气候变化领域集成服务门户(CCPortal): Ocean fronts and eddies force atmospheric rivers and heavy precipitation in western North America

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DOI	10.1038/s41467-021-21504-w
	Ocean fronts and eddies force atmospheric rivers and heavy precipitation in western North America
	Liu X.; Ma X.; Chang P.; Jia Y.; Fu D.; Xu G.; Wu L.; Saravanan R.; Patricola C.M.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Atmospheric rivers (ARs) are responsible for over 90% of poleward water vapor transport in the mid-latitudes and can produce extreme precipitation when making landfall. However, weather and climate models still have difficulty simulating and predicting landfalling ARs and associated extreme precipitation, highlighting the need to better understand AR dynamics. Here, using high-resolution climate models and observations, we demonstrate that mesoscale sea-surface temperature (SST) anomalies along the Kuroshio Extension can exert a remote influence on landfalling ARs and related heavy precipitation along the west coast of North America. Inclusion of mesoscale SST forcing in the simulations results in approximately a 40% increase in landfalling ARs and up to a 30% increase in heavy precipitation in mountainous regions and this remote impact occurs on two-week time scales. The asymmetrical response of the atmosphere to warm vs. cold mesoscale SSTs over the eddy-rich Kuroshio Extension region is proposed as a forcing mechanism that results in a net increase of moisture flux above the planetary boundary layer, prompting AR genesis via enhancing moisture transport into extratropical cyclones in the presence of mesoscale SST forcing. © 2021, The Author(s).
语种	英语
scopus关键词	air-sea interaction; boundary layer; climate modeling; extratropical cyclone; midlatitude environment; mountain region; oceanic front; precipitation (climatology); sea surface temperature; temperature anomaly; article; boundary layer; climate; cold stress; hurricane; moisture; North America; precipitation; river; sea surface temperature; seashore; simulation; Kuroshio Extension; North America; Pacific Ocean
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251502
作者单位	International Laboratory for High-Resolution Earth System Prediction, Texas A&M University, College Station, TX, United States; Department of Oceanography, Texas A&M University, College Station, TX, United States; Key Laboratory of Physical Oceanography and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China; Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao, China; Department of Atmospheric Sciences, Texas A&M University, College Station, TX, United States; College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA, United States
推荐引用方式 GB/T 7714	Liu X.,Ma X.,Chang P.,et al. Ocean fronts and eddies force atmospheric rivers and heavy precipitation in western North America[J],2021,12(1).
APA	Liu X..,Ma X..,Chang P..,Jia Y..,Fu D..,...&Patricola C.M..(2021).Ocean fronts and eddies force atmospheric rivers and heavy precipitation in western North America.Nature Communications,12(1).
MLA	Liu X.,et al."Ocean fronts and eddies force atmospheric rivers and heavy precipitation in western North America".Nature Communications 12.1(2021).