%0 Journal Article %T Global analysis of aerosol properties above clouds %+ Laboratoire d’Optique Atmosphérique - UMR 8518 (LOA) %A Waquet, F. %A Peers, F. %A Ducos, F. %A Goloub, P. %A Platnick, S. %A Riedi, J. %A Tanré, D. %A Thieuleux, F. %< avec comité de lecture %@ 0094-8276 %J Geophysical Research Letters %I American Geophysical Union %V 40 %P 5809-5814 %8 2013 %D 2013 %Z 2013GeoRL..40.5809W %R 10.1002/2013GL057482 %K aerosol %K climate %K cloud %K satellite %K global %Z Sciences of the Universe [physics]Journal articles %X seasonal and spatial variability of Aerosol Above Cloud (AAC) properties are derived from passive satellite data for the year 2008. A significant amount of aerosols are transported above liquid water clouds on the global scale. For particles in the fine mode (i.e., radius smaller than 0.3 µm), including both clear-sky and AAC, retrievals increase the global mean aerosol optical thickness by 25(±6)%. The two main regions of originated anthropogenic AAC are the tropical Southeast Atlantic, for biomass-burning aerosols, and the North Pacific, mainly for pollutants. Man-made AAC are also detected over the Arctic during the spring. Mineral dust particles are detected above clouds within the so-called "dust belt" region (5-40° N). AAC may cause a warming effect and bias the retrieval of the cloud properties. This study will then help to better quantify the impacts of aerosols on clouds and climate. %G English %2 https://insu.hal.science/insu-03620880/document %2 https://insu.hal.science/insu-03620880/file/Geophysical%20Research%20Letters%20-%202013%20-%20Waquet%20-%20Global%20analysis%20of%20aerosol%20properties%20above%20clouds.pdf %L insu-03620880 %U https://insu.hal.science/insu-03620880 %~ INSU %~ CNRS %~ UNIV-LILLE