用FY-2C静止气象卫星资料计算射出长波辐射通量密度  

Calculation of Outgoing Longwave Radiation Flux with FY-2C Data

作　　者：吴晓[1] 

机构地区：[1]中国气象局中国遥感卫星辐射测量和定标重点开放实验室国家卫星气象中心,北京100081

出　　处：《气象科技》2007年第4期474-479,共6页Meteorological Science and Technology

摘　　要：介绍用FY-2C静止气象卫星资料估算射出长波辐射（OLR）的方法,包括FY-2C OLR反演模式的建立、由FY-2C窗区通道1、窗区通道2、水汽通道遥测数据计算OLR的详细步骤;给出了FY-2C OLR产品的精度：与相近时刻的NOAA卫星OLR产品相对比,两颗星OLR产品的等值线图基本完全一致,图上绝大部分偏差0-10 W/m,最大偏差20 W/m;并给出了FY-2C OLR产品的实例及其初步应用。The method for calculating OLR （Outgoing Longwave Radiation） with FY-2C geostationary satellite data is described, including the establishment of the FY-2C OLR inverse model and the detailed procedures of calculating OLR by using the measurements in the FY-2C window and water vapor channels. The quality of FY- 2C OLR products is discussed by comparing with NOAA OLR products nearly at the same time on the OLR iso- line charts. The difference between the two products ranges from 0 to 20 W/m, with the maximum difference being 20 W/m. An example of FY-2C OLR products and application is also given.

关 键 词：射出长波辐射 窄波段辐射 辐射通量密度 通道辐射率 等效亮度温度 

分 类 号：P414.4[天文地球—大气科学及气象学]