The dynamic surface tension of atmospheric aerosol surfactants reveals new aspects of cloud activation
Identifieur interne : 003442 ( Main/Exploration ); précédent : 003441; suivant : 003443The dynamic surface tension of atmospheric aerosol surfactants reveals new aspects of cloud activation
Auteurs : Barbara Nozière [Suède, France] ; Christine Baduel [Suède, Australie] ; Jean-Luc Jaffrezo [France]Source :
- Nature Communications [ 2041-1723 ] ; 2014.
Abstract
The activation of aerosol particles into cloud droplets in the Earth’s atmosphere is both a key process for the climate budget and a main source of uncertainty. Its investigation is facing major experimental challenges, as no technique can measure the main driving parameters, the Raoult’s term and surface tension,
Url:
DOI: 10.1038/ncomms4335
PubMed: 24566451
PubMed Central: 3948073
Affiliations:
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Environmental Toxicology, The University of Queensland, Brisbane, Queensland</wicri:regionArea><wicri:noRegion>Queensland</wicri:noRegion></affiliation></author><author><name sortKey="Jaffrezo, Jean Luc" sort="Jaffrezo, Jean Luc" uniqKey="Jaffrezo J" first="Jean-Luc" last="Jaffrezo">Jean-Luc Jaffrezo</name><affiliation wicri:level="1"><nlm:aff id="a2"><institution>Université Joseph Fourier-Grenoble 1/CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement UMR 5183</institution>, Grenoble F-38041,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">24566451</idno><idno type="pmc">3948073</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3948073</idno><idno type="RBID">PMC:3948073</idno><idno type="doi">10.1038/ncomms4335</idno><date when="2014">2014</date><idno 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uniqKey="Noziere B" first="Barbara" last="Nozière">Barbara Nozière</name><affiliation wicri:level="1"><nlm:aff id="a1"><institution>Stockholm University, Department of Applied Environmental Science (ITM)</institution>, Svante Arrhenius väg 8, Stockholm 106 91,<country>Sweden</country></nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="3"><nlm:aff id="a3">Present address: Institut de Recherches sur la Catalyse et l’Environnement de Lyon, UMR5256, CNRS and Université Claude Bernard Lyon 1, Villeurbanne 69626, France</nlm:aff><country xml:lang="fr">France</country><wicri:regionArea>Present address: Institut de Recherches sur la Catalyse et l’Environnement de Lyon, UMR5256, CNRS and Université Claude Bernard Lyon 1, Villeurbanne 69626</wicri:regionArea><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author><author><name sortKey="Baduel, Christine" sort="Baduel, Christine" uniqKey="Baduel C" first="Christine" last="Baduel">Christine Baduel</name><affiliation wicri:level="1"><nlm:aff id="a1"><institution>Stockholm University, Department of Applied Environmental Science (ITM)</institution>, Svante Arrhenius väg 8, Stockholm 106 91,<country>Sweden</country></nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="a4">Present address: The National Research Center for Environmental Toxicology, The University of Queensland, Brisbane, Queensland, Australia</nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea>Present address: The National Research Center for Environmental Toxicology, The University of Queensland, Brisbane, Queensland</wicri:regionArea><wicri:noRegion>Queensland</wicri:noRegion></affiliation></author><author><name sortKey="Jaffrezo, Jean Luc" sort="Jaffrezo, Jean Luc" uniqKey="Jaffrezo J" first="Jean-Luc" last="Jaffrezo">Jean-Luc Jaffrezo</name><affiliation wicri:level="1"><nlm:aff id="a2"><institution>Université Joseph Fourier-Grenoble 1/CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement UMR 5183</institution>, Grenoble F-38041,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author></analytic><series><title level="j">Nature Communications</title><idno type="eISSN">2041-1723</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The activation of aerosol particles into cloud droplets in the Earth’s atmosphere is both a key process for the climate budget and a main source of uncertainty. Its investigation is facing major experimental challenges, as no technique can measure the main driving parameters, the Raoult’s term and surface tension, <italic>σ</italic>, for sub-micron atmospheric particles. In addition, the surfactant fraction of atmospheric aerosols could not be isolated until recently. Here we present the first dynamic investigation of the total surfactant fraction of atmospheric aerosols, evidencing adsorption barriers that limit their gradient (partitioning) in particles and should enhance their cloud-forming efficiency compared with current models. The results also show that the equilibration time of surfactants in sub-micron atmospheric particles should be beyond the detection of most on-line instruments. Such instrumental and theoretical shortcomings would be consistent with atmospheric and laboratory observations and could have limited the understanding of cloud activation until now.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Kohler, H" uniqKey="Kohler H">H. Köhler</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Mcfiggans, G" uniqKey="Mcfiggans G">G. McFiggans</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Duplissy, J J" uniqKey="Duplissy J">J. J. Duplissy</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kiss, G" uniqKey="Kiss G">G. Kiss</name></author><author><name sortKey="Tombacz, E" uniqKey="Tombacz E">E. Tombácz</name></author><author><name sortKey="Hansson, H C" uniqKey="Hansson H">H.-C. Hansson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Salma, I" uniqKey="Salma I">I. 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McNeill</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>Australie</li><li>France</li><li>Suède</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Rhône-Alpes</li></region></list><tree><country name="Suède"><noRegion><name sortKey="Noziere, Barbara" sort="Noziere, Barbara" uniqKey="Noziere B" first="Barbara" last="Nozière">Barbara Nozière</name></noRegion><name sortKey="Baduel, Christine" sort="Baduel, Christine" uniqKey="Baduel C" first="Christine" last="Baduel">Christine Baduel</name></country><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Noziere, Barbara" sort="Noziere, Barbara" uniqKey="Noziere B" first="Barbara" last="Nozière">Barbara Nozière</name></region><name sortKey="Jaffrezo, Jean Luc" sort="Jaffrezo, Jean Luc" uniqKey="Jaffrezo J" first="Jean-Luc" last="Jaffrezo">Jean-Luc Jaffrezo</name></country><country name="Australie"><noRegion><name sortKey="Baduel, Christine" sort="Baduel, Christine" uniqKey="Baduel C" first="Christine" last="Baduel">Christine Baduel</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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