DOI: 10.1175/JCLI-D-12-00213.1
Scopus记录号: 2-s2.0-84880674667
论文题名: Role of the Tibetan Plateau on the Annual Variation of Mean Atmospheric Circulation and Storm-Track Activity
作者: Lee S.-S. ; Lee J.-Y. ; Ha K.-J. ; Wang B. ; Kitoh A. ; Kajikawa Y. ; Abe M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 14 起始页码: 5270
结束页码: 5286
语种: 英语
Scopus关键词: Atmospheric circulation
; Destructive effects
; East Asian winter monsoon
; Meteorological research institutes
; Moist static energy
; North Pacific Ocean
; Subseasonal variability
; Western North Pacific
; Atmospheric thermodynamics
; Climatology
; Energy conversion
; Storms
; annual variation
; atmosphere-ocean coupling
; atmospheric circulation
; jet
; sea surface temperature
; standing wave
; storm track
; China
; Pacific Ocean
; Pacific Ocean (North)
; Qinghai-Xizang Plateau
英文摘要: This study reexamines how the Tibetan Plateau (TP) modulates the annual variation of atmospheric circulation and storm-track activity based on the Meteorological Research Institute's atmosphere-ocean coupled model experiments with a progressive TP uplift from 0% to 100% of the present height. Three major roles of the TP on atmospheric circulation and storm-track activity are identified. First, consistent with a previous finding, the TP tends to intensify the upper-level jet and enhance baroclinicity in the North Pacific Ocean but significantly weaken storm-track activity over the TP, East Asia, and the western North Pacific during the cold season. Second, the TP amplifies stationary waves that are closely linked to transient eddies. In particular, the TP enhances the Siberian high and the Aleutian low, which together contribute to the strengthening of the East Asian winter monsoon circulation and the weakening of storm-track activity. Third, the TP significantly modulates the subseasonal variability of the Pacific storm-track (PST) activity. In particular, the TP tends to suppress PST activity during midwinter despite the fact that it strengthens baroclinicity along the Pacific jet. The midwinter suppression of PST activity, which is well reproduced in a control run with a realistic TP, gradually disappears as the TP height decreases. Major factors for the midwinter suppression of the PST associated with the TP include the 1) destructive effect of an excessively strong jet leading to an inefficiency of barotropic energy conversion, 2) reduction of baroclinicity over the northern part of the TP, and 3) subseasonally varying SST change and resulting moist static energy.©2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51798
Appears in Collections: 气候变化事实与影响
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作者单位: Division of Earth Environmental System, Pusan National University, Busan, South Korea; International Pacific Research Center, Department of Meteorology, University of Hawaii, Honolulu, HI, United States; Meteorological Research Institute, Tsukuba, Japan; Advanced Institute for Computational Science, RIKEN, Kobe, Japan; Arctic Environment Research Center, National Institute of Polar Research, Tokyo, Japan; University of Hawaii/International Pacific Research Center, POST Bldg., Room 403B, 1680 East West Road, Honolulu, HI 96822, United States
Recommended Citation:
Lee S.-S.,Lee J.-Y.,Ha K.-J.,et al. Role of the Tibetan Plateau on the Annual Variation of Mean Atmospheric Circulation and Storm-Track Activity[J]. Journal of Climate,2013-01-01,26(14)