气候变化领域集成服务门户(CCPortal): Observational Evidence for a Stability Iris Effect in the Tropics

CCPortal

DOI	10.1029/2020GL089059
	Observational Evidence for a Stability Iris Effect in the Tropics
	Saint-Lu M.; Bony S.; Dufresne J.-L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	Anvil clouds cover extensive areas of the tropics, and their response to global warming can affect cloud feedbacks and climate sensitivity. A growing number of models and theories suggest that when the tropical atmosphere warms, anvil clouds rise and their coverage decreases, but observational support for this behavior remains limited. Here we use 10 years of measurements from the space-borne CALIPSO lidar to analyze the vertical distribution of clouds and isolate the behavior of anvil clouds. On the interannual time scale, we find a strong evidence for anvil rise and coverage decrease in response to tropical warming. Using meteorological reanalyses, we show that this is associated with an increase in static stability and with a reduction in clear-sky radiatively driven mass convergence at the anvil height. These relationships hold over a large range of spatial scales. This is consistent with the stability Iris mechanism suggested by theory and modeling studies. ©2020. The Authors.
英文关键词	Global warming; Calipso lidars; Climate sensitivity; Cloud feedbacks; Interannual time scale; Static stability; Theory and modeling; Tropical atmospheres; Vertical distributions; Tropics; CALIPSO; climate feedback; global warming; lidar; observational method; sensitivity analysis; spatial analysis; subtropical convergence; tropical environment; vertical distribution
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/170084
作者单位	Laboratoire de Météorologie Dynamique (LMD)/Institut Pierre Simon Laplace (IPSL), Sorbonne Université/CNRS/École Normale Supérieure/École Polytechnique, Paris, France
推荐引用方式 GB/T 7714	Saint-Lu M.,Bony S.,Dufresne J.-L.. Observational Evidence for a Stability Iris Effect in the Tropics[J],2020,47(14).
APA	Saint-Lu M.,Bony S.,&Dufresne J.-L..(2020).Observational Evidence for a Stability Iris Effect in the Tropics.Geophysical Research Letters,47(14).
MLA	Saint-Lu M.,et al."Observational Evidence for a Stability Iris Effect in the Tropics".Geophysical Research Letters 47.14(2020).