940nm水汽通道反射率计算试验  

COMPUTING TEST ON THE REFLECTANCE IN 940 nm WATER VAPOUR CHANNEL

作　　者：黄意玢[1] 董超华[1] 刘志权[1] 潘宁[1] 

机构地区：[1]国家卫星气象中心,北京100081

出　　处：《应用气象学报》2002年第4期413-421,共9页Journal of Applied Meteorological Science

基　　金：FY-3气象卫星预研究课题资助

摘　　要：利用近红外波段大气与辐射的相互作用解决用红外波段不容易遥测低层水汽的问题。选用 940nm水汽弱吸收带进行通道反射率计算试验 ,分析其对不同环境参数的敏感性。结果表明 ,940nm附近通道的辐射信号携带了整层大气水汽信息 ,有可能用来获取大气水汽总量。Based on the interaction between atmosphere and radiance in the near infrared band,conducted is the remote sensing of low-level water vapor, a problem that is hard to solve through the infrared band. The reflectance in 940 nm channel, which is in a weak water vapor absorption spectral band, is calculated, and its sensitivities to various environmental parameters are analyzed. The results show that signals from channels in the 940 nm band carry water vapor information from the whole atmosphere. The water vapor amount can be probably retrieved from it.

关 键 词：水汽通道 反射率 敏感性试验 大气 辐射 环境参数 

分 类 号：P435[天文地球—大气科学及气象学]