DOI: 10.1007/s00382-017-3736-4
Scopus记录号: 2-s2.0-85019912976
论文题名: Evaluation of CORDEX-Arctic daily precipitation and temperature-based climate indices over Canadian Arctic land areas
作者: Diaconescu E.P. ; Mailhot A. ; Brown R. ; Chaumont D.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-05-06 起始页码: 2061
结束页码: 2085
语种: 英语
英文关键词: Canadian Arctic
; CORDEX experiment
; Daily precipitation
; Precipitation climate indices
; Regional climate model evaluation
; Temperature climate indices
Scopus关键词: air temperature
; climate modeling
; climate variation
; ensemble forecasting
; experimental study
; extreme event
; precipitation (climatology)
; regional climate
; Canada
; Canadian Arctic
; Yukon Territory
英文摘要: This study focuses on the evaluation of daily precipitation and temperature climate indices and extremes simulated by an ensemble of 12 Regional Climate Model (RCM) simulations from the ARCTIC-CORDEX experiment with surface observations in the Canadian Arctic from the Adjusted Historical Canadian Climate Dataset. Five global reanalyses products (ERA-Interim, JRA55, MERRA, CFSR and GMFD) are also included in the evaluation to assess their potential for RCM evaluation in data sparse regions. The study evaluated the means and annual anomaly distributions of indices over the 1980–2004 dataset overlap period. The results showed that RCM and reanalysis performance varied with the climate variables being evaluated. Most RCMs and reanalyses were able to simulate well climate indices related to mean air temperature and hot extremes over most of the Canadian Arctic, with the exception of the Yukon region where models displayed the largest biases related to topographic effects. Overall performance was generally poor for indices related to cold extremes. Likewise, only a few RCM simulations and reanalyses were able to provide realistic simulations of precipitation extreme indicators. The multi-reanalysis ensemble provided superior results to individual datasets for climate indicators related to mean air temperature and hot extremes, but not for other indicators. These results support the use of reanalyses as reference datasets for the evaluation of RCM mean air temperature and hot extremes over northern Canada, but not for cold extremes and precipitation indices. © 2017, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109428
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Institut national de la recherche scientifique, Eau Terre Environnement, 490 de la Couronne, Québec, QC G1K 9A9, Canada; Ouranos, Montréal, QC, Canada; Environment and Climate Change Canada, Montréal, QC, Canada
Recommended Citation:
Diaconescu E.P.,Mailhot A.,Brown R.,et al. Evaluation of CORDEX-Arctic daily precipitation and temperature-based climate indices over Canadian Arctic land areas[J]. Climate Dynamics,2018-01-01,50(2018-05-06)