.ontimeout = (e) => { showError(-1, "result timeout"); searchRunning = false; }; httpRequest.onreadystatechange = function() { if (httpRequest.readyState === XMLHttpRequest.DONE) { searchRunning = false; if (httpRequest.status === 200) { let rs = JSON.parse(httpRequest.responseText); if(rs) { if(rs.isError) { showError(rs.errorCode, rs.errorMessage); } else { let html = rs.resultHTMLs; $("#modal_search_query").val(rs.term); $("#templateSearchResultTerm").html(rs.term); $("#templateSearchResultNr").html(rs.resultsNr); $("#templateRefineSearch").html(rs.filter); if(rs.filter == false) { console.log('filter empty'); $("#refineSearchModal").removeClass('d-block').addClass('d-none'); } if(rs.resultsNr==1) $("#templateSearchResultNrPlural").hide(); else $("#templateSearchResultNrPlural").show(); if(rs.resultsNr==0) { hideModal('templateSearchLoadingModal'); $("#templateSearchResultContainer").html(""); $("#templateSearchResultContainerEmpty").removeClass("d-none"); showModal('templateSearchResultModal'); } else { if((rs.resultsNr - offset)>0) { html = html + generateShowMoreButton(offset, term); } $("#templateSearchResultContainerEmpty").addClass("d-none"); if( offset == INITIAL_OFFSET) { hideModal('templateSearchLoadingModal'); $("#templateSearchResultContainer").html(html); showModal('templateSearchResultModal'); } else { $('#showMore').remove(); startHtml = $("#templateSearchResultContainer").html(); $("#templateSearchResultContainer").html(startHtml + html); } // prepareForPhotoSwipe(); } } } else { showError(-2, "invalid result"); } } else { showError(-3, "There was a problem with the request."); } } }; if(offset == INITIAL_OFFSET) { hideModal('templateSearchResultModal'); showModal('templateSearchLoadingModal'); } httpRequest.open("GET", FINDER_URL+"?project="+projectID+"&term="+encodeURI(term)+((offset>INITIAL_OFFSET)?("&offset="+(offset-INITIAL_OFFSET)) : "")); httpRequest.send(); searchRunning = true; } function _runSearch() { var projectID = document.querySelector('meta[name="global_projectID"]').content; var term = _searchTrimInput(SEARCH_INPUT.value); if(term.length > 0) { _sendAjax(projectID, term); } else { showError(2, 'Empty search term') } } function _searchTrimInput(str) { return str.replace(/^\s+|\s+$/gm, ''); } function run() { _addEventListener(); $('#templateSearchInfoBtn, #modalSearchInfoBtn').popover({ sanitize: false, html: true, content: $("#templateSearchInfo").html(), placement: "bottom", template: '<div class="popover" role="tooltip"><div class="arrow"></div><button class="m-1 float-right btn btn-sm btn-danger" id="templateSearchInfoClose"><i class="fas fa-times-circle"></i></button><h3 class="popover-header"></h3><div class="popover-body"></div></div>', title: "Search tips", }); $(document).click(function (e) { let t = $(e.target); let a = t && t.attr("data-toggle")!=="popover" && t.parent().attr("data-toggle")!=="popover"; let b = t && $(".popover").has(t).length===0; if(a && b) { $('#templateSearchInfoBtn').popover('hide'); $('#modalSearchInfoBtn').popover('hide'); } }); $('#templateSearchInfoBtn').on('shown.bs.popover', function () { $("#templateSearchInfoClose").click(function(e){ $('#templateSearchInfoBtn').popover('hide'); e.stopPropagation(); e.stopImmediatePropagation(); return false; }); }) $('#templateSearchResultModal').on('hidden.bs.modal', function(e) { $('body').off('click', '#templateSearchResultContainer .paperlist-avatar img'); var pswpElement = document.querySelectorAll('.pswp')[0]; var gallery = null; var paperListAvatar = []; var paperListAvatarThumb = []; $('.paperlist-avatar img').each(function(){ var webversion = $(this).attr('data-web'); var width = $(this).attr('data-width'); var height = $(this).attr('data-height'); var caption =$(this).attr('data-caption'); var figure = { src:webversion, w:width, h:height, title:caption }; paperListAvatarThumb.push($(this)[0]); paperListAvatar.push(figure); }); $('body').on('click', '.paperlist-avatar img', function (e) { if(paperListAvatarThumb.length === 0 && paperListAvatar.length === 0){ $('.paperlist-avatar img').each(function(){ var webversion = $(this).attr('data-web'); 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Please read more. <a target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-30_extreme-saharan-dust-events-expand-northward-over-the-atlantic-and-europe-prompting-record-breaking-pm10-and-pm25-episodes.html"><img cofileid="17978" alt="" src="https://www.atmospheric-chemistry-and-physics.net/graphic_grey_right_symbol.png"></a></p> </div> <div class="grid-85 tablet-grid-85 hide-on-mobile"> <span class="published-date">30 Oct 2024</span> <a target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-30_extreme-saharan-dust-events-expand-northward-over-the-atlantic-and-europe-prompting-record-breaking-pm10-and-pm25-episodes.html" class="article-title">Extreme Saharan dust events expand northward over the Atlantic and Europe, prompting record-breaking PM<sub>10</sub> and PM<sub>2.5</sub> episodes</a> <p class="citation">Extreme Saharan dust events expanded northward to the Atlantic and Europe, prompting record-breaking PM<sub>10</sub> and PM<sub>2.5</sub> events. Please read more. <a target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-30_extreme-saharan-dust-events-expand-northward-over-the-atlantic-and-europe-prompting-record-breaking-pm10-and-pm25-episodes.html"><img cofileid="17978" alt="" src="https://www.atmospheric-chemistry-and-physics.net/graphic_grey_right_symbol.png"></a></p> </div> <div class="grid-15 tablet-grid-15 hide-on-mobile text-right"> <a class=" paperlist-avatar-unclickable" target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-30_extreme-saharan-dust-events-expand-northward-over-the-atlantic-and-europe-prompting-record-breaking-pm10-and-pm25-episodes.html"><img alt="" cofileid="2555903" src="https://www.atmospheric-chemistry-and-physics.net/acp-24-12031-2024-key-figure-80x80-PR.png" width="80px"/></a> </div> <div class="hide-on-desktop hide-on-tablet mobile-grid-100"> <a class="paperlist-avatar-unclickable" target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-14_stable-and-unstable-fall-motions-of-plate-like-ice-crystal-analogues.html"><img alt="" cofileid="2551795" src="https://www.atmospheric-chemistry-and-physics.net/ACP+Graphic+acp-24-11133-2024-key-figure+80x80px+PR" width="80px"/></a> </div> <div class="hide-on-desktop hide-on-tablet mobile-grid-100"> <span class="published-date">14 Oct 2024</span> <a target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-14_stable-and-unstable-fall-motions-of-plate-like-ice-crystal-analogues.html" class="article-title">Stable and unstable fall motions of plate-like ice crystal analogues</a> <p class="citation">This study uses 3D-printed ice crystal analogues falling in a water–glycerine mix and observed with multi-view cameras, simulating atmospheric conditions. Four types of motion are observed: stable, zigzag, transitional, and spiralling. Particle shape strongly influences motion; complex