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| Titel |
Estimation of Asian dust aerosol effect on cloud radiation forcing using Fu-Liou radiative model and CERES measurements |
| VerfasserIn |
Jing Su, Jianping Huang, Qiang Fu, P. Minnis, Jinming Ge, Bi Jianrong |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 8, no. 10 ; Nr. 8, no. 10 (2008-05-23), S.2763-2771 |
| Datensatznummer |
250006150
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| Publikation (Nr.) |
 copernicus.org/acp-8-2763-2008.pdf |
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| Zusammenfassung |
| The impact of Asian dust on cloud radiative forcing during 2003–2006 is
studied by using the Clouds and Earth's Radiant Energy Budget Scanner
(CERES) data and the Fu-Liou radiative transfer model. Analysis of satellite
data shows that the dust aerosol significantly reduced the cloud cooling
effect at TOA. In dust contaminated cloudy regions, the 4-year mean values
of the instantaneous shortwave, longwave and net cloud radiative forcing are
−138.9, 69.1, and −69.7 Wm−2, which are 57.0, 74.2, and 46.3%,
respectively, of the corresponding values in pristine cloudy regions. The
satellite-retrieved cloud properties are significantly different in the
dusty regions and can influence the radiative forcing indirectly. The
contributions to the cloud radiation forcing by the dust direct, indirect
and semi-direct effects are estimated using combined satellite observations
and Fu-Liou model simulation. The 4-year mean value of combination of dust
indirect and semi-direct shortwave radiative forcing (SWRF) is 82.2 Wm−2, which is 78.4% of the total dust effect. The dust direct
effect is only 22.7 Wm−2, which is 21.6% of the total effect.
Because both first and second indirect effects enhance cloud cooling, the
aerosol-induced cloud warming is mainly the result of the semi-direct effect
of dust. |
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