DOI: 10.1175/JCLI-D-11-00239.1
Scopus记录号: 2-s2.0-84862067261
论文题名: Mechanisms for global warming impacts on precipitation frequency and intensity
作者: Chou C. ; Chen C.-A. ; Tan P.-H. ; Chen K.T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 9 起始页码: 3291
结束页码: 3306
语种: 英语
Scopus关键词: Atmospheric water vapor
; Climate model simulations
; Dynamic component
; Extreme events
; Global warming impact
; Heavy precipitation
; Hydrologic cycles
; Precipitation frequency
; Tropical precipitation
; Vertical motions
; Climate change
; Climate models
; Global warming
; Heavy water
; Rain
; Thermodynamics
; Vapors
; Dynamics
; climate change
; climate modeling
; convection
; extreme event
; global warming
; hydrological cycle
; precipitation intensity
; rainfall
; thermodynamics
; water vapor
英文摘要: Global warming mechanisms that cause changes in frequency and intensity of precipitation in the tropics are examined in climate model simulations. Under global warming, tropical precipitation tends to be more frequent and intense for heavy precipitation but becomes less frequent and weaker for light precipitation. Changes in precipitation frequency and intensity are both controlled by thermodynamic and dynamic components. The thermodynamic component is induced by changes in atmospheric water vapor, while the dynamic component is associated with changes in vertical motion.A set of equations is derived to estimate both thermodynamic and dynamic contributions to changes in frequency and intensity of precipitation, especially for heavy precipitation. In the thermodynamic contribution, increased water vapor reduces the magnitude of the required vertical motion to generate the same strength of precipitation, so precipitation frequency increases. Increased water vapor also intensifies precipitation due to the enhancement of water vapor availability in the atmosphere. In the dynamic contribution, the more stable atmosphere tends to reduce the frequency and intensity of precipitation, except for the heaviest precipitation. The dynamic component strengthens the heaviest precipitation in most climate model simulations, possibly due to a positive convective feedback. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52402
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, Academia Sinica, Department of Atmospheric Sciences, National Taiwan University, Taipei, Taiwan; Department of Earth Sciences, National Taiwan Normal University, Taipei, Taiwan; Department of History and Geography, National Chiayi University, Chiayi, Taiwan
Recommended Citation:
Chou C.,Chen C.-A.,Tan P.-H.,et al. Mechanisms for global warming impacts on precipitation frequency and intensity[J]. Journal of Climate,2012-01-01,25(9)