shapes have a wider range of conditions where they fall steadily compared to simple plates. Read more. <a target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-14_stable-and-unstable-fall-motions-of-plate-like-ice-crystal-analogues.html"><img cofileid="17978" alt="" src="https://www.atmospheric-chemistry-and-physics.net/graphic_grey_right_symbol.png"></a></p> </div> <div class="grid-85 tablet-grid-85 hide-on-mobile"> <span class="published-date">14 Oct 2024</span> <a target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-14_stable-and-unstable-fall-motions-of-plate-like-ice-crystal-analogues.html" class="article-title">Stable and unstable fall motions of plate-like ice crystal analogues</a> <p class="citation">This study uses 3D-printed ice crystal analogues falling in a water–glycerine mix and observed with multi-view cameras, simulating atmospheric conditions. Four types of motion are observed: stable, zigzag, transitional, and spiralling. Particle shape strongly influences motion; complex shapes have a wider range of conditions where they fall steadily compared to simple plates. Read more. <a target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-14_stable-and-unstable-fall-motions-of-plate-like-ice-crystal-analogues.html"><img cofileid="17978" alt="" src="https://www.atmospheric-chemistry-and-physics.net/graphic_grey_right_symbol.png"></a></p> </div> <div class="grid-15 tablet-grid-15 hide-on-mobile text-right"> <a class=" paperlist-avatar-unclickable" target="" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press/2024-10-14_stable-and-unstable-fall-motions-of-plate-like-ice-crystal-analogues.html"><img alt="" cofileid="2551795" src="https://www.atmospheric-chemistry-and-physics.net/ACP+Graphic+acp-24-11133-2024-key-figure+80x80px+PR" width="80px"/></a> </div> <div class="j-news-archive-link grid-100 tablet-grid-100 mobile-grid-100"> <a class="btn btn-primary" href="https://www.atmospheric-chemistry-and-physics.net/about/news_and_press.html">News archive</a> </div> </div> </div><div id="highlight-articles" class="cmsbox landing-page"><div id="highlight-paper-content"> <div id="highlight-articles-header"> <h2>Highlight articles</h2> </div> <div class="grid-container paperlist-object in-range paperList-final" data-diff="0"> <div class="grid-100 hide-on-desktop hide-on-tablet"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/12259/2024/acp-24-12259-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/12259/2024/acp-24-12259-2024-avatar-thumb80.png" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-web="https://acp.copernicus.org/articles/24/12259/2024/acp-24-12259-2024-avatar-web.png" data-width="531" data-height="600" width="80" height="80"> </a> </div> <div class="grid-85 tablet-grid-85"> <div class="published-date"> 06 Nov 2024</div> <a class="article-title" target="_parent" href="https://acp.copernicus.org/articles/24/12259/2024/">Tropospheric links to uncertainty in stratospheric subseasonal predictions</a> <div class="authors">Rachel W.-Y. Wu, Gabriel Chiodo, Inna Polichtchouk, and Daniela I. V. Domeisen</div> <div class="citation">Atmos. Chem. Phys., 24, 12259–12275, <nobr class="hide-on-mobile hide-on-tablet">https://doi.org/10.5194/acp-24-12259-2024,</nobr><span class="hide-on-desktop">https://doi.org/10.5194/acp-24-12259-2024,</span> 2024</div> <span class="show-hide journal-contentLinkColor triangle short_summary_button_120744" data-show=".short_summary_120744" data-hide=".short_summary_button_120744" >Short summary</span> <span class="show-hide journal-contentLinkColor triangle ce_comment_button_120744 ml-2" data-show=".ce_comment_120744" data-hide=".ce_comment_button_120744">Executive editor</span> <div class="j-widget__max short_summary short_summary_120744" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Short summary</div> <div class="content"> Strong variations in the strength of the stratospheric polar vortex can profoundly affect surface weather extremes; therefore, accurately predicting the stratosphere can improve surface weather forecasts. The research reveals how uncertainty in the stratosphere is linked to the troposphere. The findings suggest that refining models to better represent the identified sources and impact regions in the troposphere is likely to improve the prediction of the stratosphere and its surface impacts. </div> <div><a href="#" class="show-hide triangle" data-hide=".short_summary_120744" data-show=".short_summary_button_120744">Hide</a></div> </div> </div> <div class="j-widget__max ce_comment ce_comment_120744 mt-3" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Executive editor</div> <div class="content"> There has been much emphasis on the increased predictability of the extratropical tropospheric circulation after stratospheric sudden warmings and the potential value of this to weather forecasting. But it remains the case that the sudden warmings themselves, which are significantly (but not exclusively) driven by variabiliity in the troposphere, have limited predictability. This paper uses ensemble forecasts to identify tropospheric circulation features that, if poorly predicted in the period prior to a sudden warming, lead to a poor prediction of the warming itself and hence provides a potentially useful focus for future improvements to forecast models. </div> <div><a href="#" class="show-hide triangle" data-hide=".ce_comment_120744" data-show=".ce_comment_button_120744">Hide</a></div> </div> </div> </div> <div class="grid-15 tablet-grid-15 text-right hide-on-mobile"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/12259/2024/acp-24-12259-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/12259/2024/acp-24-12259-2024-avatar-thumb80.png" data-web="https://acp.copernicus.org/articles/24/12259/2024/acp-24-12259-2024-avatar-web.png" data-width="531" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-height="600" width="80" height="80"> </a> </div> </div> <div class="grid-container paperlist-object in-range paperList-final" data-diff="0"> <div class="grid-100 hide-on-desktop hide-on-tablet"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/11133/2024/acp-24-11133-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/11133/2024/acp-24-11133-2024-avatar-thumb80.png" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-web="https://acp.copernicus.org/articles/24/11133/2024/acp-24-11133-2024-avatar-web.png" data-width="600" data-height="457" width="80" height="80"> </a> </div> <div class="grid-85 tablet-grid-85"> <div class="published-date"> 10 Oct 2024</div> <a class="article-title" target="_parent" href="https://acp.copernicus.org/articles/24/11133/2024/">Stable and unstable fall motions of plate-like ice crystal analogues</a> <div class="authors">Jennifer R. Stout, Christopher D. Westbrook, Thorwald H. M. Stein, and Mark W. McCorquodale</div> <div class="citation">Atmos. Chem. Phys., 24, 11133–11155, <nobr class="hide-on-mobile hide-on-tablet">https://doi.org/10.5194/acp-24-11133-2024,</nobr><span