气候变化领域集成服务门户(CCPortal): Poleward Excursions by the Himalayan Subtropical Jet Over the Past Four Centuries

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DOI	10.1029/2020GL089631
	Poleward Excursions by the Himalayan Subtropical Jet Over the Past Four Centuries
	Thapa U.K.; St. George S.; Trouet V.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Since the 1980s, the subtropical jet stream has generally moved poleward, but its behavior varies by region and season. Here we examine the interannual variability and trends in the latitudinal position of the spring subtropical jet over the Himalayas. During the modern period (1948 to 2018), the spring (March-April-May) jet is typically anchored immediately south of the Himalayas but has rarely (in 1956, 1971, 1984, and 1999) moved poleward to pass over Kyrgyzstan and northwest China. A tree-ring reconstruction of the jet's latitude indicates that such poleward excursions may have become more frequent after 1950, but it is not clear whether that behavior is unprecedented within the past four centuries. These insights into the behavior of the Himalayan subtropical jet may improve seasonal weather forecasts for the region and provide a target for climate simulations to test whether the recent spate of excursions is unusual and due to anthropogenic warming. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Tropics; Anthropogenic warming; Climate simulation; Himalayas; Interannual variability; Kyrgyzstan; NorthWest China; Subtropical jet; Tree-ring reconstruction; Weather forecasting; anthropogenic effect; dendroecology; jet stream; latitude; proxy climate record; reconstruction; seasonality; subtropical region; tree ring; Himalayas; Kyrgyzstan
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/169452
作者单位	Department of Geography, Environment and Society, University of Minnesota, Minneapolis, MN, United States; University Corporation for Atmospheric Research (UCAR), Boulder, CO, United States; Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, United States; Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ, United States
推荐引用方式 GB/T 7714	Thapa U.K.,St. George S.,Trouet V.. Poleward Excursions by the Himalayan Subtropical Jet Over the Past Four Centuries[J],2020,47(22).
APA	Thapa U.K.,St. George S.,&Trouet V..(2020).Poleward Excursions by the Himalayan Subtropical Jet Over the Past Four Centuries.Geophysical Research Letters,47(22).
MLA	Thapa U.K.,et al."Poleward Excursions by the Himalayan Subtropical Jet Over the Past Four Centuries".Geophysical Research Letters 47.22(2020).