气候变化领域集成服务门户(CCPortal): Quantifying cloud adjustments and the radiative forcing due to aerosol-cloud interactions in satellite observations of warm marine clouds

CCPortal

DOI	10.5194/acp-20-6225-2020
	Quantifying cloud adjustments and the radiative forcing due to aerosol-cloud interactions in satellite observations of warm marine clouds
	Douglas A.; L'Ecuyer T.
发表日期	2020
ISSN	1680-7316
起始页码	6225
结束页码	6241
卷号	20 期号:10
英文摘要	Aerosol-cloud interactions and their resultant forcing remains one of the largest sources of uncertainty in future climate scenarios. The effective radiative forcing due to aerosol-cloud interactions (ERFaci) is a combination of two different effects, namely how aerosols modify cloud brightness (RFaci, intrinsic) and how cloud extent reacts to aerosol (cloud adjustments CA; extrinsic). Using satellite observations of warm clouds from the NASA ATrain constellation from 2007 to 2010 along with MERRA- 2 Reanalysis and aerosol from the SPRINTARS model, we evaluate the ERFaci in warm, marine clouds and its components, the RFaciwarm and CAwarm, while accounting for the liquid water path and local environment. We estimate the ERFaciwarm to be 0:320:16Wm2. The RFaciwarm dominates the ERFaciwarm contributing 80% (0:210:15Wm2), while the CAwarm enhances this cooling by 20% (0:050:03Wm2). Both the RFaciwarm and CAwarm vary in magnitude and sign regionally and can lead to opposite, negating effects under certain environmental conditions.Without considering the two terms separately and without constraining cloud-environment interactions, weak regional ERFaciwarm signals may be erroneously attributed to a damped susceptibility to aerosol. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	aerosol; cloud radiative forcing; environmental conditions; marine atmosphere; satellite imagery
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141316
作者单位	University of Wisconsin-Madison, 1225 W. Dayton St., Madison, WI, United States; Cooperative Institute for Meteorological and Satellite Studies, 1225 W. Dayton St., Madison, WI, United States
推荐引用方式 GB/T 7714	Douglas A.,L'Ecuyer T.. Quantifying cloud adjustments and the radiative forcing due to aerosol-cloud interactions in satellite observations of warm marine clouds[J],2020,20(10).
APA	Douglas A.,&L'Ecuyer T..(2020).Quantifying cloud adjustments and the radiative forcing due to aerosol-cloud interactions in satellite observations of warm marine clouds.Atmospheric Chemistry and Physics,20(10).
MLA	Douglas A.,et al."Quantifying cloud adjustments and the radiative forcing due to aerosol-cloud interactions in satellite observations of warm marine clouds".Atmospheric Chemistry and Physics 20.10(2020).