DOI: 10.1007/s00382-011-1244-5
Scopus记录号: 2-s2.0-84866388470
论文题名: Evaluating the performance of a WRF physics ensemble over South-East Australia
作者: Evans J.P. ; Ekström M. ; Ji F.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期: 6 起始页码: 1241
结束页码: 1258
语种: 英语
英文关键词: Australia
; Ensemble
; Physics parametrisation
; Regional climate modelling
; WRF
英文摘要: When using the Weather Research and Forecasting (WRF) modelling system it is necessary to choose between many parametrisations for each physics option. This study examines the performance of various physics scheme combinations on the simulation of a series of rainfall events near the south-east coast of Australia known as East Coast Lows. A thirty-six member multi-physics ensemble was created such that each member had a unique set of physics parametrisations. No single ensemble member was found to perform best for all events, variables and metrics. This is reflected in the fact that different climate variables are found to be sensitive to different physical parametrisations. While a standardised super-metric can be used to identify best performers, a step-wise decision approach described here, allows explicit recognition of the "robustness" of choosing one parameterisation over another, allowing the identification of a group of "equally robustly" performing physics combinations. These results suggest that the Mellor-Yamada-Janjic planetary boundary layer scheme and the Betts-Miller-Janjic cumulus scheme can be chosen with some robustness. Possibly with greater confidence, the results also suggest that the Yonsei University planetary boundary layer scheme, Kain-Fritsch cumulus scheme and RRTMG radiation scheme should not be used in combination in this region. Results further indicate that the selection of physics scheme options has larger impact on model performance during the more intensive rainfall events. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55183
Appears in Collections: 过去全球变化的重建
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作者单位: Climate Change Research Centre, University of New South Wales, Sydney, NSW 2052, Australia; CSIRO Land and Water, PO Box 1666, Canberra, ACT 2601, Australia; Office of Environment and Heritage, NSW Department of Premier and Cabinet, PO Box 733, Queanbeyan, NSW 2620, Australia
Recommended Citation:
Evans J.P.,Ekström M.,Ji F.. Evaluating the performance of a WRF physics ensemble over South-East Australia[J]. Climate Dynamics,2012-01-01,39(6)