DOI: 10.1175/JCLI-D-14-00835.1
Scopus记录号: 2-s2.0-84974782367
论文题名: Meteorological regimes of the most intense convective systems along the southern Himalayan front
作者: Wu X. ; Qie X. ; Yuan T. ; Li J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 12 起始页码: 4383
结束页码: 4398
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Climatology
; Cluster analysis
; Potential energy
; Principal component analysis
; Rain
; Rain gages
; Storms
; Climate classification/regimes
; Convective storms
; Extreme events
; Meso-scale systems
; Storm environments
; Intelligent control
; air-sea interaction
; atmosphere-ocean system
; atmospheric convection
; extreme event
; mesoscale meteorology
; monsoon
; storm
; TRMM
; Arabian Sea
; Bay of Bengal
; Himalayas
; Indian Ocean
英文摘要: Based on 16 years of Tropical Rainfall Measuring Mission (TRMM) data and NCEP Climate Forecast System Reanalysis data, the most intense convective systems (ICSs) along the southern Himalayan front (SHF) are studied using the multivariate techniques of principal component analysis in T mode and k-means cluster analysis. Three clusters, classified according to the near-surface fields of wind, specific humidity, convective available potential energy, and convective inhibition, correspond to the premonsoon (March-May), the establishment of the monsoon (late May-early June), and the Indian summer monsoon itself (June-September), respectively. The location of ICSs along the SHF is closely related to the establishment of the transport passage from the eastern SHF to the northwestern SHF along the Himalayas. During the premonsoon, the southwesterly wind is weak and moist air from the Bay of Bengal is transported to the eastern SHF, where ICSs are densely distributed. The oceanic southwesterly wind is enhanced and the transport passage extends to the central SHF during the monsoon establishment period, when ICSs distribute over the whole SHF homogeneously. The southwesterly wind is the strongest and the transport passage extends to the westernmost SHF after the monsoon is established, when ICSs mainly concentrate over the concave indentation region. Backward trajectory analysis confirms that, besides the local environment, the moisture transport from the Arabian Sea (17%) and the Bay of Bengal (9%) are two important long-range transport pathways for the summer monsoon ICSs at the western end of the SHF. © 2016 American Meteorological Society. 资助项目: NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49928
Appears in Collections: 气候变化事实与影响
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作者单位: College of Atmospheric Sciences, Lanzhou University, Lanzhou, China; Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, China
Recommended Citation:
Wu X.,Qie X.,Yuan T.,et al. Meteorological regimes of the most intense convective systems along the southern Himalayan front[J]. Journal of Climate,2016-01-01,29(12)