DOI: 10.1175/JCLI-D-14-00449.1
Scopus记录号: 2-s2.0-84922810308
论文题名: Asian summer monsoon in CMIP5 projections: A link between the change in extreme precipitation and monsoon dynamics
作者: Freychet N. ; Hsu H.-H. ; Chou C. ; Wu C.-H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 4 起始页码: 1477
结束页码: 1493
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Moisture
; Precipitation (meteorology)
; Rain
; Uncertainty analysis
; Asian summer monsoons
; Atmospheric circulation
; Coupled Model Intercomparison Project
; Extreme precipitation
; Moisture flux convergences
; Spatial and temporal variation
; Vertical circulation
; Western North Pacific
; Climate change
; advection
; atmospheric circulation
; climate change
; climate modeling
; ensemble forecasting
; extreme event
; moisture flux
; monsoon
; precipitation intensity
; prediction
; rainfall
; spatial variation
; summer
; temporal variation
; weather forecasting
; Far East
; India
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: Change in extreme events in climate projections is a major concern. If the frequency of dry events is expected to increase in a warmer climate (thus, the overall number of wet days will decrease), heavy and extreme precipitation are also expected to increase because of a shift of the precipitation spectrum. However, the forecasts exhibit numerous uncertainties. This study focuses on the Asian region, separated into the following three subregions: the East Asian region, the Indian region, and western North Pacific region, where the summer monsoon can bring heavy rainfall. Particularly emphasized herein is the reliability of the projection, using data from a large ensemble of 30 models from phase 5 of the Coupled Model Intercomparison Project. The scattering of the ensemble enables obtaining an optimal estimate of the uncertainties, and it is used to compute the correlation between projected changes of extreme events and circulation changes. The results show clear spatial and temporal variations in the confidence of changes, with results being more reliable during the wet season (i.e., the summer monsoon). The ensemble predicts changes in atmospheric circulation with favorable confidence, especially in the low-level moisture flux convergence (MFC). However, the correlation between this mean change and the modification of extreme events is nonsignificant. Also analyzed herein are the correlation and change of MFC exclusively during these events. The horizontal MFC exerts a nonnegligible influence on the change in the intensity of extremes. However, it is mostly the change in vertical circulation and moisture advection that is correlated with the change in frequency and intensity of extreme events. © 2015 American Meteorological Society. 资助项目: NSC, National Science Council Taiwan
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50818
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Research Center for Environmental Changes, Taipei, Taiwan
Recommended Citation:
Freychet N.,Hsu H.-H.,Chou C.,et al. Asian summer monsoon in CMIP5 projections: A link between the change in extreme precipitation and monsoon dynamics[J]. Journal of Climate,2015-01-01,28(4)