气候变化领域集成服务门户(CCPortal): Aerosol indirect effects on the temperature-precipitation scaling

CCPortal

DOI	10.5194/acp-20-6207-2020
	Aerosol indirect effects on the temperature-precipitation scaling
	Da Silva N.; Mailler S.; Drobinski P.
发表日期	2020
ISSN	16807316
起始页码	6207
结束页码	6223
卷号	20 期号:10
英文摘要	Aerosols may impact precipitation in a complex way involving their direct and indirect effects. In a previous numerical study, the overall microphysical effect of aerosols was found to weaken precipitation through reduced precipitable water and convective instability. The present study aims to quantify the relative importance of these two processes in the reduction of summer precipitation using temperature-precipitation scaling. Based on a numerical sensitivity experiment conducted in central Europe aiming to isolate indirect effects, the results show that, all others effects being equal, the scaling of hourly convective precipitation with temperature follows the Clausius-Clapeyron (CC) relationship, whereas the decrease in convective precipitation does not scale with the CC law since it is mostly attributable to increased stability with increased aerosol concentration rather than to decreased precipitable water content. This effect is larger at low surface temperatures at which clouds are statistically more frequent and optically thicker. At these temperatures, the increase in stability is mostly linked to the stronger reduction in temperature in the lower troposphere compared to the upper troposphere, which results in lower lapse rates. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
关键词	aerosol air temperature cloud cover concentration (composition)precipitation (climatology)surface temperature troposphere water content Central Europe
语种	英语
来源机构	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132007
推荐引用方式 GB/T 7714	Da Silva N.,Mailler S.,Drobinski P.. Aerosol indirect effects on the temperature-precipitation scaling[J]. Atmospheric Chemistry and Physics,2020,20(10).
APA	Da Silva N.,Mailler S.,&Drobinski P..(2020).Aerosol indirect effects on the temperature-precipitation scaling.,20(10).
MLA	Da Silva N.,et al."Aerosol indirect effects on the temperature-precipitation scaling".20.10(2020).