气候变化领域集成服务门户(CCPortal): An Unknown Maximum Lag-Correlation Between Rainfall and Aerosols at 140

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DOI	10.1029/2020GL089334
	An Unknown Maximum Lag-Correlation Between Rainfall and Aerosols at 140–160 Minutes
	Alpert P.; Shafir H.; Elhacham E.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:2
英文摘要	Rainfall and aerosols play major roles in the Earth climate system and substantially influence our life. Here, the focus is on the local near-surface aerosol/rainfall correlations with time scales of minutes to days. We investigated 29 experiments including 14 specific rain events, with time resolutions of daily and 60, 30, and 10 min at 10 stations in Israel and California. The highest negative correlations were consistently at a positive lag of about 140–160 min where a positive lag means that the aerosol time series follows that of the rain. The highest negative value is suggested to be the probable outcome of immediate scavenging along with the rise in aerosol concentration after rain depending on aerosol sources, hygroscopic growth, and transport. The scavenging dominance is expressed by the mostly negative lag-correlation values in all experiments. In addition, the consistent lack of significant correlation found at negative lags suggests a weak aerosol effect on precipitation. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Aerosols; Rain; Aerosol concentration; Aerosol effect; Aerosol source; Correlation value; Hygroscopic growth; Negative correlation; Negative values; Time resolution; Atmospheric movements
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169183
作者单位	Department of Geophysics, Tel Aviv University, Tel Aviv, Israel
推荐引用方式 GB/T 7714	Alpert P.,Shafir H.,Elhacham E.. An Unknown Maximum Lag-Correlation Between Rainfall and Aerosols at 140–160 Minutes[J],2021,48(2).
APA	Alpert P.,Shafir H.,&Elhacham E..(2021).An Unknown Maximum Lag-Correlation Between Rainfall and Aerosols at 140–160 Minutes.Geophysical Research Letters,48(2).
MLA	Alpert P.,et al."An Unknown Maximum Lag-Correlation Between Rainfall and Aerosols at 140–160 Minutes".Geophysical Research Letters 48.2(2021).