Study Of The Cloud Shortwave Radiative Forcing On Summer In Different Area Of China By Using Satellite And Routine Data

The cloud shortwave radiative forcing was studied by using GMS satellite data and the routine data in the typical 9 stations in the paper. The regression equation to estimate the cloud shortwave radiative forcing was established, the result can be used to estimate the cloud shortwave radiation forcing, thus remedying the shortage of radiation data.The surface global radiative flux which occurs for clear skies was computed by using MODTRAN3 model and sounding data and that which actually occurs with cloudiness was from the routine data. The cloud shortwave radiative forcing was obtained by comparing two kinds of radiative flux ahead. Analyzed the relationship between the cloud shortwave radiative forcing and the surface net radiative flux, the results were show by means of chart. The satellite grey values were get form the GMS satellite data. Analyzing the relationship between the cloud shortwave radiative forcing and the satellite grey values, established five regression equations and discussed them, select the best pattern, by which we can estimate the cloud shortwave radiative forcing.