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Article Dans Une Revue Atmospheric Environment Année : 2009

Atmospheric composition change: Climate–Chemistry interactions

1 Department of Geosciences [Oslo]
2 CICERO - Center for International Climate and Environmental Research [Oslo]
3 ESRL - NOAA Earth System Research Laboratory
4 CIRES - Cooperative Institute for Research in Environmental Sciences
5 TROPO - LATMOS
6 MET - Norwegian Meteorological Institute [Oslo]
7 IIASA - International Institute for Applied Systems Analysis [Laxenburg]
8 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
9 SATINV - Modélisation INVerse pour les mesures atmosphériques et SATellitaires
10 United Kingdom Met Office [Exeter]
11 Centre for Atmospheric Science [Cambridge, UK]
12 DLR - Deutsches Zentrum für Luft- und Raumfahrt
13 CEH - NERC Centre of Ecology and Hydrology
14 ISAC - Istituto di Scienze dell'Atmosfera e del Clima
15 MPIC - Max Planck Institute for Chemistry
16 LaMP - Laboratoire de météorologie physique
17 LGGE - Laboratoire de glaciologie et géophysique de l'environnement
18 ETH Zürich - Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich]
19 Istituto di Scienze Chimiche “F. Bruner”
20 Department of Chemistry [Leicester]
21 LAC - Laboratory of Atmospheric Chemistry [Paul Scherrer Institute]
22 JRC - European Commission - Joint Research Centre [Ispra]
23 IUP - Institut für Umweltphysik [Bremen]
24 GISS - NASA Goddard Institute for Space Studies
25 School of Geosciences [Edinburgh]
26 ASRC - Atmospheric Sciences Research Center
27 KNMI - Royal Netherlands Meteorological Institute
28 Department of Atmospheric Sciences [Urbana]
D. Shindell

Résumé

Chemically active climate compounds are either primary compounds like methane (CH4), removed by oxidation in the atmosphere, or secondary compounds like ozone (O3), sulfate and organic aerosols, both formed and removed in the atmosphere. Man-induced climate–chemistry interaction is a two-way process: Emissions of pollutants change the atmospheric composition contributing to climate change through the aforementioned climate components, and climate change, through changes in temperature, dynamics, the hydrological cycle, atmospheric stability, and biosphere-atmosphere interactions, affects the atmospheric composition and oxidation processes in the troposphere. Here we present progress in our understanding of processes of importance for climate–chemistry interactions, and their contributions to changes in atmospheric composition and climate forcing. A key factor is the oxidation potential involving compounds like O3 and the hydroxyl radical (OH). Reported studies represent both current and future changes. Reported results include new estimates of radiative forcing based on extensive model studies of chemically active climate compounds like O3, and of particles inducing both direct and indirect effects. Through EU projects like ACCENT, QUANTIFY, and the AeroCom project, extensive studies on regional and sector-wise differences in the impact on atmospheric distribution are performed.

Dates et versions

hal-00422520 , version 1 (07-10-2009)

Identifiants

Citer

I.S.A. Isaksen, Claire Granier, G. Myhre, T.K. Berntsen, S.B. Dalsøren, et al.. Atmospheric composition change: Climate–Chemistry interactions. Atmospheric Environment, 2009, 43 (33), pp.5138-5192. ⟨10.1016/j.atmosenv.2009.08.003⟩. ⟨hal-00422520⟩
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