气候变化领域集成服务门户(CCPortal): Footprint of Tropical Mesoscale Convective System Variability on Stratospheric Water Vapor

CCPortal

DOI	10.1029/2019GL086320
	Footprint of Tropical Mesoscale Convective System Variability on Stratospheric Water Vapor
	Dong W.H.; Lin Y.L.; Zhang M.H.; Huang X.M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:5
英文摘要	Mesoscale convective systems (MCSs) play a dominant role in tropical climate. However, the variabilities of their occurrences on a tropical-wide scale remain elusive, and the way they impact the tropical stratospheric moisture remains under debate. Based on a comprehensive global MCS data set during 1985–2008, we detect distinct transitions in tropical MCS activities, with the occurrence frequency of MCS during 1995–2002 being significantly lower than those before and after this period by over 10%. The stepwise transition of tropical MCSs has a significant impact on stratospheric water vapor: Active MCS occurrences result in an overall drier stratosphere, and vice versa. We demonstrate that these changes are closely related to the sea surface temperature pattern in the tropical central Pacific and the associated Walker circulation shift on convective systems. Our results suggest that the sea surface temperature variability in tropical central Pacific may exert an important forcing on the stratospheric water vapor. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric temperature; Oceanography; Submarine geophysics; Surface properties; Surface waters; Tropics; Water vapor; equatorial central Pacific; Mesoscale Convective System; Sea surface temperature (SST); Tropical climates; Walker circulation; Storms; atmospheric circulation; atmospheric convection; sea surface temperature; stratosphere; tropical environment; Walker circulation; water vapor; Pacific Ocean; Pacific Ocean (Central)
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/170626
作者单位	Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, and Joint Center for Global Change Studies (JCGCS), Tsinghua University, Beijing, China; Now at Cooperative Programs for the Advancement of Earth System Science, University Corporation for Atmospheric Research, Boulder, CO, United States; Now at NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States; School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, United States
推荐引用方式 GB/T 7714	Dong W.H.,Lin Y.L.,Zhang M.H.,et al. Footprint of Tropical Mesoscale Convective System Variability on Stratospheric Water Vapor[J],2020,47(5).
APA	Dong W.H.,Lin Y.L.,Zhang M.H.,&Huang X.M..(2020).Footprint of Tropical Mesoscale Convective System Variability on Stratospheric Water Vapor.Geophysical Research Letters,47(5).
MLA	Dong W.H.,et al."Footprint of Tropical Mesoscale Convective System Variability on Stratospheric Water Vapor".Geophysical Research Letters 47.5(2020).