globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-016-3123-6
Scopus记录号: 2-s2.0-84964350243
论文题名:
Relative roles of differential SST warming, uniform SST warming and land surface warming in determining the Walker circulation changes under global warming
作者: Zhang L.; Li T.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期:2017-03-04
起始页码: 987
结束页码: 997
语种: 英语
英文关键词: Global warming ; The Walker circulation ; Uniform SST warming and extra land warming
英文摘要: Most of CMIP5 models projected a weakened Walker circulation in tropical Pacific, but what causes such change is still an open question. By conducting idealized numerical simulations separating the effects of the spatially uniform sea surface temperature (SST) warming, extra land surface warming and differential SST warming, we demonstrate that the weakening of the Walker circulation is attributed to the western North Pacific (WNP) monsoon and South America land effects. The effect of the uniform SST warming is through so-called “richest-get-richer” mechanism. In response to a uniform surface warming, the WNP monsoon is enhanced by competing moisture with other large-scale convective branches. The strengthened WNP monsoon further induces surface westerlies in the equatorial western-central Pacific, weakening the Walker circulation. The increase of the greenhouse gases leads to a larger land surface warming than ocean surface. As a result, a greater thermal contrast occurs between American Continent and equatorial Pacific. The so-induced zonal pressure gradient anomaly forces low-level westerly anomalies over the equatorial eastern Pacific and weakens the Walker circulation. The differential SST warming also plays a role in driving low-level westerly anomalies over tropical Pacific. But such an effect involves a positive air-sea feedback that amplifies the weakening of both east–west SST gradient and Pacific trade winds. © 2016, Springer-Verlag Berlin Heidelberg.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53347
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: IPRC and Department of Atmospheric Sciences, University of Hawaii, 2525 Correa Rd, Honolulu, HI, United States; International Laboratory on Climate and Environment Change and Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China

Recommended Citation:
Zhang L.,Li T.. Relative roles of differential SST warming, uniform SST warming and land surface warming in determining the Walker circulation changes under global warming[J]. Climate Dynamics,2017-01-01,48(2017-03-04)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhang L.]'s Articles
[Li T.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Zhang L.]'s Articles
[Li T.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhang L.]‘s Articles
[Li T.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.