气候变化领域集成服务门户(CCPortal): Contribution of anthropogenic aerosols to persistent La Niña-like conditions in the early 21st century

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DOI	10.1073/pnas.2315124121
	Contribution of anthropogenic aerosols to persistent La Niña-like conditions in the early 21st century
	Hwanga, Yen - Ting; Xieb, Shang Ping; Chena, Po-Ju; Tsenga, Hung-Yi; Deserd, Clara
发表日期	2024
ISSN	0027-8424
EISSN	1091-6490
起始页码	121
结束页码	5
卷号	121 期号:5
英文摘要	The discrepancy between the observed lack of surface warming in the eastern equatorial Pacific and climate model projections of an El Nino- like warming pattern confronts the climate research community. While anthropogenic aerosols have been suggested as a cause, the prolonged cooling trend over the equatorial Pacific appears in conflict with Northern Hemisphere aerosol emission reduction since the 1980s. Here, using CESM, we show that the superposition of fast and slow responses to aerosol emission change-an increase followed by a decrease-can sustain the La Nina- like condition for a longer time than expected. The rapid adjustment of Hadley Cell to aerosol reduction triggers joint feedback between low clouds, wind, evaporation, and sea surface temperature in the Southeast Pacific, leading to a wedge- shaped cooling that extends to the central equatorial Pacific. Meanwhile, the northern subtropical cell gradually intensifies, resulting in equatorial subsurface cooling that lasts for decades.
英文关键词	climate change; atmosphere-ocean interaction; climate teleconnection; sea surface temperature pattern
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001167412600009
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/292514
作者单位	National Taiwan University; University of California System; University of California San Diego; Scripps Institution of Oceanography; George Mason University; National Center Atmospheric Research (NCAR) - USA
推荐引用方式 GB/T 7714	Hwanga, Yen - Ting,Xieb, Shang Ping,Chena, Po-Ju,et al. Contribution of anthropogenic aerosols to persistent La Niña-like conditions in the early 21st century[J],2024,121(5).
APA	Hwanga, Yen - Ting,Xieb, Shang Ping,Chena, Po-Ju,Tsenga, Hung-Yi,&Deserd, Clara.(2024).Contribution of anthropogenic aerosols to persistent La Niña-like conditions in the early 21st century.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(5).
MLA	Hwanga, Yen - Ting,et al."Contribution of anthropogenic aerosols to persistent La Niña-like conditions in the early 21st century".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.5(2024).