DOI: 10.1007/s00382-012-1560-4
Scopus记录号: 2-s2.0-84881022680
论文题名: Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations
作者: Hannachi A. ; Barnes E.A. ; Woollings T.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 41, 期: 2017-03-04 起始页码: 995
结束页码: 1007
语种: 英语
英文摘要: A systematic analysis of the winter North Atlantic eddy-driven jet stream latitude and wind speed from 52 model integrations, taken from the coupled model intercomparison project phase 3, is carried out and compared to results obtained from the ERA-40 reanalyses. We consider here a control simulation, twentieth century simulation, and two time periods (2046-2065 and 2081-2100) from a twenty-first century, high-emission A2 forced simulation. The jet wind speed seasonality is found to be similar between the twentieth century simulations and the ERA-40 reanalyses and also between the control and forced simulations although nearly half of the models overestimate the amplitude of the seasonal cycle. A systematic equatorward bias of the models jet latitude seasonality, by up to 7°, is observed, and models additionally overestimate the seasonal cycle of jet latitude about the mean, with the majority of the models showing equatorward and poleward biases during the cold and warm seasons respectively. A main finding of this work is that no GCM under any forcing scenario considered here is able to simulate the trimodal behaviour of the observed jet latitude distribution. The models suffer from serious problems in the structure of jet variability, rather than just quantitiative errors in the statistical moments. © 2012 Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54829
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Meteorology, Stockholm University, 106 91 Stockholm, Sweden; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Department of Meteorology, The University of Reading, Reading, United Kingdom
Recommended Citation:
Hannachi A.,Barnes E.A.,Woollings T.. Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations[J]. Climate Dynamics,2013-01-01,41(2017-03-04)