DOI: 10.1002/joc.5293
论文题名: Impact of summer monsoon on the elevation-dependence of meteorological variables in the south of central Himalaya
作者: Yang K. ; Guyennon N. ; Ouyang L. ; Tian L. ; Tartari G. ; Salerno F.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 4 起始页码: 1748
结束页码: 1759
语种: 英语
英文关键词: cloud–radiation interaction
; elevation dependence
; seasonal variation
; summer monsoon
; temperature and humidity lapse rate
Scopus关键词: Radiation effects
; Radiation shielding
; Sea level
; Solar radiation
; Cloud-radiation interactions
; Elevation dependence
; Lapse rate
; Seasonal variation
; Summer monsoon
; Atmospheric thermodynamics
; boundary layer
; climate effect
; cloud radiative forcing
; elevation
; glacial hydrology
; humidity
; latent heat flux
; longwave radiation
; monsoon
; seasonal variation
; summer
; temperature effect
; terrain
; Himalayas
; Khumbu Himal
; Mount Everest
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. © 2017 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117066
Appears in Collections: 气候减缓与适应
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作者单位: Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; National Research Council, Water Research Institute (IRSA-CNR), Rome, Italy; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; National Research Council, Water Research Institute (IRSA-CNR), Brugherio, Italy
Recommended Citation:
Yang K.,Guyennon N.,Ouyang L.,et al. Impact of summer monsoon on the elevation-dependence of meteorological variables in the south of central Himalaya[J]. International Journal of Climatology,2018-01-01,38(4)