DOI: 10.1002/2015GL066957
论文题名: Convective and stratiform components of the precipitation-moisture relationship
作者: Ahmed F. ; Schumacher C.
刊名: Geophysical Research Letters
ISSN: 0094-8348
EISSN: 1944-8079
出版年: 2015
卷: 42, 期: 23 起始页码: 10453
结束页码: 10462
语种: 英语
英文关键词: convective-stratiform separation
; tropical precipitation-moisture relationship
Scopus关键词: Moisture
; Pickups
; Rain
; Conditional rain
; Convective clouds
; Empirical relationships
; Global circulation model
; Ground radars
; Satellite observations
; Surface precipitation
; Tropical precipitation
; Precipitation (meteorology)
; convective cloud
; convective system
; moisture content
; precipitation (climatology)
; precipitation intensity
; rainfall
; stratiform cloud
英文摘要: We reexamine the well known empirical relationship between area-averaged surface precipitation (P) and the column moisture content (r) using ground radar and satellite observations, with an emphasis on the convective and stratiform rainfall classifications. The rapid rise in P above critical r (rc) or the "pickup" is more pronounced for stratiform rainfall on hourly and less time scales while convective rainfall, displays only a weak pickup above rc. After partitioning the area-averaged rainfall into conditional rain rates and rain area, we find that the nonlinearity in the P-r curve can be almost entirely explained by the nonlinear increase in rain area, especially in stratiform regions. These findings have implications for the representation of organized convective cloud systems in global circulation models. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953638706&doi=10.1002%2f2015GL066957&partnerID=40&md5=c103b31195eb72fc1b523b01827d7433
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7964
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Atmospheric Sciences, Texas AandM University, College Station, TX, United States
Recommended Citation:
Ahmed F.,Schumacher C.. Convective and stratiform components of the precipitation-moisture relationship[J]. Geophysical Research Letters,2015-01-01,42(23).