RTTOV快速辐射传输模式应用研究进展
The Application and Research Advances of RTTOV Fast Radiative Transfer Mode
刘乐 1李耀东2
作者信息
- 1. 中国人民解放军理工大学气象海洋学院,江苏南京211101;北京航空气象研究所,北京100085
- 2. 北京航空气象研究所,北京100085
- 折叠
摘要
RTTOV(Radiative Transfer for TOVS)是近期出现的一个比较优秀的快速辐射传输模式.该研究介绍了RTTOV工作的原理和方法,从提高数值预报模式准确度和模拟卫星辐射亮温2个方面出发,综述了RTTOV模式的应用研究进展.结果显示,利用RTTOV将卫星资料直接同化到数值预报模式中,能显著提高数值预报的准确度;同时,RTTOV能够较好地模拟晴空条件下卫星接收到的辐射亮温,有云条件下的模拟值与实测值之间的误差大于晴空条件.利用RTTOV模拟得到的亮温进行仿云图制作,在一定程度上可以判断云体和云系的移动及发展变化,进而改善气象预报和保障业务.
Abstract
RTTOV (Radiative Transfer for TOVS) is a good fast radiative transfer model.The working principle and method of RTTOV was introduced, the application and research advances were reviewed from two aspects of improving the numerical forecast's accuracy and simulating satellite radiation TBB.The results showed that using RTTOV to assimilate satellite data directly into the numerical prediction model can obviously improve the accuracy of numerical prediction;meanwhile, RTTOV can better simulate satellite accepted TBB under clean sky condition, the error between simulated value and measured value under the cloud condition is greater that in clear sky condition.Using TBB can make satellite cloud images, determine the movement and change of clouds, cloud system in a certain extent, further improve weather forecasting and security business.
关键词
RTTOV/快速辐射传输模式/同化/正演/亮温Key words
RTTOV/Fast radiative transfer mode/Assimilation/Forward modeling/TBB引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据