气候变化领域集成服务门户(CCPortal): Responses of global monsoon and seasonal cycle of precipitation to precession and obliquity forcing

CCPortal

DOI	10.1007/s00382-021-05663-6
	Responses of global monsoon and seasonal cycle of precipitation to precession and obliquity forcing
	Ding Z.; Huang G.; Liu F.; Wu R.; Wang P.
发表日期	2021
ISSN	0930-7575
起始页码	1131
结束页码	1144
卷号	56 期号:2021-11-12
英文摘要	In this paper, the response of global monsoon to changes in orbital forcing is investigated using a coupled atmosphere–ocean general circulation model with an emphasis on relative roles of precession and obliquity changes. When precession decreases, there are inter-hemispheric asymmetric responses in monsoonal precipitation, featuring a significant increase over most parts of the Northern Hemisphere (NH) monsoon regions and a decrease over the Southern Hemisphere (SH) monsoon regions. In contrast, when obliquity increases, global monsoon is enhanced except for the American monsoon. Dynamic effects (caused by changes in winds with humidity unchanged) dominate the monsoonal precipitation response to both precession and obliquity forcing, while thermodynamic effects (caused by changes in humidity with winds unchanged) is related to the northward extension of the North African summer monsoon. During minimum precession, the seasonal cycle of tropical precipitation is advanced with respect to the maximum precession. The rainfall increase in the transitional season (April-June in the NH and October-December in the SH) is dominated by the dynamic component. From an energetics perspective, the southward (northward) cross-equatorial energy transport during April-June (October-December) corresponds to a northward (southward) shift of tropical precipitation, which results in a seasonal advance in the migration of tropical precipitation. Nonetheless, there is no significant change in the seasonal cycle in response to obliquity forcing. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
英文关键词	Global monsoon; Obliquity; Precession; Seasonal cycle
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183265
作者单位	State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, 40 Hua Yan Li, Beijing, 100029, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China; School of Atmospheric Sciences, Sun Yat-Sen University, Zhuhai, China; School of Earth Sciences, Zhejiang University, Hangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, China
推荐引用方式 GB/T 7714	Ding Z.,Huang G.,Liu F.,et al. Responses of global monsoon and seasonal cycle of precipitation to precession and obliquity forcing[J],2021,56(2021-11-12).
APA	Ding Z.,Huang G.,Liu F.,Wu R.,&Wang P..(2021).Responses of global monsoon and seasonal cycle of precipitation to precession and obliquity forcing.Climate Dynamics,56(2021-11-12).
MLA	Ding Z.,et al."Responses of global monsoon and seasonal cycle of precipitation to precession and obliquity forcing".Climate Dynamics 56.2021-11-12(2021).