DOI: 10.1002/jgrd.50143
论文题名: Northern Hemisphere blocking frequency and duration in the CMIP5 models
作者: Dunn-Sigouin E. ; Son S.-W.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 3 起始页码: 1179
结束页码: 1188
语种: 英语
Scopus关键词: Climatology
; Cold season
; Coupled Model Intercomparison Project
; North Atlantic
; North Pacific
; Northern hemisphere
; Northern Hemispheres
; Short durations
; Warm climates
; Climate models
; climate change
; climate modeling
; climatology
; comparative study
; estimation method
; Northern Hemisphere
; seasonal variation
; Atlantic Ocean
; Atlantic Ocean (North)
; Pacific Ocean
; Pacific Ocean (North)
; Russian Federation
英文摘要: Northern Hemisphere (NH) blocking climatology is examined using a subset of climate models participating in the Coupled Model Intercomparison Project phase 5 (CMIP5). Both historical and Representative Concentration Pathway (RCP) 8.5 integrations are analyzed to evaluate the performance of the CMIP5 models and to identify possible changes in NH blocking frequency and duration in a warmer climate. Comparison with reanalysis data reveals that CMIP5 models can reproduce the NH blocking climatology reasonably well, although the frequency of Euro-Atlantic blockings, particularly those with relatively short duration, is significantly underestimated during the cold season. In most models, overestimation of the Pacific blocking frequency is also evident for all durations throughout the year. In comparison to historical integrations, RCP 8.5 integrations show significant decreases in blocking frequency over both the North Pacific and north Atlantic regions, with a hint of increasing blocking frequency over western Russia. However, there is no noticeable change in the duration of individual blocking events for all durations. Key PointsCMIP5 models underestimate Euro-Atlantic blocking frequencyCMIP5 models overestimate North Pacific blocking frequencyBoth Atlantic and Pacific blocking frequencies would decrease in a warm climate ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63941
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Atmospheric and Oceanic Sciences, McGill University Québec, Montréal, Canada; School of Earth and Environmental Sciences, Seoul National University, San 56-1, Sillim-9-Dong, Gwanak-Gu, Seoul, 151-747, South Korea
Recommended Citation:
Dunn-Sigouin E.,Son S.-W.. Northern Hemisphere blocking frequency and duration in the CMIP5 models[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(3)