气候变化领域集成服务门户(CCPortal): Impact of summer monsoon on the elevation-dependence of meteorological variables in the south of central Himalaya

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DOI	10.1002/joc.5293
	Impact of summer monsoon on the elevation-dependence of meteorological variables in the south of central Himalaya
	Yang, Kun; Guyennon, Nicolas; Ouyang, Lin; Tian, Lide; Tartari, Gianni; Salerno, Franco
通讯作者	Yang, K (通讯作者)
发表日期	2018
ISSN	0899-8418
EISSN	1097-0088
起始页码	1748
结束页码	1759
卷号	38 期号:4
英文摘要	The South Asian summer monsoon brings abundant precipitation and associated latent heat release to the south of central Himalaya, and alters hydrothermal conditions of this region. This study explored the impact of South Asian summer monsoon on the elevation-dependence of meteorological variables along the south slope of Mt. Everest in the central Himalaya, which is crucial to modelling the glacio-hydrological processes in this elevated region. The data were collected at five stations deployed at 2660-5600 m above sea level (asl) along the slope during 2007-2011. Major findings are the following: (1) The amount of precipitation during the monsoon season usually decreases with elevation but it is relatively uniform between 3600 and 5000 m asl. This uniform profile may be attributed to the monsoon-terrain-land interactions, particularly to the retard effect of glacier cooling on daytime upvalley wind; (2) Cloud shielding effects cause lower solar radiation and higher downward longwave radiation in the monsoon than in the other seasons. In particular, higher elevations have more clouds in the afternoon, resulting in an abnormal elevation-dependence of solar radiation (i.e. higher elevations receive less solar radiation); (3) Strong daytime upvalley wind and moist convection homogenizes the vertical distributions of air mass along the slope, causing a constant lapse rate of both surface air temperature and dew-point temperature (representing humidity) during typical monsoon months, but this phenomenon is not found in the other seasons. These findings provide critical guidance for extrapolating the meteorological variables from lower to higher elevations in this region.
关键词	SAGARMATHA NATIONAL-PARK SPATIAL-PATTERNS TIBETAN PLATEAU PRECIPITATION NEPAL TEMPERATURE GLACIERS BALANCE RAINFALL PROJECT
英文关键词	elevation dependence; seasonal variation; temperature and humidity lapse rate; cloud-radiation interaction; summer monsoon
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000427011700011
来源期刊	INTERNATIONAL JOURNAL OF 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/259301
推荐引用方式 GB/T 7714	Yang, Kun,Guyennon, Nicolas,Ouyang, Lin,et al. Impact of summer monsoon on the elevation-dependence of meteorological variables in the south of central Himalaya[J]. 中国科学院青藏高原研究所,2018,38(4).
APA	Yang, Kun,Guyennon, Nicolas,Ouyang, Lin,Tian, Lide,Tartari, Gianni,&Salerno, Franco.(2018).Impact of summer monsoon on the elevation-dependence of meteorological variables in the south of central Himalaya.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(4).
MLA	Yang, Kun,et al."Impact of summer monsoon on the elevation-dependence of meteorological variables in the south of central Himalaya".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.4(2018).