气象Issue(8)：932-941,10.DOI:10.7519/j.issn.1000-0526.2015.08.002
GRAPES 中尺度模式中不同积云参数化方案预报性能对比研究
Comparative Analysis of Different Cumulus Rarameterization Schemes in GRARES Meso Model
摘要
Abstract
Based on the new generation numerical prediction model GRARES Meso,the numerical experi-ments were carried out to evaluate the two kinds of cumulus convective parameterization schemes,Kain-Fritsch Eta scheme and Betts-Miller-Janjic scheme,for the winter (January)and summer (June-August) 2009.The results show that there is no obvious differences between the two schemes for winter,but some differences exist for the summer.The statistic characteristic of meteorological fields,such as wind,height and temperature,shows that BMJ performances slightly better than KFeta in the low atmospheric layer, but it does not do as well as KFeta in the middle and high layers.The results of T-Score verification indicate that KFeta scheme has a higher score than BMJ scheme for precipitation forecast,especially in pre-dicting moderate to heavy rains over southern China.The spatial distribution of the average contribution rate in total precipitation of the two schemes is different obviously in the low-latitude ocean region,where the contribution rate of BMJ scheme is greater than KFeta scheme.In the drizzle level,the probability dis-tribution of cumulus precipitation contribution rate in total precipitation looks like steep “U”shaped.With the increase of precipitation levels,the proportion of cumulus precipitation of KFeta becomes large.On the contrary,the higher of the precipitation level is,the lower proportion of the cumulus precipitation reaches by using the BMJ cumulus scheme.关键词
GRARES Meso/积云对流参数化方案/均方根误差/TS 评分/积云降水贡献率Key words
GRARES Meso/cumulus convective parameterization scheme/RMSE/TS score/contribution rate of cumulus precipitation分类
医药卫生引用本文复制引用
郭云云,邓莲堂,范广洲,李泽椿..GRAPES 中尺度模式中不同积云参数化方案预报性能对比研究[J].气象,2015,(8):932-941,10.基金项目
国家自然科学基金项目（41275103）资助 （）
