Mechanism of Daytime Strong Winds on the Northern Slopes of Himalayas, near Mount Everest: Observation and Simulation

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, FL (Sun, Fanglin)1; Ma, YM (Ma, Yaoming)2,3; Hu, ZY (Hu, Zeyong)1; Li, MS (Li, Maoshan)4; Tartari, G (Tartari, Gianni)5; Salerno, F (Salerno, Franco)5; Gerken, T (Gerken, Tobias)6; Bonasoni, P (Bonasoni, Paolo)7; Cristofanelli, P (Cristofanelli, Paolo)7; Vuillermoz, E (Vuillermoz, Elisa)8
刊名	JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
	2018-02-01
卷号	57 期号:2 页码:255-272
关键词	KALI GANDAKI VALLEY PART II DIURNAL WINDS MONSOON PRECIPITATION TEMPERATURE SEASONALITY MODEL ONSET NEPAL
ISSN号	1558-8424
DOI	10.1175/JAMC-D-16-0409.1
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.
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER METEOROLOGICAL SOC
WOS记录号	WOS:000427362400004
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8731]
专题	青藏高原研究所_图书馆
作者单位	1.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Gansu, Peoples R China; 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China; 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; 4.Chengdu Univ Informat Technol, Sch Atmospher Sci, Chengdu, Sichuan, Peoples R China; 5.CNR, Water Res Inst, Brugherio, Italy; 6.Montana State Univ, Dept Land Resources & Environm Sci, Bozeman, MT 59717 USA; 7.CNR, Inst Atmospher & Climate Sci, Bologna, Italy; 8.Ev K2 CNR Comm, Bergamo, Italy.
推荐引用方式 GB/T 7714	Sun, FL ,Ma, YM ,Hu, ZY ,et al. Mechanism of Daytime Strong Winds on the Northern Slopes of Himalayas, near Mount Everest: Observation and Simulation[J]. JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY,2018,57(2):255-272.
APA	Sun, FL .,Ma, YM .,Hu, ZY .,Li, MS .,Tartari, G .,...&Vuillermoz, E .(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),255-272.
MLA	Sun, FL ,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):255-272.