首页 | 本学科首页   官方微博 | 高级检索  
     检索      

汛期预测的集合预告模拟研究
引用本文:袁重光,杨芳林,李旭,曾庆存.汛期预测的集合预告模拟研究[J].大气科学,1996,20(5):593-598.
作者姓名:袁重光  杨芳林  李旭  曾庆存
作者单位:中国科学院大气物理研究所,北京 100080
基金项目:本研究得到国家攀登计划“气候动力学及气候预测理论的研究”、气候与环境预测研究中心、LASG及中国科学院KY85-10项目的支持
摘    要:本文介绍一个跨季度汛期降水预测的集合预测模拟试验,以1987年为例,用2月1日~26日每隔5天的观测资料作初值进行了6个积分,取其平均作为集合预测,共有7个预测结果,计算了7个预测与观测场的同号率,计算了6个预测的标准差,结果表明:集合预测比个别试验更为合理,这6个试验的结果在大尺度分布上是相近的,其差别也是不大的。集合预测值得继续进行试验。文中也讨论了一些由于大气运动固有的动力学特性,其集合预测与经典的数学考虑有所区别,对集合预测提出了一些新的看法,许多问题还需要继续深入探讨,以期能对该方法作出恰当的评

关 键 词:短期气候距平预测    降水距平百分率    标准差    集合预测

A Modelling of Ensemble Prediction for Summer Precipitation
Yuan Chongguang,Yang Fanglin,Li Xu and Zeng Qingcun.A Modelling of Ensemble Prediction for Summer Precipitation[J].Chinese Journal of Atmospheric Sciences,1996,20(5):593-598.
Authors:Yuan Chongguang  Yang Fanglin  Li Xu and Zeng Qingcun
Abstract:An experiment in ensemble prediction of the summer precipitation over East China is described in this paper. Six predictions start from February 1, 6, 11, 21 and 26, 1987. Taking the average of the six cases as the ensemble mean, thus we have seven predictions. The rate of the same signs between simulated rainfall anomaly and observed one are calculated. We also calculate the standard deviation of simulated rainfall for the six experiments. The results show that the difference between the six experiments are small in the distributions of rainfall on a large scale, the ensemble mean is more reasonable.The features of atmospheric dynamics are also discussed in this paper. It shows that the ensemble prediction of short-range climate differs from the short time and medium range numerical forecasting by physical base.
Keywords:short range climate anomaly rainfall anomaly percentage standard deviation ensemble precipitation  
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《大气科学》浏览原始摘要信息
点击此处可从《大气科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号