关键词: 辐射传输模式, 吸收系数, 毫米波

Abstract: By means of groundbased reception of atmospheric emission, we could get the atmospheric parameters such as temperature profile, water vapour, liquid water, ozone and other atmospheric trace gases. Using atmospheric noise reception of 1.35cm water vapour absorption band and 8mm window band, we could obtain the atmospheric total water vapour content and liquid water content of cloud. In this paper by way of calculating atmospheric radiation brightness temperature at three microwave bands, it could be demonstrated that 3mm band is more sensitive to the water vapour content and liquid water content than 1.35cm and 8mm bands, especially for water vapour content in clear sky. Developing 3mm band radiometry is advantageous to remote sensing of atmospheric water. Continuous measurements with high accuracy are important in determining forecasting on the mesoscale and heat balance in climatology

Key words: radiation transfer model, absorption coefficient, millimeter wave