气候变化领域集成服务门户(CCPortal): Precipitation over Indochina during the monsoon transition: modulation by Indian Ocean and ENSO regimes

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DOI	10.1007/s00382-021-05817-6
	Precipitation over Indochina during the monsoon transition: modulation by Indian Ocean and ENSO regimes
	Ge F.; Zhu S.; Sielmann F.; Fraedrich K.; Zhu X.; Zhang L.; Zhi X.; Wang H.
发表日期	2021
ISSN	0930-7575
英文摘要	The interannual variability of precipitation during the summer monsoon transition over the Indochina Peninsula (ICP) is substantially influenced by the sea surface temperature anomalies (SSTAs) of the tropical ocean, showing a robust relationship between April and May (AM) precipitation and the El Niño/Southern Oscillation (ENSO) phenomenon. Dynamic composites and statistical analyses supported by model experiments indicate that the observed anomalous AM precipitation is associated with circulation anomalies over the Pacific and, in addition, affected by the response to the tropical SSTAs forcing from the Indian Ocean (IO): (i) Less (greater) than normal AM precipitation over the ICP occurs during the El Niño (La Niña) years, which is consistent with late (early) Bay of Bengal (BoB) summer monsoon onset. (ii) The dry (wet) AM precipitation years are associated with the anomalous western North Pacific (WNP) anti-cyclone (cyclone) induced by El Niño (La Niña) concurrent with the anti-cyclone (cyclone) over the BoB, suppressing (favoring) the meridional flow of warm and moist air from the Pacific and Indian ocean and thus cutting (providing) moisture supply for the ICP. (iii) The reduced tropical convective activity over Maritime Continent (MC) is related to the weakened local Hadley circulation concurrent with the weakened overturning Walker circulation, and favors a drier than normal AM precipitation over the ICP, to which the wetter years are opposite. These symmetric atmospheric circulation patterns characterizing dry and wet AM precipitation over the ICP are also reproduced by numerical experiments with an atmospheric general circulation model. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	ENSO; Indochina Peninsula; Monsoon transition; Precipitation
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/183418
作者单位	School of Atmospheric Sciences/Plateau Atmosphere and Environment Key Laboratory of Sichuan Province/Joint Laboratory of Climate and Environment Change, Chengdu University of Information Technology, Chengdu, China; Nanjing Joint Institute for Atmospheric Sciences, Chinese Academy of Meteorological Sciences, Nanjing, China; Key Laboratory of Meteorological Disaster, Ministry of Education/Collaborative Innovation Center On Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, China; Max Planck Institute for Meteorology, Hamburg, Germany; Meteorological Institute, University of Hamburg, Hamburg, Germany; College of Atmospheric Sounding, Chengdu University of Information Technology, Chengdu, China
推荐引用方式 GB/T 7714	Ge F.,Zhu S.,Sielmann F.,et al. Precipitation over Indochina during the monsoon transition: modulation by Indian Ocean and ENSO regimes[J],2021.
APA	Ge F..,Zhu S..,Sielmann F..,Fraedrich K..,Zhu X..,...&Wang H..(2021).Precipitation over Indochina during the monsoon transition: modulation by Indian Ocean and ENSO regimes.Climate Dynamics.
MLA	Ge F.,et al."Precipitation over Indochina during the monsoon transition: modulation by Indian Ocean and ENSO regimes".Climate Dynamics (2021).