气候变化领域集成服务门户(CCPortal): Variations in atmospheric perturbation potential energy associated with the South China Sea summer monsoon

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DOI	10.1007/s00382-019-04845-7
	Variations in atmospheric perturbation potential energy associated with the South China Sea summer monsoon
	Zhang Y.; Li J.; Wang Q.; Xue J.
发表日期	2019
ISSN	0930-7575
起始页码	2295
结束页码	2308
卷号	53 期号:2020-03-04
英文摘要	This study investigates the energy conversion processes and their relation to convection (circulation) during the South China Sea summer monsoon (SCSSM) years from the viewpoint of atmospheric perturbation potential energy (PPE). An atmospheric PPE dipole pattern associated with the SCSSM develops over the western North Pacific (WNP) and southern Maritime Continent (SMC) in the boreal summer, serving as a link between the SCSSM and diabatic heating. Actually, the conversion between the energy variations and the convection over the WNP is distinctly different with that over the SMC. The precipitation leads the PPE over the WNP, while similar situation is reversed over the SMC. During strong SCSSM years, the higher PPE over the WNP, controlled primarily by the latent heat released from condensation related to surplus precipitation, is corresponding to the negative energy conversion (C k) over there. This indicates that more PPE is converted to perturbation kinetic energy and further intensifying ascending motion over the WNP. Consequently, the descending movement reduces the PPE and is corresponding to positive C k over the SMC, suggesting that the less PPE converts into the perturbation kinetic energy and in turn favors the descending movement and deficit precipitation there. The enhanced southwesterly induced by this SCSSM Hadley circulation, superimposed on the mean southwesterly wind, further favors the intensification of the SCSSM, implying that the SCSSM can maintain development through the positive convection–PPE–circulation feedback. © 2019, The Author(s).
英文关键词	Atmospheric perturbation potential energy (PPE); Energy conversion; Perturbation kinetic energy; Positive circulation–PPE–convection feedback; South China Sea summer monsoon
语种	英语
scopus关键词	atmospheric convection; climate feedback; Hadley cell; Indian Ocean Dipole; monsoon; perturbation; potential energy; Pacific Ocean; South China Sea
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/146098
作者单位	College of Global Change and Earth System Science (GCESS), Beijing Normal University, Beijing, 100875, China; Key Laboratory of Physical Oceanography, Institute for Advanced Ocean Studies, Qingdao National Laboratory for Marine Science and Technology, Ocean University of China, Qingdao, 266100, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; College of Earth Science, University of Chinese Academy of Sciences, Beijing, 100029, China
推荐引用方式 GB/T 7714	Zhang Y.,Li J.,Wang Q.,et al. Variations in atmospheric perturbation potential energy associated with the South China Sea summer monsoon[J],2019,53(2020-03-04).
APA	Zhang Y.,Li J.,Wang Q.,&Xue J..(2019).Variations in atmospheric perturbation potential energy associated with the South China Sea summer monsoon.Climate Dynamics,53(2020-03-04).
MLA	Zhang Y.,et al."Variations in atmospheric perturbation potential energy associated with the South China Sea summer monsoon".Climate Dynamics 53.2020-03-04(2019).