4) AIRS can significant increase the retrieval accuracy introposphere middle ? up level and tropopause, in the troposphere lower, especially near thesurface, the accuracy is not ideal enough;

• 4)AIRS反演的大气温度在对流层顶和中上层具有较高的精度,在对流层低层,尤其是近地面反演精度不够理想;