DOI: 10.1175/JCLI-D-15-0331.1
Scopus记录号: 2-s2.0-84966340433
论文题名: Relationships between hourly rainfall intensity and atmospheric variables over the contiguous United States
作者: Lepore C. ; Allen J.T. ; Tippett M.K.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 9 起始页码: 3181
结束页码: 3197
语种: 英语
Scopus关键词: Atmospheric humidity
; Atmospheric temperature
; Climatology
; Regression analysis
; Thermodynamics
; Geographic location
; North America
; Reanalysis
; Statistical techniques
; Surface observation
; Rain
; climatology
; meteorology
; numerical model
; precipitation intensity
; rainfall
; regression analysis
; thermodynamics
; United States
英文摘要: Rainfall intensity displays relationships with atmospheric conditions such as surface temperature, and these relationships have implications for how the intensity of rainfall varies with climate. Here, hourly gauge measurements of rainfall over the contiguous United States (CONUS) are related to atmospheric variables taken from the North American Regional Reanalysis for the period 1979-2012. This analysis extends previous work relating the rainfall process to the environment by including a wider range of variables in univariate and bivariate quantile regressions. Known covariate relationships are used to quantify the regional contributions of different weather regimes to rainfall occurrence and to identify preferential atmospheric states for rainfall occurrence. The efficiency of different sets of regressors is evaluated, and the results show that both moisture availability and vertical instability should be taken into account, with CAPE in combination with specific humidity or dewpoint temperature being the most powerful regressors. Different regions and seasons behave differently, pointing to the challenges of constructing global or CONUS-wide models for representing the rainfall process. In particular, the relationships between environment and rainfall in the west of the United States are different from other regions, reflecting nonlocal rainfall processes. Most of the coastal and eastern United States display relatively low regional variability in the relationships between rainfall and environment. © 2016 American Meteorological Society. 资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49946
Appears in Collections: 气候变化事实与影响
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作者单位: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; International Research Institute for Climate and Society, Columbia University, Palisades, NY, United States; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Center of Excellence for Climate Change Research, Department of Meteorology, King Abdulaziz University, Jeddah, Saudi Arabia
Recommended Citation:
Lepore C.,Allen J.T.,Tippett M.K.. Relationships between hourly rainfall intensity and atmospheric variables over the contiguous United States[J]. Journal of Climate,2016-01-01,29(9)