DOI: 10.1175/JCLI-D-11-00727.1
Scopus记录号: 2-s2.0-84867669762
论文题名: Influence of the kuroshio in the east China sea on the early summer (Baiu) rain
作者: Sasaki Y.N. ; Minobe S. ; Asai T. ; Inatsu M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 19 起始页码: 6627
结束页码: 6645
语种: 英语
Scopus关键词: Air sea interactions
; Boundary currents
; Convective-scale processes
; Marine boundary layers
; Nonhydrostatic model
; Water budget
; Atmospheric humidity
; Atmospheric pressure
; Evaporation
; Phase transitions
; Rain
; Ocean currents
; air-sea interaction
; atmospheric modeling
; atmospheric pressure
; boundary layer
; convective system
; diabatic process
; marine atmosphere
; precipitation (climatology)
; rainband
; sea surface temperature
; summer
; water budget
; western boundary current
; wind velocity
; East China Sea
; Kuroshio Current
; Pacific Ocean
英文摘要: Influence of the Kuroshio in the East China Sea on the baiu rainband is examined using satellite observations, a reanalysis dataset, and a regional atmospheric model from 2003 to 2008. Satellite observations and reanalysis data reveal that precipitation over the Kuroshio is the highest in early summer (June), when the baiu rainband covers the East China Sea. The high rainfall is collocated with the warm sea surface temperature (SST) tongue of the Kuroshio. This locally enhanced precipitation is embedded in the large-scale baiu rainband, so that the amplitude of precipitation over the Kuroshio is twice as large as that in its surrounding area. The Kuroshio is also accompanied by high surface wind speed, energetic evaporation, and wind convergence. This wind convergence likely results from the SST influence on atmospheric pressure through not only temperature changes, but also humidity changes. Furthermore, the Kuroshio anchors the ascent motion and large diabatic heating with a peak in the midtroposphere, suggesting that the influence of the Kuroshio extends to the upper troposphere. It is also found that the East China Sea in June is the region of the strongest deep atmospheric response to western boundary currents along with the Gulf Stream region in summer. The observational results are well reproduced by the regional atmospheric model. The model indicates that when the SST tongue of the Kuroshio is smoothed, the enhanced precipitation, the energetic evaporation, and the wind convergence over the Kuroshio disappear, although the large-scale structure of the baiu rainband is not essentially changed. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52201
Appears in Collections: 气候变化事实与影响
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作者单位: Graduate School of Science, Hokkaido University, Sapporo, Japan
Recommended Citation:
Sasaki Y.N.,Minobe S.,Asai T.,et al. Influence of the kuroshio in the east China sea on the early summer (Baiu) rain[J]. Journal of Climate,2012-01-01,25(19)