气候变化领域集成服务门户(CCPortal): Step Increase in Eastern U.S. Precipitation Linked to Indian Ocean Warming

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DOI	10.1029/2020GL088911
	Step Increase in Eastern U.S. Precipitation Linked to Indian Ocean Warming
	Strong C.; McCabe G.J.; Weech A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	A step increase in annual precipitation over the eastern United States in the early 1970s commenced five decades of invigorated hydroclimate, with ongoing impacts on streamflow and water resources. Despite its far-reaching impacts, the dynamical origin of this change is unknown. Here analyses of a century of atmospheric and oceanic data trace the dynamics to changes in the Indian Ocean. Increases in fall precipitation contribute most strongly to the step increase, and the associated mechanism is emergence of a pan-Pacific atmospheric wave emanating from deep convection over the warming Indian Ocean. Documentation of this fall teleconnection draws attention to projected anthropogenic increases in tropical oceanic heat content and their potential impacts on hydroclimate of the midlatitudes. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Earth sciences; Geophysics; Annual precipitation; Associated mechanism; Atmospheric waves; Deep convection; Midlatitudes; Oceanic heat contents; Potential impacts; Teleconnections; Water resources; anthropogenic effect; atmospheric wave; climate modeling; midlatitude environment; precipitation (climatology); streamflow; teleconnection; Indian Ocean; United States
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/169798
作者单位	Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT, United States; U.S. Geological Survey, Water Mission Area, Integrated Modeling and Prediction Division, Denver Federal Center, Denver, CO, United States
推荐引用方式 GB/T 7714	Strong C.,McCabe G.J.,Weech A.. Step Increase in Eastern U.S. Precipitation Linked to Indian Ocean Warming[J],2020,47(17).
APA	Strong C.,McCabe G.J.,&Weech A..(2020).Step Increase in Eastern U.S. Precipitation Linked to Indian Ocean Warming.Geophysical Research Letters,47(17).
MLA	Strong C.,et al."Step Increase in Eastern U.S. Precipitation Linked to Indian Ocean Warming".Geophysical Research Letters 47.17(2020).