摘要
本方法利用积分模式中预报高度场的倾向值和初始时刻的客观分析场的叠加作为最终高度场的预报值,而不是直接预报高度值本身。这样可以减少初始化、垂直内插等误差。初步试验结果表明:本方法预报平均高度场与实况的均方羞从2.19减少到1.93位势什米,预报场与实况的相关系数从原来的0.879提高到0.941。
A simple method to improve the forecast accuracy of geopotential height in numerical models is described here. The method combines the objectively analysed height field and model-produced height tendency to form a final forecast rather than forecasts the height itself directly. The preliminary results of six tests show that the RMS error of height forecast has been reduced from 2.91 to 1.93 ten meters and correlation coefficient increased from 0.879 to 0.941.
出处
《气象》
CSCD
北大核心
1990年第7期3-7,共5页
Meteorological Monthly