class="hide-on-desktop">https://doi.org/10.5194/acp-24-11133-2024,</span> 2024</div> <span class="show-hide journal-contentLinkColor triangle short_summary_button_117914" data-show=".short_summary_117914" data-hide=".short_summary_button_117914" >Short summary</span> <span class="show-hide journal-contentLinkColor triangle ce_comment_button_117914 ml-2" data-show=".ce_comment_117914" data-hide=".ce_comment_button_117914">Executive editor</span> <div class="j-widget__max short_summary short_summary_117914" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Short summary</div> <div class="content"> This study uses 3D-printed ice crystal analogues falling in a water–glycerine mix and observed with multi-view cameras, simulating atmospheric conditions. Four types of motion are observed: stable, zigzag, transitional, and spiralling. Particle shape strongly influences motion; complex shapes have a wider range of conditions where they fall steadily compared to simple plates. The most common orientation of unstable particles is non-horizontal, contrary to prior assumptions of always horizontal. </div> <div><a href="#" class="show-hide triangle" data-hide=".short_summary_117914" data-show=".short_summary_button_117914">Hide</a></div> </div> </div> <div class="j-widget__max ce_comment ce_comment_117914 mt-3" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Executive editor</div> <div class="content"> Among the most important atmospheric processes to humans is precipitation, which may take the liquid phase (rainfall) or ice phase (snowfall) at the Earth's surface. However, the great majority of precipitation reaching the Earth's surface passes through an ice phase before melting, and thus descends some distance through the atmosphere at a rate that is commonly understood to depend on ice particle shape. While it is colloquially said that no two snowflakes are exactly alike, their shapes do fall into a range of categories. In this work, a common diversity of ice crystal shapes are reproduced via 3D printing and their shapes are found to lead to a range of stable and unstable patterns of motion, such as zigzagging or spiraling. These motions are systematically investigated and characterized. Such advances in understanding the variability of ice fall speeds bear on a wide range of disciplines including climate forecasting and a variety of approaches to remote sensing of atmospheric conditions. [Videos are recommended accompaniment.] </div> <div><a href="#" class="show-hide triangle" data-hide=".ce_comment_117914" data-show=".ce_comment_button_117914">Hide</a></div> </div> </div> </div> <div class="grid-15 tablet-grid-15 text-right hide-on-mobile"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/11133/2024/acp-24-11133-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/11133/2024/acp-24-11133-2024-avatar-thumb80.png" data-web="https://acp.copernicus.org/articles/24/11133/2024/acp-24-11133-2024-avatar-web.png" data-width="600" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-height="457" width="80" height="80"> </a> </div> </div> <p class="j-news-archive-link grid-container grid-parent"> <strong> <a class="grid-30 tablet-grid-30 mobile-grid-100" href="https://acp.copernicus.org/editors_choice.html">More highlight articles <img cofileid="17978" alt="" src="https://www.atmospheric-chemistry-and-physics.net/graphic_grey_right_symbol.png"></a> <a class="grid-30 tablet-grid-30 mobile-grid-100 a-margin__left-2" target="_blank" href="https://www.egu.eu/news/highlight-articles/">All EGU highlight articles <img cofileid="17978" alt="" src="https://www.atmospheric-chemistry-and-physics.net/graphic_grey_right_symbol.png"></a> </strong> </p> </div>    </div><div id="recent_paper" class="cmsbox j-article j-article-section"><div id="recent-paper-content"> <div id="recent_paper_header"> <h2>Recent papers</h2> </div> <div class="grid-container paperlist-object type-0 in-range paperList-discussion" data-diff="0"> <div class="grid-100 hide-on-desktop hide-on-tablet"> </div> <div class="grid-85 tablet-grid-85"> <div class="published-date"> 22 Nov 2024</div> <a class="article-title" target="_parent" href="https://egusphere.copernicus.org/preprints/2024/egusphere-2024-3550/">Kinetics of the reactions of OH with CO, NO, NO<sub>2</sub> and of HO<sub>2</sub> with NO<sub>2</sub> in air at 1 atm pressure, room temperature and tropospheric water vapour concentrations</a> <div class="authors">Michael Rolletter, Andreas Hofzumahaus, Anna Novelli, Andreas Wahner, and Hendrik Fuchs</div> <div class="citation">EGUsphere, <nobr class="hide-on-mobile hide-on-tablet">https://doi.org/10.5194/egusphere-2024-3550,</nobr><span class="hide-on-desktop">https://doi.org/10.5194/egusphere-2024-3550,</span> 2024</div> <div class="statusMessage"><span>Preprint under review for ACP</span> <nobr>(discussion: open, 0 comments)</nobr></div> <span class="show-hide journal-contentLinkColor triangle short_summary_button_125062" data-show=".short_summary_125062" data-hide=".short_summary_button_125062" >Short summary</span> <div class="j-widget__max short_summary short_summary_125062" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Short summary</div> <div class="content"> Highly accurate rate coefficients of termolecular reactions between OH and HO<sub>2</sub> radicals and reactive nitrogen oxides were measured for conditions in the lower troposphere, providing improved constraints on recommended values. No dependence on water vapour was found except for the HO<sub>2</sub>+NO<sub>2</sub> reaction, which can be explained by an enhanced rate coefficient of the NO<sub>2</sub> reaction with the water complex of the HO<sub>2</sub> radical. </div> <div><a href="#" class="show-hide triangle" data-hide=".short_summary_125062" data-show=".short_summary_button_125062">Hide</a></div> </div> </div> </div> <div class="grid-15 tablet-grid-15 text-right hide-on-mobile"> </div> </div> <div class="grid-container paperlist-object type-0 in-range paperList-discussion" data-diff="0"> <div class="grid-100 hide-on-desktop hide-on-tablet"> </div> <div class="grid-85 tablet-grid-85"> <div class="published-date"> 22 Nov 2024</div> <a class="article-title" target="_parent" href="https://egusphere.copernicus.org/preprints/2024/egusphere-2024-2827/">The role of surface-active macromolecules in the ice nucleating ability of lignin, Snomax, and agricultural soil extracts</a> <div class="authors">Kathleen A. Thompson, Paul Bieber, Anna J. Miller, Nicole Link, Benjamin J. Murray, and Nadine Borduas-Dedekind</div> <div class="citation">EGUsphere, <nobr class="hide-on-mobile hide-on-tablet">https://doi.org/10.5194/egusphere-2024-2827,</nobr><span class="hide-on-desktop">https://doi.org/10.5194/egusphere-2024-2827,</span> 2024</div> <div class="statusMessage"><span>Preprint under review for ACP</span> <nobr>(discussion: open, 0 comments)</nobr></div> <span class="show-hide journal-contentLinkColor triangle short_summary_button_123279" data-show=".short_summary_123279" data-hide=".short_summary_button_123279" >Short