气候变化领域集成服务门户(CCPortal): Seasonal evolution of the intraseasonal variability of China summer precipitation

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DOI	10.1007/s00382-020-05251-0
	Seasonal evolution of the intraseasonal variability of China summer precipitation
	Liu F.; Ouyang Y.; Wang B.; Yang J.; Ling J.; Hsu P.-C.
发表日期	2020
ISSN	0930-7575
起始页码	4641
结束页码	4655
卷号	54
英文摘要	Seasonal cycle of China summer precipitation has significant impacts on its subseasonal predictability; yet current understanding of seasonal evolution of the intraseasonal variability (ISV) remains limited. Here, we show that the ISV of China summer precipitation features a distinct three-stage evolution during early summer, Meiyu season, and late summer. There are two common leading ISV modes: a uniform mode (UM) over southeastern China and a dipole mode (DM) between coastal southeastern China and mid-lower reaches of the Yangtze River Basin, which occur during all three stages with a dominant period of 8–15 days in the early and late summers and 8–25 days during Meiyu season. These two modes show southward propagation in early summer, but they are independent from each other in the other two stages. In early summer, both UM and DM are only related to mid-latitude wave train, and no preceding signal is found in the tropics due to the weak western North Pacific (WNP) monsoon trough. In contrast, during the Meiyu season and late summer, preceding tropical signals are observed when the WNP monsoon trough becomes strong. In the late summer, the effect of mid-latitude wave train is weak as the westerly jet-induced wave guide is far away from southeastern China. An improved subseasonal prediction system is expected to be benefited from consideration of the seasonal evolution of China summer precipitation ISV. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	China summer precipitation; Intraseasonal variability; Meiyu season; Seasonal evolution
语种	英语
scopus关键词	climate modeling; jet flow; monsoon; precipitation (climatology); regional climate; seasonal variation; summer; wave modeling; China
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/145457
作者单位	School of Atmospheric Sciences, and Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Zhuhai, 519082, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China; Earth System Modeling and Climate Dynamics Research Center, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Department of Atmospheric Sciences and International Pacific Research Center, University of Hawaii at Manoa, Honolulu, HI 96822, United States; State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, 100875, China; Institute of Atmospheric Sciences, Chinese Academy of Sciences, Beijing, 10029, China
推荐引用方式 GB/T 7714	Liu F.,Ouyang Y.,Wang B.,et al. Seasonal evolution of the intraseasonal variability of China summer precipitation[J],2020,54.
APA	Liu F.,Ouyang Y.,Wang B.,Yang J.,Ling J.,&Hsu P.-C..(2020).Seasonal evolution of the intraseasonal variability of China summer precipitation.Climate Dynamics,54.
MLA	Liu F.,et al."Seasonal evolution of the intraseasonal variability of China summer precipitation".Climate Dynamics 54(2020).