Comparison of the radiative properties and direct radiative effect of aerosols from a global aerosol model and remote sensing data over ocean

被引:83
作者
Myhre, Gunnar
Bellouin, Nicolas
Berglen, Tore F.
Berntsen, Terje K.
Boucher, Olivier
Grini, Alf
Isaksen, Ivar S. A.
Johnsrud, Mona
Mishchenko, Michael I.
Stordal, Frode
Tanre, Didier
机构
[1] Univ Oslo, Dept Geosci, N-0315 Oslo, Norway
[2] Ctr Int Climate & Environm Res, Oslo, Norway
[3] Norwegian Inst Air Res, Kjeller, Norway
[4] Met Off, Exeter, Devon, England
[5] Meteo France, CNRM, GMEI, Toulouse, France
[6] NASA, Goddard Inst Space Studies, New York, NY 10025 USA
[7] Univ Sci & Tech Lille Flandres Artois, CNRS, Opt Atmospher Lab, Villeneuve Dascq, France
来源
TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY | 2007年 / 59卷 / 01期
关键词
D O I
10.1111/j.1600-0889.2006.00238.x
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
A global aerosol transport model (Oslo CTM2) with main aerosol components included is compared to five satellite retrievals of aerosol optical depth (AOD) and one data set of the satellite-derived radiative effect of aerosols. The model is driven with meteorological data for the period November 1996 to June 1997 which is the time period investigated in this study. The modelled AOD is within the range of the AOD from the various satellite retrievals over oceanic regions. The direct radiative effect of the aerosols as well as the atmospheric absorption by aerosols are in both cases found to be of the order of 20 Wm(-2) in certain regions in both the satellite-derived and the modelled estimates as a mean over the period studied. Satellite and model data exhibit similar patterns of aerosol optical depth, radiative effect of aerosols, and atmospheric absorption of the aerosols. Recently published results show that global aerosol models have a tendency to underestimate the magnitude of the clear-sky direct radiative effect of aerosols over ocean compared to satellite-derived estimates. However, this is only to a small extent the case with the Oslo CTM2. The global mean direct radiative effect of aerosols over ocean is modelled with the Oslo CTM2 to be -5.5 Wm(-2) and the atmospheric aerosol absorption 1.5 Wm(-2).
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收藏
页码:115 / 129
页数:15
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