气候变化领域集成服务门户(CCPortal): Deciphering organization of GOES-16 green cumulus through the empirical orthogonal function (EOF) lens

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DOI	10.5194/acp-21-12261-2021
	Deciphering organization of GOES-16 green cumulus through the empirical orthogonal function (EOF) lens
	Dror T.; Chekroun M.D.; Altaratz O.; Koren I.
发表日期	2021
ISSN	1680-7316
起始页码	12261
结束页码	12272
卷号	21 期号:16
英文摘要	A subset of continental shallow convective cumulus (Cu) cloud fields has been shown to have distinct spatial properties and to form mostly over forests and vegetated areas, thus referred to as "green Cu". Green Cu fields are known to form organized mesoscale patterns, yet the underlying mechanisms, as well as the time variability of these patterns, are still lacking understanding. Here, we characterize the organization of green Cu in space and time, by using data-driven organization metrics and by applying an empirical orthogonal function (EOF) analysis to a high-resolution GOES-16 dataset. We extract, quantify, and reveal modes of organization present in a green Cu field, during the course of a day. The EOF decomposition is able to show the field's key organization features such as cloud streets, and it also delineates the less visible ones, as the propagation of gravity waves (GWs) and the emergence of a highly organized grid on a spatial scale of hundreds of kilometers, over a time period that scales with the field's lifetime. Using cloud fields that were reconstructed from different subgroups of modes, we quantify the cloud street's wavelength and aspect ratio, as well as the GW-dominant period. © 2021 Tom Dror et al.
语种	英语
scopus关键词	cloud microphysics; convective system; cumulus; data set; decomposition analysis; empirical orthogonal function analysis; GOES; gravity wave; mesoscale meteorology; spatial analysis; wave propagation; wavelength
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/246652
作者单位	Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, Israel
推荐引用方式 GB/T 7714	Dror T.,Chekroun M.D.,Altaratz O.,et al. Deciphering organization of GOES-16 green cumulus through the empirical orthogonal function (EOF) lens[J],2021,21(16).
APA	Dror T.,Chekroun M.D.,Altaratz O.,&Koren I..(2021).Deciphering organization of GOES-16 green cumulus through the empirical orthogonal function (EOF) lens.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(16).
MLA	Dror T.,et al."Deciphering organization of GOES-16 green cumulus through the empirical orthogonal function (EOF) lens".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.16(2021).