summary</span> <div class="j-widget__max short_summary short_summary_123279" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Short summary</div> <div class="content"> Lignin and Snomax are surface-active macromolecules that show a relationship between increasing concentrations, decreasing surface tension, and increasing ice-nucleating ability. However, this relationship did not hold for agricultural soil extracts collected in the UK and Canada. Hydrophobic interfaces play an important role in the ice-nucleating activity of organic matter; as the complexity of the sample increases, the hydrophobic interfaces in the bulk compete with the air-water interface. </div> <div><a href="#" class="show-hide triangle" data-hide=".short_summary_123279" data-show=".short_summary_button_123279">Hide</a></div> </div> </div> </div> <div class="grid-15 tablet-grid-15 text-right hide-on-mobile"> </div> </div> <div class="grid-container paperlist-object in-range paperList-final" data-diff="0"> <div class="grid-100 hide-on-desktop hide-on-tablet"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/12881/2024/acp-24-12881-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/12881/2024/acp-24-12881-2024-avatar-thumb80.png" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-web="https://acp.copernicus.org/articles/24/12881/2024/acp-24-12881-2024-avatar-web.png" data-width="578" data-height="600" width="80" height="80"> </a> </div> <div class="grid-85 tablet-grid-85"> <div class="published-date"> 21 Nov 2024</div> <a class="article-title" target="_parent" href="https://acp.copernicus.org/articles/24/12881/2024/">Understanding the mechanism and importance of brown carbon bleaching across the visible spectrum in biomass burning plumes from the WE-CAN campaign</a> <div class="authors">Yingjie Shen, Rudra P. Pokhrel, Amy P. Sullivan, Ezra J. T. Levin, Lauren A. Garofalo, Delphine K. Farmer, Wade Permar, Lu Hu, Darin W. Toohey, Teresa Campos, Emily V. Fischer, and Shane M. Murphy</div> <div class="citation">Atmos. Chem. Phys., 24, 12881–12901, <nobr class="hide-on-mobile hide-on-tablet">https://doi.org/10.5194/acp-24-12881-2024,</nobr><span class="hide-on-desktop">https://doi.org/10.5194/acp-24-12881-2024,</span> 2024</div> <span class="show-hide journal-contentLinkColor triangle short_summary_button_117223" data-show=".short_summary_117223" data-hide=".short_summary_button_117223" >Short summary</span> <div class="j-widget__max short_summary short_summary_117223" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Short summary</div> <div class="content"> The magnitude and evolution of brown carbon (BrC) absorption remain unclear, with uncertainty in climate models. Data from the WE-CAN airborne experiment show that model parameterizations overestimate the mass absorption cross section (MAC) of BrC. Observed decreases in BrC absorption with chemical markers are due to decreasing organic aerosol (OA) mass rather than a decreasing BrC MAC, which is currently implemented in models. Water-soluble BrC contributes 23 % of total absorption at 660 nm. </div> <div><a href="#" class="show-hide triangle" data-hide=".short_summary_117223" data-show=".short_summary_button_117223">Hide</a></div> </div> </div> </div> <div class="grid-15 tablet-grid-15 text-right hide-on-mobile"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/12881/2024/acp-24-12881-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/12881/2024/acp-24-12881-2024-avatar-thumb80.png" data-web="https://acp.copernicus.org/articles/24/12881/2024/acp-24-12881-2024-avatar-web.png" data-width="578" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-height="600" width="80" height="80"> </a> </div> </div> <div class="grid-container paperlist-object in-range paperList-final" data-diff="0"> <div class="grid-100 hide-on-desktop hide-on-tablet"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/12943/2024/acp-24-12943-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/12943/2024/acp-24-12943-2024-avatar-thumb80.png" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-web="https://acp.copernicus.org/articles/24/12943/2024/acp-24-12943-2024-avatar-web.png" data-width="600" data-height="455" width="80" height="80"> </a> </div> <div class="grid-85 tablet-grid-85"> <div class="published-date"> 21 Nov 2024</div> <a class="article-title" target="_parent" href="https://acp.copernicus.org/articles/24/12943/2024/">The atmospheric oxidizing capacity in China – Part 2: Sensitivity to emissions of primary pollutants</a> <div class="authors">Jianing Dai, Guy P. Brasseur, Mihalis Vrekoussis, Maria Kanakidou, Kun Qu, Yijuan Zhang, Hongliang Zhang, and Tao Wang</div> <div class="citation">Atmos. Chem. Phys., 24, 12943–12962, <nobr class="hide-on-mobile hide-on-tablet">https://doi.org/10.5194/acp-24-12943-2024,</nobr><span class="hide-on-desktop">https://doi.org/10.5194/acp-24-12943-2024,</span> 2024</div> <span class="show-hide journal-contentLinkColor triangle short_summary_button_118617" data-show=".short_summary_118617" data-hide=".short_summary_button_118617" >Short summary</span> <div class="j-widget__max short_summary short_summary_118617" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Short summary</div> <div class="content"> This paper employs a regional chemical transport model to quantify the sensitivity of air pollutants and photochemical parameters to specified emission reductions in China for representative winter and summer conditions. The study provides insights into further air quality control in China with reduced primary emissions. </div> <div><a href="#" class="show-hide triangle" data-hide=".short_summary_118617" data-show=".short_summary_button_118617">Hide</a></div> </div> </div> </div> <div class="grid-15 tablet-grid-15 text-right hide-on-mobile"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/12943/2024/acp-24-12943-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/12943/2024/acp-24-12943-2024-avatar-thumb80.png" data-web="https://acp.copernicus.org/articles/24/12943/2024/acp-24-12943-2024-avatar-web.png" data-width="600" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-height="455" width="80" height="80"> </a> </div> </div> <div class="grid-container paperlist-object in-range paperList-final" data-diff="0"> <div class="grid-100 hide-on-desktop hide-on-tablet"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/12925/2024/acp-24-12925-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/12925/2024/acp-24-12925-2024-avatar-thumb80.png" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-web="https://acp.copernicus.org/articles/24/12925/2024/acp-24-12925-2024-avatar-web.png" data-width="600" data-height="436" width="80" height="80"> </a> </div> <div class="grid-85 tablet-grid-85"> <div class="published-date"> 21 Nov 2024</div> <a class="article-title" target="_parent" href="https://acp.copernicus.org/articles/24/12925/2024/">Upper-stratospheric temperature trends: new results