本文已被：浏览 931次 下载 1014次
中文摘要: 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。
中文关键词:
Abstract: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.
keywords:
文章编号： 中图分类号： 文献标志码：
基金项目:
| Author Name | Affiliation |
引用文本：
潘在桃,王鹏云,徐宝新,任荣彩,1990.一种改进短期数值预报中高度场精度的简单方法[J].气象,16(7):3-6.
,1990.A simple method to improve geopotential height accuracy in numerical forecasts[J].Meteor Mon,16(7):3-6.
潘在桃,王鹏云,徐宝新,任荣彩,1990.一种改进短期数值预报中高度场精度的简单方法[J].气象,16(7):3-6.
,1990.A simple method to improve geopotential height accuracy in numerical forecasts[J].Meteor Mon,16(7):3-6.