气候变化领域集成服务门户(CCPortal): Distinct regional meteorological influences on low-cloud albedo susceptibility over global marine stratocumulus regions

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DOI	10.5194/acp-23-1073-2023
	Distinct regional meteorological influences on low-cloud albedo susceptibility over global marine stratocumulus regions
	Zhang, Jianhao; Feingold, Graham
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	1073
结束页码	1090
卷号	23 期号:2 页码:18
英文摘要	Marine stratocumuli cool the Earth effectively due to their high reflectance of incoming solar radiation and persistent occurrence. The susceptibility of cloud albedo to droplet number concentration perturbations depends strongly on large-scale meteorological conditions. Studies focused on the meteorological dependence of cloud adjustments often overlook the covariability among meteorological factors and their geographical and temporal variability. We use 8 years of satellite observations sorted by day and geographical location to show the global distribution of marine low-cloud albedo susceptibility. We find an overall cloud brightening potential for most marine warm clouds, which is more pronounced over subtropical coastal regions. A weak cloud darkening potential in the annual mean is evident over the remote SE Pacific and SE Atlantic. We show that large-scale meteorological fields from the ERA5 reanalysis data, including lower-tropospheric stability, free-tropospheric relative humidity, sea surface temperature, and boundary layer depth, have distinct covariabilities over each of the eastern subtropical ocean basins where marine stratocumuli prevail. This leads to a markedly different annual cycle in albedo susceptibility over each basin. Moreover, we find that basin-specific regional relationships between key meteorological factors and albedo susceptibilities are absent in a global analysis. Our results stress the importance of considering the geographical distinctiveness of temporal meteorological covariability when scaling up the local-to-global response of cloud albedo to aerosol perturbations.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000919463000001
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/273094
作者单位	University of Colorado System; University of Colorado Boulder; National Oceanic Atmospheric Admin (NOAA) - USA
推荐引用方式 GB/T 7714	Zhang, Jianhao,Feingold, Graham. Distinct regional meteorological influences on low-cloud albedo susceptibility over global marine stratocumulus regions[J],2023,23(2):18.
APA	Zhang, Jianhao,&Feingold, Graham.(2023).Distinct regional meteorological influences on low-cloud albedo susceptibility over global marine stratocumulus regions.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(2),18.
MLA	Zhang, Jianhao,et al."Distinct regional meteorological influences on low-cloud albedo susceptibility over global marine stratocumulus regions".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.2(2023):18.