from the Optical Spectrograph and InfraRed Imager System (OSIRIS)</a> <div class="authors">Kimberlee Dubé, Susann Tegtmeier, Adam Bourassa, Daniel Zawada, Douglas Degenstein, William Randel, Sean Davis, Michael Schwartz, Nathaniel Livesey, and Anne Smith</div> <div class="citation">Atmos. Chem. Phys., 24, 12925–12941, <nobr class="hide-on-mobile hide-on-tablet">https://doi.org/10.5194/acp-24-12925-2024,</nobr><span class="hide-on-desktop">https://doi.org/10.5194/acp-24-12925-2024,</span> 2024</div> <span class="show-hide journal-contentLinkColor triangle short_summary_button_119738" data-show=".short_summary_119738" data-hide=".short_summary_button_119738" >Short summary</span> <div class="j-widget__max short_summary short_summary_119738" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Short summary</div> <div class="content"> Greenhouse gas emissions that warm the troposphere also result in stratospheric cooling. The cooling rate is difficult to quantify above 35 km due to a deficit of long-term observational data with high vertical resolution in this region. We use satellite observations from several instruments, including a new temperature product from OSIRIS, to show that the upper stratosphere, from 35–60 km, cooled by 0.5 to 1 K per decade over 2005–2021 and by 0.6 K per decade over 1979–2021. </div> <div><a href="#" class="show-hide triangle" data-hide=".short_summary_119738" data-show=".short_summary_button_119738">Hide</a></div> </div> </div> </div> <div class="grid-15 tablet-grid-15 text-right hide-on-mobile"> <a class="paperlist-avatar" target="_blank" href="https://acp.copernicus.org/articles/24/12925/2024/acp-24-12925-2024-avatar-web.png"> <img class="img-responsive" src="https://acp.copernicus.org/articles/24/12925/2024/acp-24-12925-2024-avatar-thumb80.png" data-web="https://acp.copernicus.org/articles/24/12925/2024/acp-24-12925-2024-avatar-web.png" data-width="600" data-caption="© Author(s). Distributed under the Creative Commons Attribution 4.0 License." data-height="436" width="80" height="80"> </a> </div> </div> </div>    </div><div id="special-issues-scheduled-content" class="cmsbox "> <div id="special-issues-header"><h2>Scheduled special issues</h2></div> <div class="grid-container grid-parent"> <div class="grid-100 tablet-grid-100 mobile-grid-100 grid-parent" id="chronologically"> <div class="grid-container grid-parent special-issue triangle_special_issues"> <div class="grid-100 tablet-grid-100 mobile-grid-100 title triangle-content"> <a href="javascript:void(0);" class="show-hide" data-toggle="#info-chronologically-content-1347,#info-chronologically-link-1347" data-duration="300"> CoMet 2.0 Arctic: a mission to improve our understanding of carbon dioxide and methane cycles at high northern latitudes </a> (AMT/ACP/GMD inter-journal SI) </div> <div class="grid-100 tablet-grid-100 mobile-grid-100 date"> 01 Oct 2024–30 Sep 2026 | ACP editors | Coordinators: Tanja Schuck (Goethe University Frankfurt, Germany) and Christoph Gerbig (Max Planck Institute for Biogeochemistry, Germany) | <a href="javascript:void(0);" class="info-link show-hide" id="info-chronologically-link-1347" data-show="#info-chronologically-content-1347" data-hide="#info-chronologically-link-1347">Information</a> </div> <div class="j-widget__max short_summary" id="info-chronologically-content-1347" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Information</div> <div class="content" id="1347"> <p>The climate crisis is one of the grand challenges of the 21st century. The increase in Earth's surface temperature, commonly known as global warming or anthropogenically induced climate change, is primarily driven by the rise in greenhouse gases (GHGs) in the atmosphere. The two most significant greenhouse gases affected by human activity are carbon dioxide (CO<sub>2</sub>) and methane (CH<sub>4</sub>).</p><p>While human activities such as fossil fuel combustion, oil and gas exploration, waste management, and agriculture are major sources of GHGs, natural sources also play a significant role. Extensive wetlands, for example, are the largest natural source of CH<sub>4</sub> globally. In wetlands, methane is produced by soil microbes and plants that metabolize under anaerobic conditions and is then released into the atmosphere through diffusion, transport via plant tissues, and gas bubble emissions. These processes make global wetlands among the most important yet least understood sources and sinks in the global methane and CO<sub>2</sub> budget.</p><p>A major scientific challenge in this context is distinguishing between methane emissions from natural sources and those resulting from human activities. Our understanding of these processes, their relative magnitudes, and the associated feedback mechanisms – such as increased wildfire activity, permafrost thaw, or changes in inundation patterns – is still insufficient to fully meet the needs of scientists and policymakers in predicting and mitigating climate warming.</p><p>To enhance our understanding of greenhouse gas budgets, a series of airborne measurement campaigns, known as CoMet (Carbon Dioxide and Methane Mission), have been conducted using the unique capabilities of the German research aircraft <i>HALO</i>. The CoMet campaigns integrate active airborne remote sensing measurements with lasers, passive remote sensing with spectrometers and solar radiation, and advanced in situ greenhouse gas concentration measurements, alongside an extensive suite of meteorological parameters. These observations are further supported by extensive modelling activities that also contribute to validating existing GHG satellite data and preparing for the next generation of such missions.</p> <p>The first CoMet campaign took place in 2018, and its findings were published in a special inter-journal issue of AMT/ACP/GMD. The follow-up campaign, CoMet 2.0 Arctic (<a href="https://comet2arctic.de"target="_blank">https://comet2arctic.de</a>), was successfully conducted during a 6-week intensive operation period in August and September 2022 in Canada. The research flights focused on greenhouse gas emissions from boreal wetlands, permafrost areas in the Canadian Arctic, and wildfires, as well as anthropogenic sources like oil, gas, and coal extraction sites and landfills (in Canada and, during a test flight, in Spain). This campaign provided a valuable dataset for understanding methane and carbon dioxide cycles, particularly at high northern latitudes.</p><p>CoMet 2.0 Arctic is also part of the transatlantic AMPAC (Arctic Methane and Permafrost Challenge) initiative, a collaborative effort between NASA and ESA that fosters cooperation among US, Canadian, and European research institutes in this crucial area of research.</p><p>The special issue is open to all contributions that fit the topic from participants of the CoMet 2.0 Arctic field mission, the AMPAC community, and associated research partners.