气候变化领域集成服务门户(CCPortal): Response of the anomalous western North Pacific anticyclone during El Niño mature winter to global warming

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DOI	10.1007/s00382-019-05024-4
	Response of the anomalous western North Pacific anticyclone during El Niño mature winter to global warming
	Wang Y.; He C.; Li T.
发表日期	2020
ISSN	0930-7575
起始页码	727
结束页码	740
卷号	54 期号:2020-01-02
英文摘要	The western North Pacific subtropical anticyclone (WNPAC) usually fully develops during El Niño mature winter, and it is a key system connecting East Asian climate to ENSO. Based on a comparison between the RCP8.5 and the historical experiment of 30 coupled models from the CMIP5, we find that the response of the intensity in the anomalous WNPAC during El Niño mature winter remains almost unchanged under global warming. Taken the anomalous WNPAC as a two-step response to the diabatic heating anomaly over the equatorial central-eastern Pacific, numerical experiments based on GFDL_dry model and diagnoses are performed to explore the underlying mechanisms. The results demonstrate that the competition between the enhanced diabatic heating anomaly over the equatorial central-eastern Pacific and the enhanced mean state static stability results in a weakly enhanced low-level northeasterly wind anomaly over the WNP. Under an enhanced negative meridional gradient of the mean state low-level specific humidity, the negative moist enthalpy advection anomaly is enhanced over the WNP, which favors the enhanced negative precipitation anomaly. The negative precipitation anomaly over the WNP is thus enhanced due to atmospheric internal processes rather than the changed local SST anomaly. Finally, the competition between the enhanced local diabatic heating anomaly over the WNP and the enhanced mean state static stability results in an almost unchanged anomalous WNPAC. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Diabatic heating anomaly; El Niño; Global warming; Mean state static stability; Moist enthalpy advection; Western North Pacific anticyclone
语种	英语
scopus关键词	advection; anticyclone; diabatic process; El Nino; El Nino-Southern Oscillation; enthalpy; global warming; heating; regional climate; winter; Far East; Pacific Ocean; Pacific Ocean (Equatorial); Pacific Ocean (North)
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/145741
作者单位	Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environmental Change (ILCEC)/Collaborative Innovation Center on Forecast of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science and Technology, Nanjing, China; Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; International Pacific Research Center and Department of Atmospheric Sciences, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI, United States
推荐引用方式 GB/T 7714	Wang Y.,He C.,Li T.. Response of the anomalous western North Pacific anticyclone during El Niño mature winter to global warming[J],2020,54(2020-01-02).
APA	Wang Y.,He C.,&Li T..(2020).Response of the anomalous western North Pacific anticyclone during El Niño mature winter to global warming.Climate Dynamics,54(2020-01-02).
MLA	Wang Y.,et al."Response of the anomalous western North Pacific anticyclone during El Niño mature winter to global warming".Climate Dynamics 54.2020-01-02(2020).