Monitoring Snow Cover with TOVS Data

The methods of detecting cloud and monitoring snow cover in clean sky are put forward by using the spectral difference of MSU-1 (Microwave radiometer CH1, the central frequency 50.31 GHz)﹑HIRS/2-8 (High resolution infrared radiometer CH8, central wavelength 11.10 μm)﹑HIRS/2-19 (central wavelength 3.70 μm) and HIRS/2-20 (Central wavelength 0.70 μm) of TOVS. The snow cover charts of the snow processes for eastern China in Jan. 1993 and the eastern Tibet Plateau in Jan. 1991 with the method mentioned above are in accord with the observational data.