Verification of GRAPES unified global and regional numerical weather prediction model dynamic core

查看全文 作　　者：YANG [1]XueSheng;HU [1]JiangLin;CHEN [2]DeHui;ZHANG [1]HongLiang;SHEN [1]XueShun;CHEN [3]JiaBin;JI [3]LiRen

机构地区：[1]State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China;[2]National Meteorological Center, Beijing 100081, China;[3]State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Beijing 100029, China

出　　处：《Chinese Science Bulletin》索引2008年第53卷第22期,共7页

基　　金：National Key Technology Research and Development (Grant Nos. 2006BAC02B01 and 2006BAC03B03);National High-Tech Research & Development Program of China (Grant No. 2006AA01A123);National Natural Science Foundation of China (Grant No. 40505023) 摘　　要：During the past few years, most of the new developed numerical weather prediction models adopt the strategy of multi-scale technique. Therefore, China Meteorological Administration has devoted to developing a new generation of global and regional multi-scale model since 2003. In order to validate the performance of the GRAPES (Global and Regional Assimilation and PrEdiction System) model both for its scientific design and program coding, a suite of idealized tests has been proposed and conducted, which includes the density flow test, three-dimensional mountain wave and the cross-polar flow test. The density flow experiment indicates that the dynamic core has the ability to simulate the fine scale nonlinear flow structures and its transient features. While the three-dimensional mountain wave test shows that the model can reproduce the horizontal and vertical propagation of internal gravity waves quite well. Cross-polar flow test demonstrates the rationality of both for the semi-Lagrangian departure point calculation and the discretization of the model near the poles. The real case forecasts reveal that the model has the ability to predict the large-scale weather regimes in summer such as the subtropical high, and to capture the major synoptic patterns in the mid and high latitudes. 关键词：数值天气预报气象学天气预测气象分析

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Verification of GRAPES unified global and regional numerical weather prediction model dynamic core

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