DOI: 10.1175/JCLI-D-12-00844.1
Scopus记录号: 2-s2.0-84888050926
论文题名: Multiscale performance of the ALARO-0 model for simulating extreme summer precipitation climatology in Belgium
作者: De Troch R. ; Hamdi R. ; Van de Vyver H. ; Geleyn J.-F. ; Termonia P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 22 起始页码: 8895
结束页码: 8915
语种: 英语
Scopus关键词: Cloud parameterizations
; Convective parameterization
; European centre for medium-range weather forecasts
; Extreme events
; Generalized Pareto Distributions
; High resolution simulations
; High spatial resolution
; Regional climate modeling
; Climate models
; Parameterization
; Precipitation (chemical)
; Precipitation (meteorology)
; Weather forecasting
; Computer simulation
; climate modeling
; cloud cover
; convective system
; downscaling
; observational method
; parameterization
; performance assessment
; precipitation assessment
; precipitation intensity
; regional climate
; spatial resolution
; weather forecasting
; Belgium
英文摘要: Daily summer precipitation over Belgium from the Aire Limitée Adaptation Dynamique Développement International (ALADIN) model and a version of the model that has been updated with physical parameterizations, the so-called ALARO-0 model [ALADIN and AROME (Application de la Recherche à l'Opérationnel à Meso-Echelle) combined model, first baseline version released in 1998], are compared with respect to station observations for the period 1961-90. The 40-yr European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-40) is dynamically downscaled using both models on a horizontal resolution of 40 km, followed by a one-way nesting on high spatial resolutions of 10 and 4 km. This setup allows us to explore the relative importance of spatial resolution versus parameterization formulation on the model skill to correctly simulate extreme daily precipitation. Model performances are assessed through standard statistical errors and density, frequency, and quantile distributions as well as extreme value analysis, using the peak-over-threshold method and generalized Pareto distribution. The 40-km simulations of ALADIN and ALARO-0 show similar results, both reproducing the observations reasonably well. For the high-resolution simulations, ALARO-0 at both 10 and 4 km is in better agreement with the observations than ALADIN. The ALADIN model consistently produces too high precipitation rates. The findings demonstrate that the new parameterizations within the ALARO-0 model are responsible for a correct simulation of extreme summer precipitation at various horizontal resolutions. Moreover, this study shows that ALARO-0 is a good candidate model for regional climate modeling. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51550
Appears in Collections: 气候变化事实与影响
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作者单位: Royal Meteorological Institute, Brussels, Belgium; Department of Physics and Astronomy, Ghent University, Ghent, Belgium; Czech Hydrometeorological Institute, Prague, Czech Republic
Recommended Citation:
De Troch R.,Hamdi R.,Van de Vyver H.,et al. Multiscale performance of the ALARO-0 model for simulating extreme summer precipitation climatology in Belgium[J]. Journal of Climate,2013-01-01,26(22)