</p> </div> <div class="row"> <div class="col-auto"> <a href="#" class="show-hide triangle" data-hide="#info-chronologically-content-1347" data-show="#info-chronologically-link-1347">Hide</a> </div> <div class="col text-right"> <a class="si-mobile-native-share" href="#" data-title="CoMet 2.0 Arctic: a mission to improve our understanding of carbon dioxide and methane cycles at high northern latitudes" data-url="" data-id="1347" style="display: none;"> <i class="fas fa-lg fa-share-alt"></i> </a> <a class="desktop-share" href="#" data-title="CoMet 2.0 Arctic: a mission to improve our understanding of carbon dioxide and methane cycles at high northern latitudes" data-url="" data-id="1347" title="Copy to clipboard"> <i class="fas fa-lg fa-share-alt"></i> </a> </div> </div> </div> </div> </div> <div class="grid-container grid-parent special-issue triangle_special_issues"> <div class="grid-100 tablet-grid-100 mobile-grid-100 title triangle-content"> <a href="https://acp.copernicus.org/articles/special_issue1332.html">Exploring impacts of troposphere–stratosphere coupling processes and challenges of forecasting extreme events in the Asian summer monsoon in a changing climate</a> (ACP/WCD inter-journal SI) </div> <div class="grid-100 tablet-grid-100 mobile-grid-100 date"> 01 Aug 2024–31 Jan 2026 | ACP co-editors | Coordinators: Peter Haynes (University of Cambridge, United Kingdom) and Rolf Müller (Forschungszentrum Jülich, Germany) | Co-organizers: Suvarna Fadnavis (Indian Institute of Tropical Meteorology, India), Marc von Hobe (Forschungszentrum Jülich, Germany), E.N. Rajagopal (Indian Institute of Tropical Meteorology, India), and Parthasarathi Mukhopadhyay (Indian Institute of Tropical Meteorology, India) | <a href="javascript:void(0);" class="info-link show-hide" id="info-chronologically-link-1332" data-show="#info-chronologically-content-1332" data-hide="#info-chronologically-link-1332">Information</a> </div> <div class="j-widget__max short_summary" id="info-chronologically-content-1332" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Information</div> <div class="content" id="1332"> <p>The Asian summer monsoon (ASM) plays a key role in the vertical transport of material (including anthropogenic pollutants, aerosols, aerosol precursors, and other important trace gases) across the tropopause, with significant impacts on stratospheric chemistry and dynamics regionally and globally. Additionally, the Asian region is experiencing increasingly frequent and severe weather extremes connected to the ASM that are causing unprecedented damage to public property and loss of life. Predicting localized extreme events with sufficient lead times using numerical weather prediction (NWP) models remains challenging, and recent research suggests that better representation of stratospheric processes in NWP models can help to improve the prediction of monsoon extremes. On the other hand, it is well recognized that the complexities of the underlying mechanisms of stratosphere–troposphere coupling processes are difficult to incorporate in NWP models.</p> <p>Observational and modelling aspects of the stratosphere–troposphere coupling processes and extreme weather events associated with the Asian summer monsoon were addressed at an international workshop, Stratosphere-Troposphere Interactions and Prediction of Monsoon weather EXtremes (STIPMEX), in Pune, India, from 2 to 7 June 2024. The STIPMEX workshop provided a platform for discussions on dynamical, chemical, radiative, and convective processes of the atmosphere during the ASM and fostered knowledge exchange and collaboration between experts on stratosphere–troposphere interactions and extreme weather prediction. The workshop aimed to promote and improve the inclusion of stratospheric and tropospheric processes in NWP models for better predictability of monsoon extremes. Full information on the STIPMEX workshop including a detailed list of themes and topics as well as an overview of the delivered presentations can be found at <a href="https://sparc-extreme.tropmet.res.in/"target="_blank">https://sparc-extreme.tropmet.res.in/</a>.</p> <p>This special issue has been initiated to publish the new and original research presented during STIPMEX and make it available to the wider community, and all STIPMEX presenters are encouraged to submit full write-ups of their novel and so far unpublished scientific studies. Submissions of follow-on studies or material representing a product of conference discussions and knowledge exchange are also welcome, as are any other submissions or related and relevant work that fits the scope of the workshop and special issue.</p> <p>To best accommodate the two overarching STIPMEX themes, (i) dynamical, chemical, radiative, and convective processes in general, with a particular emphasis on recent changes and trends in stratosphere–troposphere coupling and linkages between stratospheric aerosol variability (e.g. due to volcanic eruptions) and the Asian summer monsoon, and (ii) the challenges of forecasting extreme weather events during the Asian summer monsoon, the special issue is organized as an inter-journal special issue of Atmospheric Chemistry and Physics (ACP) and Weather and Climate Dynamics (WCD).</p> </div> <div class="row"> <div class="col-auto"> <a href="#" class="show-hide triangle" data-hide="#info-chronologically-content-1332" data-show="#info-chronologically-link-1332">Hide</a> </div> <div class="col text-right"> <a class="si-mobile-native-share" href="#" data-title="Exploring impacts of troposphere–stratosphere coupling processes and challenges of forecasting extreme events in the Asian summer monsoon in a changing climate" data-url="https://acp.copernicus.org/articles/special_issue1332.html" data-id="1332" style="display: none;"> <i class="fas fa-lg fa-share-alt"></i> </a> <a class="desktop-share" href="#" data-title="Exploring impacts of troposphere–stratosphere coupling processes and challenges of forecasting extreme events in the Asian summer monsoon in a changing climate" data-url="https://acp.copernicus.org/articles/special_issue1332.html" data-id="1332" title="Copy to clipboard"> <i class="fas fa-lg fa-share-alt"></i> </a> </div> </div> </div> </div> </div> <div class="grid-container grid-parent special-issue triangle_special_issues"> <div class="grid-100 tablet-grid-100 mobile-grid-100 title triangle-content"> <a href="https://acp.copernicus.org/articles/special_issue400_1320.html">The Joint Aeolus Tropical Atlantic Campaign (JATAC)</a> (AMT/ACP inter-journal SI) </div> <div class="grid-100 tablet-grid-100 mobile-grid-100 date"> 30 May 2024–31 May 2026 | ACP co-editors | Coordinators: Stelios Kazadzis (Physikalisch-Meteorologisches Observatorium Davos, Switzerland) and Manvendra Krishna Dubey (Los Alamos National Laboratory, United States) | Co-organizers: Thorsten Fehr (European Space Agency, France), Vassilis Amiridis (National Observatory of Athens, Greece), Cyrille Flamant (French National Centre for Scientific Research, France), Eleni Marinou (National Observatory of Athens, Greece), Harri