DOI: 10.1175/JCLI-D-11-00097.1
Scopus记录号: 2-s2.0-84856966937
论文题名: Changes in the annual range of precipitation under global warming
作者: Chou C. ; Lan C.-W.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 1 起始页码: 222
结束页码: 235
语种: 英语
Scopus关键词: Annual range
; Climate model simulations
; Climate variability
; Dominant mechanism
; Dynamic component
; Moisture advection
; Moisture budget
; Moisture convergence
; Regional scale
; Seasonal cycle
; Trends
; Upward trend
; Vertical motions
; Advection
; Climatology
; Evaporation
; Global warming
; Phase transitions
; Moisture
; advection
; annual variation
; climate change
; climate effect
; climate modeling
; climate variation
; evaporation
; global warming
; moisture flux
; precipitation assessment
; precipitation intensity
; rainfall
; seasonal variation
; trend analysis
英文摘要: The annual range of precipitation, which is the difference between maximum and minimum precipitation within a year, is examined in climate model simulations under global warming. For global averages, the annual range of precipitation tends to increase as the globe warms. On a regional basis, this enhancement is found over most areas of the world, except for the bands along 308S and 308N. The enhancement in the annual range of precipitation is mainly associated with larger upward trends ofmaximum precipitation and smaller upward trends or downward trends of minimum precipitation. Based on the moisture budget analysis, the dominant mechanism is vertical moisture advection, both on a global average and on a regional scale. The vertical moisture advection, moisture convergence induced by vertical motion, includes the thermodynamic component, which is associated with increased water vapor, and the dynamic component, which is associated with changes in circulation. Generally, the thermodynamic component enhances the annual range of precipitation, while the dynamic component tends to reduce it. Evaporation has a positive contribution to both maximumand minimumprecipitation, but very little to the annual range of precipitation. Even though evaporation and horizontal moisture advection are small for a global average, they could be important on a regional basis. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52600
Appears in Collections: 气候变化事实与影响
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作者单位: Research Center for Environmental Changes, Academia Sinica, Department of Atmospheric Sciences, Taipei, Taiwan; Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan
Recommended Citation:
Chou C.,Lan C.-W.. Changes in the annual range of precipitation under global warming[J]. Journal of Climate,2012-01-01,25(1)