气候变化领域集成服务门户(CCPortal): Mechanism of Daytime Strong Winds on the Northern Slopes of Himalayas, near Mount Everest: Observation and Simulation

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DOI	10.1175/JAMC-D-16-0409.1
	Mechanism of Daytime Strong Winds on the Northern Slopes of Himalayas, near Mount Everest: Observation and Simulation
	Sun, Fanglin; Ma, Yaoming; Hu, Zeyong; Li, Maoshan; Tartari, Gianni; Salerno, Franco; Gerken, Tobias; Bonasoni, Paolo; Cristofanelli, Paolo; Vuillermoz, Elisa
通讯作者	Sun, FL (通讯作者)
发表日期	2018
ISSN	1558-8424
EISSN	1558-8432
起始页码	255
结束页码	272
卷号	57 期号:2
英文摘要	The seasonal variability of strong afternoon winds in a northern Himalayan valley and their relationship with the synoptic circulation were examined using in situ meteorological data from March 2006 to February 2007 and numerical simulations. Meteorological observations were focused on the lower Rongbuk valley, on the north side of the Himalayas (4270m MSL), where a wind profile radar was available. In the monsoon season (21 May-4 October), the strong afternoon wind was southeasterly, whereas it was southwesterly in the nonmonsoon season. Numerical simulations were performed using the Weather Research and Forecasting Model to investigate the mechanism causing these afternoon strong winds. The study found that during the nonmonsoon season the strong winds are produced by downward momentum transport from the westerly winds aloft, whereas those during the monsoon season are driven by the inflow into the Arun Valley east of Mount Everest. The air in the Arun Valley was found to be colder than that of the surroundings during the daytime, and there was a horizontal pressure gradient from the Arun Valley to Qomolangma Station (QOMS), China Academy of Sciences, at the 5200-m level. This explains the formation of the strong afternoon southeasterly wind over QOMS in the monsoon season. In the nonmonsoon season, the colder air from Arun Valley is confined below the ridge by westerly winds associated with the subtropical jet.
关键词	KALI GANDAKI VALLEY PART II DIURNAL WINDS MONSOON PRECIPITATION TEMPERATURE SEASONALITY MODEL ONSET NEPAL
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000427362400004
来源期刊	JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259331
推荐引用方式 GB/T 7714	Sun, Fanglin,Ma, Yaoming,Hu, Zeyong,et al. Mechanism of Daytime Strong Winds on the Northern Slopes of Himalayas, near Mount Everest: Observation and Simulation[J]. 中国科学院青藏高原研究所,2018,57(2).
APA	Sun, Fanglin.,Ma, Yaoming.,Hu, Zeyong.,Li, Maoshan.,Tartari, Gianni.,...&Vuillermoz, Elisa.(2018).Mechanism of Daytime Strong Winds on the Northern Slopes of Himalayas, near Mount Everest: Observation and Simulation.JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY,57(2).
MLA	Sun, Fanglin,et al."Mechanism of Daytime Strong Winds on the Northern Slopes of Himalayas, near Mount Everest: Observation and Simulation".JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY 57.2(2018).