DOI: 10.1175/JCLI-D-11-00265.1
Scopus记录号: 2-s2.0-84862068218
论文题名: High-resolution global climate simulations with the ECMWF model in project athena: Experimental design, model climate, and seasonal forecast skill
作者: Jung T. ; Miller M.J. ; Palmer T.N. ; Towers P. ; Wedi N. ; Achuthavarier D. ; Adams J.M. ; Altshuler E.L. ; Cash B.A. ; Kinter III J.L. ; Marx L. ; Stan C. ; Hodges K.I.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 9 起始页码: 3155
结束页码: 3172
语种: 英语
Scopus关键词: Anthropogenic climate changes
; Atmospheric circulation
; Atmospheric phenomena
; Boreal winters
; Extratropical cyclones
; Extratropics
; General circulation model
; Global climate simulations
; High resolution
; Highest resolutions
; Horizontal resolution
; International collaborations
; Madden-Julian oscillation
; Mesoscale
; Model errors
; Northern Hemispheres
; Seasonal forecasts
; Tropical precipitation
; Climate change
; Computer simulation
; Experiments
; Forecasting
; International cooperation
; Plasma diagnostics
; Storms
; Tropics
; Climate models
; anthropogenic effect
; atmospheric general circulation model
; climate change
; climate modeling
; climate prediction
; computer simulation
; error analysis
; experimental design
; global climate
; Madden-Julian oscillation
; Northern Hemisphere
; numerical model
; weather forecasting
英文摘要: The sensitivity to the horizontal resolution of the climate, anthropogenic climate change, and seasonal predictive skill of the ECMWF model has been studied as part of Project Athena-an international collaboration formed to test the hypothesis that substantial progress in simulating and predicting climate can be achieved if mesoscale and subsynoptic atmospheric phenomena are more realistically represented in climate models. In this study the experiments carried out with the ECMWF model (atmosphere only) are described in detail. Here, the focus is on the tropics and the Northern Hemisphere extratropics during boreal winter. The resolutions considered in Project Athena for the ECMWF model are T159 (126 km), T511 (39 km), T1279 (16 km), and T2047 (10 km). It was found that increasing horizontal resolution improves the tropical precipitation, the tropical atmospheric circulation, the frequency of occurrence of Euro-Atlantic blocking, and the representation of extratropical cyclones in large parts of the Northern Hemisphere extratropics. All of these improvements come from the increase in resolution from T159 to T511 with relatively small changes for further resolution increases to T1279 and T2047, although it should be noted that results from this very highest resolution are from a previously untested model version. Problems in simulating the Madden-Julian oscillation remain unchanged for all resolutions tested. There is some evidence that increasing horizontal resolution to T1279 leads to moderate increases in seasonal forecast skill during boreal winter in the tropics and Northern Hemisphere extratropics. Sensitivity experiments are discussed, which helps to foster a better understanding of some of the resolution dependence found for the ECMWF model in Project Athena. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52423
Appears in Collections: 气候变化事实与影响
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作者单位: ECMWF, Reading, United Kingdom; AWI, Bremerhaven, Germany; COLA, Calverton, MD, United States; ESSC, Reading, United Kingdom
Recommended Citation:
Jung T.,Miller M.J.,Palmer T.N.,et al. High-resolution global climate simulations with the ECMWF model in project athena: Experimental design, model climate, and seasonal forecast skill[J]. Journal of Climate,2012-01-01,25(9)