气候变化领域集成服务门户(CCPortal): Intensification of El Niño-induced atmospheric anomalies under greenhouse warming

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DOI	10.1038/s41561-021-00730-3
	Intensification of El Niño-induced atmospheric anomalies under greenhouse warming
	Hu K.; Huang G.; Huang P.; Kosaka Y.; Xie S.-P.
发表日期	2021
ISSN	17520894
起始页码	377
结束页码	382
卷号	14 期号:6
英文摘要	The El Niño/Southern Oscillation (ENSO) has a profound influence on global climate and ecosystems. Determining how the ENSO responds to greenhouse warming is a crucial issue in climate science. Despite recent progress in understanding, the responses of important ENSO characteristics, such as air temperature and atmospheric circulation, are still unknown. Here, we use a suite of global climate model projections to show that greenhouse warming drives a robust intensification of ENSO-driven variability in boreal winter tropical upper tropospheric temperature and geopotential height, tropical humidity, subtropical jets and tropical Pacific rainfall. These robust changes are primarily due to the Clausius–Clapeyron relationship, whereby saturation vapour pressure increases nearly exponentially with increasing temperature. Therefore, the vapour response to temperature variability is larger under a warmer climate. As a result, under global warming, even if the ENSO’s sea surface temperature remains unchanged, the response of tropical lower tropospheric humidity to the ENSO amplifies, which in turn results in major reorganization of atmospheric temperature, circulation and rainfall. These findings provide a novel theoretical constraint for ENSO changes and reduce uncertainty in the ENSO response to greenhouse warming. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	air temperature; air-sea interaction; climate modeling; El Nino; El Nino-Southern Oscillation; geopotential; global climate; sea surface temperature; vapor pressure; Pacific Ocean; Pacific Ocean (Tropical)
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206911
作者单位	State key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan; Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States
推荐引用方式 GB/T 7714	Hu K.,Huang G.,Huang P.,et al. Intensification of El Niño-induced atmospheric anomalies under greenhouse warming[J],2021,14(6).
APA	Hu K.,Huang G.,Huang P.,Kosaka Y.,&Xie S.-P..(2021).Intensification of El Niño-induced atmospheric anomalies under greenhouse warming.Nature Geoscience,14(6).
MLA	Hu K.,et al."Intensification of El Niño-induced atmospheric anomalies under greenhouse warming".Nature Geoscience 14.6(2021).