气候变化领域集成服务门户(CCPortal): The Seesaw of Seasonal Precipitation Variability Between North China and the Southwest United States: A Response to Arctic Amplification

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DOI	10.1029/2020JD034039
	The Seesaw of Seasonal Precipitation Variability Between North China and the Southwest United States: A Response to Arctic Amplification
	Dai H.; Zhao J.; Yao Q.; Zhang X.
发表日期	2021
ISSN	2169897X
卷号	126 期号:9
英文摘要	Surface albedo over the ice-covered polar ocean is decreased in a highly idealized numerical experiment, which leads to stronger (weaker) warming at high (low) latitudes, and forms Arctic amplification. With stronger warming at both high and low latitudes, the meridional temperature gradient decreases (increases) at midlatitudes (subtropical regions). A cyclonic wind anomaly appears and results in a weak Kuroshio current and warm interdecadal Pacific Oscillation phase. In response to Arctic-amplified-warming, the subtropical high weakens, leading to summer monsoon anomaly on its southside and increased westward transport of water vapor, resulting in a seesaw pattern: dry (wet) conditions in summer in North China (southwest United States, SWUS). In winter, the East Asian trough (North American high) decreases and induces decreased (increased) cold air transport to North China (SWUS) in response to Arctic-amplified-warming, which makes rain unlikely (likely) and exhibits a seesaw pattern. Moisture convergence always appears in a warmer SWUS winter, and increases precipitation there, which strengthens (counteracts) the precipitation anomaly led by the North American high in a warm (cold) interdecadal Pacific Oscillation phase. It may even shut down the seesaw pattern in winter in the cold interdecadal Pacific Oscillation phase. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Arctic amplification; seesaw of seasonal precipitation variability; surface albedo
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185252
作者单位	Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao, Shandong, China; College of Meteorology and Oceanography, National University of Defense Technology, Changsha, Hunan, China
推荐引用方式 GB/T 7714	Dai H.,Zhao J.,Yao Q.,et al. The Seesaw of Seasonal Precipitation Variability Between North China and the Southwest United States: A Response to Arctic Amplification[J],2021,126(9).
APA	Dai H.,Zhao J.,Yao Q.,&Zhang X..(2021).The Seesaw of Seasonal Precipitation Variability Between North China and the Southwest United States: A Response to Arctic Amplification.Journal of Geophysical Research: Atmospheres,126(9).
MLA	Dai H.,et al."The Seesaw of Seasonal Precipitation Variability Between North China and the Southwest United States: A Response to Arctic Amplification".Journal of Geophysical Research: Atmospheres 126.9(2021).