关键词: 辐射传输, 模拟计算, 吸收带

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

Key words: radiation transfer, simulation calculation, absorption band