DOI: 10.1175/JCLI-D-17-0308.1
Scopus记录号: 2-s2.0-85043685281
论文题名: Evaluation of extratropical cyclone precipitation in the North Atlantic basin: An analysis of ERA-Interim, WRF, and two CMIP5 models
作者: Booth J.F. ; Naud C.M. ; Willison J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 6 起始页码: 2345
结束页码: 2360
语种: 英语
英文关键词: Climate models
; Extratropical cyclones
; Precipitation
Scopus关键词: Moisture
; Parameterization
; Precipitation (chemical)
; Storms
; Weather forecasting
; Wind
; Convective precipitation
; Dynamical strength
; Extratropical cyclones
; General circulation model
; Horizontal resolution
; Precipitation rates
; Surface wind speed
; Weather research and forecasting models
; Climate models
英文摘要: The representation of extratropical cyclone (ETC) precipitation in general circulation models (GCMs) and the Weather Research and Forecasting (WRF) Model is analyzed. This work considers the link between ETC precipitation and dynamical strength and tests if parameterized convection affects this link for ETCs in the North Atlantic basin. Lagrangian cyclone tracks of ETCs in ERA-Interim (ERAI), GISS and GFDL CMIP5 models, and WRF with two horizontal resolutions are utilized in a compositing analysis. The 20-km-resolution WRF Model generates stronger ETCs based on surface wind speed and cyclone precipitation. The GCMs and ERAI generate similar composite means and distributions for cyclone precipitation rates, but GCMs generate weaker cyclone surface winds than ERAI. The amount of cyclone precipitation generated by the convection scheme differs significantly across the datasets, with the GISS model generating the most, followed by ERAI and then the GFDL model. The models and reanalysis generate relatively more parameterized convective precipitation when the total cyclone-averaged precipitation is smaller. This is partially due to the contribution of parameterized convective precipitation occurring more often late in the ETC's life cycle. For reanalysis and models, precipitation increases with both cyclone moisture and surface wind speed, and this is true if the contribution from the parameterized convection scheme is larger or not. This work shows that these different models generate similar total ETC precipitation despite large differences in the parameterized convection, and these differences do not cause unexpected behavior in ETC precipitation sensitivity to cyclone moisture or surface wind speed. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111649
Appears in Collections: 气候减缓与适应
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作者单位: City College of the City University of New York, New York, NY, United States; NASA Goddard Institute for Space Studies, New York, NY, United States; Columbia University, United States; North Carolina State University, Raleigh, NC, United States
Recommended Citation:
Booth J.F.,Naud C.M.,Willison J.. Evaluation of extratropical cyclone precipitation in the North Atlantic basin: An analysis of ERA-Interim, WRF, and two CMIP5 models[J]. Journal of Climate,2018-01-01,31(6)