Kokkola (Finnish Meteorological Institute, Finland), Marco Gaetani (Istituto Universitario di Studi Superiori di Pavia, Italy), and Oleg Dubovik (French National Centre for Scientific Research, France) | <a href="javascript:void(0);" class="info-link show-hide" id="info-chronologically-link-1320" data-show="#info-chronologically-content-1320" data-hide="#info-chronologically-link-1320">Information</a> </div> <div class="j-widget__max short_summary" id="info-chronologically-content-1320" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Information</div> <div class="content" id="1320"> <p>The Joint Aeolus Tropical Atlantic Campaign (JATAC) used ground-based, aircraft, and balloon measurements to validate data provided by ESA's Aeolus satellite and support related science activities on the interaction of wind, dust, and clouds. ESA’s Aeolus satellite observations are expected to have the biggest impact on the improvement of numerical weather prediction in the tropics. An important case relating to the predictability of tropical weather systems is the outflow of Saharan dust, its interaction with cloud microphysics, and its impact on the development of tropical storms over the Atlantic Ocean. JATAC, deployed over Cabo Verde (2021–2022) and the US Virgin Islands (2021), supported the validation and preparation of the ESA Aeolus, EarthCARE, and WIVERN missions. It also addressed science objectives regarding the Saharan aerosol layer, the African easterly waves and jet, the tropical easterly jet, and the Intertropical Convergence Zone (including their relation to the formation of convective systems) as well as the long-range transport of dust and its impact on air quality.</p> <p>This special issue (SI) collects the studies that utilized the synergy of remote sensing, surface-based, and airborne observations to address the satellite validation objectives and spatio-temporal representativeness of the different atmospheric measurement techniques. The SI studies bring together different observations from the individual ground-based and airborne campaign activities that have taken place in the frame of JATAC, to demonstrate the added value of the synergistic use of different measurements and platforms to address open science questions related to dynamics and the interactions of aerosols with clouds and radiation.</p> </div> <div class="row"> <div class="col-auto"> <a href="#" class="show-hide triangle" data-hide="#info-chronologically-content-1320" data-show="#info-chronologically-link-1320">Hide</a> </div> <div class="col text-right"> <a class="si-mobile-native-share" href="#" data-title="The Joint Aeolus Tropical Atlantic Campaign (JATAC)" data-url="https://acp.copernicus.org/articles/special_issue400_1320.html" data-id="1320" style="display: none;"> <i class="fas fa-lg fa-share-alt"></i> </a> <a class="desktop-share" href="#" data-title="The Joint Aeolus Tropical Atlantic Campaign (JATAC)" data-url="https://acp.copernicus.org/articles/special_issue400_1320.html" data-id="1320" title="Copy to clipboard"> <i class="fas fa-lg fa-share-alt"></i> </a> </div> </div> </div> </div> </div> <div class="grid-container grid-parent special-issue triangle_special_issues"> <div class="grid-100 tablet-grid-100 mobile-grid-100 title triangle-content"> <a href="https://acp.copernicus.org/articles/special_issue365_1294.html">Mercury science to inform international policy: the Multi-Compartment Hg Modeling and Analysis Project (MCHgMAP) and other research</a> (GMD/ACP/BG inter-journal SI) </div> <div class="grid-100 tablet-grid-100 mobile-grid-100 date"> 10 Nov 2023–indefinite | ACP co-editors | Coordinators: Aurélien Dommergue (Grenoble Alpes University, France) and Ralf Ebinghaus (Helmholtz-Zentrum Hereon, Germany)| Co-organizers: Ashu Dastoor (Environment and Climate Change Canada, Canada), Helene Angot (CNRS/Grenoble Alpes University, France), Aryeh Feinberg (Institute for Data, Systems, and Society, Massachusetts Institute of Technology, USA), Che-Jen Lin (Lamar University, USA), Andrei Ryjkov (Environment and Climate Change Canada, Canada), Oleg Travnikov (Jožef Stefan Institute, Slovenia), and Qingru Wu (State Key Joint Laboratory of Environmental Simulation and Pollution Control, China) | <a href="javascript:void(0);" class="info-link show-hide" id="info-chronologically-link-1294" data-show="#info-chronologically-content-1294" data-hide="#info-chronologically-link-1294">Information</a> </div> <div class="j-widget__max short_summary" id="info-chronologically-content-1294" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Information</div> <div class="content" id="1294"> <p>Mercury (Hg) is a chemical pollutant of human health concern worldwide; a consequence of anthropogenic activities; and the focus of the Minamata Convention on Mercury (MC; <a href="https://minamataconvention.org/en"target="_blank">https://minamataconvention.org/en</a>), an international treaty to protect human health and the environment from the adverse effects of mercury. The MC entered into force on 16 August 2017 and committed to limiting the use and environmental release of mercury. Also, the 1998 Protocol on Heavy Metals of the 1979 Convention on Long-Range Transboundary Air Pollution (LRTAP) commits parties to mitigating emissions of mercury (as well as cadmium and lead) from a variety of point sources and provides guidance on mitigating emissions associated with heavy metal use in manufactured products. The MC framework requires an evaluation of the effectiveness of its measures in meeting the objectives beginning no later than 6 years after the convention’s entry into force and periodically thereafter. The Protocol on Heavy Metals requires a periodic review of the progress towards meeting the obligations in the protocol and the sufficiency and effectiveness of those obligations and an evaluation of whether additional emission reductions are warranted.</p> <p>This multi-journal special issue (SI) is intended to develop the required information that can be scientifically exploited to address key policy questions of the conventions: (1) what are the contributions of anthropogenic emissions and releases and other Hg sources to current Hg levels observed in air, biota, humans, and other media? (2) How have these contribution levels changed over time and over the timeline of the convention? (3) How do the contribution levels and their trends vary geographically at the global scale? (4) What are the contributions of anthropogenic emissions and releases and other drivers to the temporal trends in observed Hg levels across global regions? (5) How are observed Hg levels expected to change in the future?