气候变化领域集成服务门户(CCPortal): Possible Modulation of the Interannual ENSO-East Asian Winter Monsoon Relationship by the North American Ice Sheets During the Last 21 ka

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DOI	10.1029/2020GL089572
	Possible Modulation of the Interannual ENSO-East Asian Winter Monsoon Relationship by the North American Ice Sheets During the Last 21 ka
	Shi J.; Yan Q.; Yang Y.; Zhou F.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Observations have demonstrated an unstable interannual relationship between El Niño/Southern Oscillation (ENSO) and the East Asian winter monsoon in recent decades due to internal variability. However, it remains unclear whether the interannual ENSO-East Asian winter monsoon relationship (EER) may change with long-term external forcings, especially when they vary substantially. The results of a set of transient simulations during the last 21,000 years demonstrate the EER is enhanced during the Last Glacial Maximum relative to the Holocene, characterized by a poleward migration of ENSO's signal over the northwest Pacific. The strengthened EER results from the weakened interannual ENSO-Aleutian Low teleconnection and the northeastward displacement of the climatological Aleutian Low, ultimately forced by the massive North American ice sheets at that time. Our study suggests a changing EER with various external forcings and implies potential uncertainty in applying the present-day ENSO teleconnections during glacials. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric thermodynamics; Glaciers; Aleutian low; East Asian winter monsoon; Interannual; Internal variability; Last Glacial Maximum; North American; Teleconnections; Transient simulation; Climatology; air-sea interaction; atmospheric forcing; climate signal; El Nino-Southern Oscillation; ice flow; Last Glacial Maximum; monsoon; teleconnection; Pacific Ocean; Pacific Ocean (Northwest)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169458
作者单位	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; Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, China; Climate Change Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Shi J.,Yan Q.,Yang Y.,et al. Possible Modulation of the Interannual ENSO-East Asian Winter Monsoon Relationship by the North American Ice Sheets During the Last 21 ka[J],2020,47(22).
APA	Shi J.,Yan Q.,Yang Y.,&Zhou F..(2020).Possible Modulation of the Interannual ENSO-East Asian Winter Monsoon Relationship by the North American Ice Sheets During the Last 21 ka.Geophysical Research Letters,47(22).
MLA	Shi J.,et al."Possible Modulation of the Interannual ENSO-East Asian Winter Monsoon Relationship by the North American Ice Sheets During the Last 21 ka".Geophysical Research Letters 47.22(2020).