摘要
对复杂地形条件下嵌套细网格数值模式进行了改进和发展，使之成为水平格距为５０ｋｍ，垂直分层为１１层的高分辨率模式。同时对其物理过程如积云对流参数化、边界层物理等也进行了改进，并将该模式程序优化为能在计算机工作站和微机上进行业务运行的数值预报系统。试验结果表明，改进的高分辨率模式不论对雨区范围的分布还是对暴雨中心值的预报一般都优于原模式。降水评分的Ｔｓ值高于原模式。
In the article,the fine mesh grid nested numerical prediction model over complex topographic condictions has been improved and developed as a high resolution model with mesh scale 50km in horizontal and 11 levels in vertical. The some of model physical processes,such as cumulus convective parameterization and boundary layer physics, have been improved. And the model has been improved into a numerical prediction operation system that can be operated either in multi-CPU workstation or in micro-computer. The forecast tests indicate the prediction of improved high resolution model is mainly better than original model both in rain areas and in rain storm centres. Ts skill score of precipitation forecasting for the high-resolutions model is higher while mean miss rate to predict precipitation is lower than original model.
出处
《高原气象》
CSCD
北大核心
1996年第1期11-20,共10页
Plateau Meteorology
基金
国家"八.五"攻关项目
关键词
高分辨率模式
数值预报
有限区域
降水预报
High resolution model Operational prediction system Precipitation skill score