</p> <p>The special issue aims at collecting relevant research advances arising from the design, implementation, and results of the Multi-Compartment Hg Modeling and Analysis Project (MCHgMAP) and from the scientific community on all aspects of biogeochemical mercury cycling, including primary and secondary emissions, observations, process studies, and single to multi-compartmental and statistical model development and application. A challenge of analysing the fate of emitted mercury is that it can recycle between the atmosphere, land, and ocean, and as a result, past and present emissions can continue to affect the environment on timescales of decades to centuries. MCHgMAP is an ensemble modelling initiative developed to inform the effectiveness of evaluations of the MC and LRTAP, utilizing a coordinated modelling approach between single-medium (atmosphere, land, and ocean) and multi-media mercury models to consistently simulate the changing global and regional environmental Hg cycling and analyse its drivers. The SI includes an overview paper on MCHgMAP, describing its scientific background and design (an important and crucial preparatory stage), which will be referenced by the individual papers on this project that follow.</p> </div> <div class="row"> <div class="col-auto"> <a href="#" class="show-hide triangle" data-hide="#info-chronologically-content-1294" data-show="#info-chronologically-link-1294">Hide</a> </div> <div class="col text-right"> <a class="si-mobile-native-share" href="#" data-title="Mercury science to inform international policy: the Multi-Compartment Hg Modeling and Analysis Project (MCHgMAP) and other research" data-url="https://acp.copernicus.org/articles/special_issue365_1294.html" data-id="1294" style="display: none;"> <i class="fas fa-lg fa-share-alt"></i> </a> <a class="desktop-share" href="#" data-title="Mercury science to inform international policy: the Multi-Compartment Hg Modeling and Analysis Project (MCHgMAP) and other research" data-url="https://acp.copernicus.org/articles/special_issue365_1294.html" data-id="1294" title="Copy to clipboard"> <i class="fas fa-lg fa-share-alt"></i> </a> </div> </div> </div> </div> </div> <div class="grid-container grid-parent special-issue triangle_special_issues"> <div class="grid-100 tablet-grid-100 mobile-grid-100 title triangle-content"> <a href="https://acp.copernicus.org/articles/special_issue400_1291.html">RUSTED: Reducing Uncertainty in Soluble aerosol Trace Element Deposition</a> (AMT/ACP/AR/BG inter-journal SI) </div> <div class="grid-100 tablet-grid-100 mobile-grid-100 date"> 02 Nov 2023–31 Oct 2026 | ACP co-editors | Coordinators: Maria Kanakidou (University of Crete, Greece) and James Allan (University of Manchester, UK) | Co-organizers: Suzanne Fietz (Stellenbosch University, South Afrca), Douglas Hamilton (North Carolina State University, USA), Akinori Ito (Japan Agency for Marine-Earth Science and Technology, Japan), Morgane Perron (Laboratoire des Sciences de l'Environnement Marin, France), and Mingjin Tang (Chinese Academy of Sciences, China) | <a href="javascript:void(0);" class="info-link show-hide" id="info-chronologically-link-1291" data-show="#info-chronologically-content-1291" data-hide="#info-chronologically-link-1291">Information</a> </div> <div class="j-widget__max short_summary" id="info-chronologically-content-1291" style="display: none"> <div class="widget dark-border"> <div class="legend journal-contentLinkColor">Information</div> <div class="content" id="1291"> <p> SCOR (Scientific Committee on Oceanic Research) Working Group 167 (Reducing Uncertainty in Soluble aerosol Trace Element Deposition, RUSTED), appointed in October 2022, brings together experts from the atmospheric chemistry, ocean biogeochemistry, and modelling communities. Aiming to reduce uncertainties in soluble aerosol trace element deposition, RUSTED will quantitatively assess different aerosol leaching schemes; formulate standard operating procedures (SOPs) for frequently used aerosol leaching schemes; and develop a user-friendly, open-access database of aerosol trace element data which includes advice on the use of the data in Earth system models. </p> <p> In this special issue, we propose to curate cutting-edge studies which advance our knowledge of the deposition of soluble aerosol trace elements and their impacts on marine ecosystems. We also encourage the submission of manuscripts which address challenges and/or report recent advances in the field of aerosol trace element deposition from researchers outside the working group. </p> </div> <div class="row"> <div class="col-auto"> <a href="#" class="show-hide triangle" data-hide="#info-chronologically-content-1291" data-show="#info-chronologically-link-1291">Hide</a> </div> <div class="col text-right"> <a class="si-mobile-native-share" href="#" data-title="RUSTED: Reducing Uncertainty in Soluble aerosol Trace Element Deposition" data-url="https://acp.copernicus.org/articles/special_issue400_1291.html" data-id="1291" style="display: none;"> <i class="fas fa-lg fa-share-alt"></i> </a> <a class="desktop-share" href="#" data-title="RUSTED: Reducing Uncertainty in Soluble aerosol Trace Element Deposition" data-url="https://acp.copernicus.org/articles/special_issue400_1291.html" data-id="1291" title="Copy to clipboard"> <i class="fas fa-lg fa-share-alt"></i> </a> </div> </div> </div> </div> </div> </div> </div> <script> $(function (){ if(!navigator.share){ $('.si-mobile-native-share').hide(); $('.desktop-share').show(); } else { $('.si-mobile-native-share').show(); $('.desktop-share').hide(); } $('.si-mobile-native-share').click((event) => { event.stopPropagation(); event.preventDefault(); event.stopImmediatePropagation(); let element = event.currentTarget; if (navigator.share) { let url = window.getUrl(element); navigator.share({ title: $(element).attr('data-title'), text: '', url: url, }).then(() => { console.log('Successful share'); return false; }) .catch((error) => { console.log('Error sharing', error); return false; }); } return false; }); $('.desktop-share').click((event) => { event.stopPropagation(); event.preventDefault(); event.stopImmediatePropagation(); let element = event.currentTarget; let url = window.getUrl(element); window.updateClipboard(url); return false; }); }); /** * Method for copy something to clipboard * @param newClip */ window.updateClipboard = function (newClip) { if (navigator.clipboard) { navigator.clipboard.writeText(newClip).then(function () { }, function (err) { console.warn('Error during copying to clipboard: ', err.toString()); }); } return false; }; window.getUrl = function (element){ let dataUrl = $(element).attr('data-url'); if(typeof dataUrl !== 'undefined' && dataUrl.length > 0) { return dataUrl } else { let id = $(element).attr('data-id'); return window.location.href + '#' + id; } } </script> </div><div id="cmsbox_285981" class="cmsbox "><h2>Notice on the current situation in Ukraine</h2> <div class="co-notification"><p>To show our support for Ukraine, all fees for papers from authors (first or corresponding authors) affiliated to <strong>Ukrainian institutions</strong> are automatically waived, regardless if these papers are co-authored by scientists affiliated to Russian and/or Belarusian institutions. 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