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

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。

RTTOV （Radiative Transfer for TOVS） is a g^od fast radiative transfer model. The working principle and method of RTrOV was introduced, the application and research advances were reviewed from two aspects of improving the numerical forecast ＇ s accuracy and simula- ting satellite radiation TBB. The resuhs showed that using RTrOV to assimilate satellite data directly into the numerical prediction model can obviously improve the accuracy of numerical prediction ; meanwhile, RTFOV can better simulate satellite accepted TBB under clean sky condi- tion, 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 forecas- ting and security business.