DOI: 10.1002/2014GL062247
论文题名: Temperature and CAPE dependence of rainfall extremes in the eastern United States
作者: Lepore C. ; Veneziano D. ; Molini A.
刊名: Geophysical Research Letters
ISSN: 0094-9074
EISSN: 1944-8805
出版年: 2015
卷: 42, 期: 1 起始页码: 74
结束页码: 83
语种: 英语
英文关键词: CAPE
; dew point temperature
; extremes
; precipitation
; temperature
Scopus关键词: Climate change
; Natural convection
; Potential energy
; Precipitation (chemical)
; Rain
; Temperature
; Atmospheric convection
; Atmospheric stability
; CAPE
; Convective available potential energies
; Dewpoint temperature
; Effects of temperature
; Extremes
; Rainfall intensity
; Atmospheric temperature
; atmospheric convection
; climate effect
; dew point
; extreme event
; moisture content
; precipitation intensity
; United States
英文摘要: We analyze how extreme rainfall intensities in the Eastern United States depend on temperature T, dew point temperature Td, and convective available potential energy CAPE, in addition to geographic sub-region, season, and averaging duration. When using data for the entire year, rainfall intensity has a quasi Clausius-Clapeyron (CC) dependence on T, with super-CC slope in a limited temperature range and a maximum around 25°C. While general, these features vary with averaging duration, season, the quantile of rainfall intensity, and to some extent geographic sub-region. By using Td and CAPE as regressors, we separate the effects of temperature on rainfall extremes via increased atmospheric water content and via enhanced atmospheric convection. The two contributions have comparable magnitudes, pointing at the need to consider both Td and atmospheric stability parameters when assessing the impact of climate change on rainfall extremes. Key Point Atmospheric moisture and convection have comparable effects on rainfall extremes ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939258625&doi=10.1002%2f2014GL062247&partnerID=40&md5=85751732abe46c0e2ea793ff60fa860d
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8690
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: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Recommended Citation:
Lepore C.,Veneziano D.,Molini A.. Temperature and CAPE dependence of rainfall extremes in the eastern United States[J]. Geophysical Research Letters,2015-01-01,42(1).