DOI: 10.1007/s00382-016-3404-0
Scopus记录号: 2-s2.0-84992126372
论文题名: Projected changes to short- and long-duration precipitation extremes over the Canadian Prairie Provinces
作者: Masud M.B. ; Khaliq M.N. ; Wheater H.S.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 49, 期: 2017-05-06 起始页码: 1597
结束页码: 1616
语种: 英语
英文关键词: Canadian Prairie Provinces
; Climate change
; NARCCAP
; Precipitation extremes
; Regional frequency analysis
英文摘要: The effects of climate change on April–October short- and long-duration precipitation extremes over the Canadian Prairie Provinces were evaluated using a multi-Regional Climate Model (RCM) ensemble available through the North American Regional Climate Change Assessment Program. Simulations considered include those performed with six RCMs driven by the National Centre for Environmental Prediction (NCEP) reanalysis II product for the 1981–2000 period and those driven by four Atmosphere–Ocean General Circulation Models (AOGCMs) for the current 1971–2000 and future 2041–2070 periods (i.e. a total of 11 current-to-future period simulation pairs). A regional frequency analysis approach was used to develop 2-, 5-, 10-, 25-, and 50-year return values of precipitation extremes from NCEP and AOGCM-driven current and future period simulations that respectively were used to study the performance of RCMs and projected changes for selected return values at regional, grid-cell and local scales. Performance errors due to internal dynamics and physics of RCMs studied for the 1981–2000 period reveal considerable variation in the performance of the RCMs. However, the performance errors were found to be much smaller for RCM ensemble averages than for individual RCMs. Projected changes in future climate to selected regional return values of short-duration (e.g. 15- and 30-min) precipitation extremes and for longer return periods (e.g. 50-year) were found to be mostly larger than those to the longer duration (e.g. 24- and 48-h) extremes and short return periods (e.g. 2-year). Overall, projected changes in precipitation extremes were larger for southeastern regions followed by southern and northern regions and smaller for southwestern and western regions of the study area. The changes to return values were also found to be statistically significant for the majority of the RCM–AOGCM simulation pairs. These projections might be useful as a key input for the future planning of urban drainage infrastructure and development of strategic climate change adaptation measures. © 2016, Springer-Verlag Berlin Heidelberg. 资助项目: CERC, Canada Excellence Research Chairs, Government of Canada
; U of S, University of Saskatchewan
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53065
Appears in Collections: 过去全球变化的重建
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作者单位: Global Institute for Water Security and School of Environment and Sustainability, University of Saskatchewan, 11 Innovation Boulevard, Saskatoon, SK, Canada; Ocean, Coastal and River Engineering, National Research Council of Canada, 1200 Montreal Road, Building M-32, Ottawa, ON, Canada
Recommended Citation:
Masud M.B.,Khaliq M.N.,Wheater H.S.. Projected changes to short- and long-duration precipitation extremes over the Canadian Prairie Provinces[J]. Climate Dynamics,2017-01-01,49(2017-05-06)