DOI: 10.1007/s00382-013-1737-5
Scopus记录号: 2-s2.0-84888054535
论文题名: Present climate and climate change over North America as simulated by the fifth-generation Canadian regional climate model
作者: Šeparović L. ; Alexandru A. ; Laprise R. ; Martynov A. ; Sushama L. ; Winger K. ; Tete K. ; Valin M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 41, 期: 2017-11-12 起始页码: 3167
结束页码: 3201
语种: 英语
英文关键词: Bukovsky's regionalisation
; Climate change projections over North America
; CORDEX
; CRCM5
; Regional climate modelling
英文摘要: The fifth-generation Canadian Regional Climate Model (CRCM5) was used to dynamically downscale two Coupled Global Climate Model (CGCM) simulations of the transient climate change for the period 1950-2100, over North America, following the CORDEX protocol. The CRCM5 was driven by data from the CanESM2 and MPI-ESM-LR CGCM simulations, based on the historical (1850-2005) and future (2006-2100) RCP4.5 radiative forcing scenario. The results show that the CRCM5 simulations reproduce relatively well the current-climate North American regional climatic features, such as the temperature and precipitation multiannual means, annual cycles and temporal variability at daily scale. A cold bias was noted during the winter season over western and southern portions of the continent. CRCM5-simulated precipitation accumulations at daily temporal scale are much more realistic when compared with its driving CGCM simulations, especially in summer when small-scale driven convective precipitation has a large contribution over land. The CRCM5 climate projections imply a general warming over the continent in the 21st century, especially over the northern regions in winter. The winter warming is mostly contributed by the lower percentiles of daily temperatures, implying a reduction in the frequency and intensity of cold waves. A precipitation decrease is projected over Central America and an increase over the rest of the continent. For the average precipitation change in summer however there is little consensus between the simulations. Some of these differences can be attributed to the uncertainties in CGCM-projected changes in the position and strength of the Pacific Ocean subtropical high pressure. © 2013 The Author(s). 资助项目: Canadian Foundation for Climate and Atmospheric Sciences
; NSERC, Natural Sciences and Engineering Research Council of Canada
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54719
Appears in Collections: 过去全球变化的重建
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作者单位: Centre ESCER (Étude et Simulation du Climat à l'Échelle Régionale), Montréal, QC, Canada; Département des Sciences de la Terre et de l'Atmosphère, Université du Québec à Montréal (UQAM), C.P. 8888, Succ. Centre-ville, Montréal, QC, H3C 3P8, Canada; Canada Research Chair in Regional Climate Modelling, UQAM, Montréal, QC, Canada
Recommended Citation:
Šeparović L.,Alexandru A.,Laprise R.,et al. Present climate and climate change over North America as simulated by the fifth-generation Canadian regional climate model[J]. Climate Dynamics,2013-01-01,41(2017-11-12)