Brightness Temperature Simulation System and Errors Structure Analysis

To meet the need of model development and assimilation development,we design a brightness temperature simulation system based on radiative transfer model, which combine the characteristics of atmosphere, land surface and the sensor. We use the model directly in satellite data assimilation system(SDAS) to correct its static parameters and improve the understanding. The errors structure analysis is performed on errors introduced by topography,atmosphere,uncertainties in the parameterizations of the forward model.