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《SCIENTIA ATMOSPHERICA SINICA》 1996-01
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Numerical Study of Microwave Radiative Transfer of Precipitating Squall Line

Lin Longfu(Air Force Institute of Meteorology,Nanjing 211101) Lu Daren and Liu Jinli(Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029)  
The relationship between upwelling microwave radiances from precipitating cloud and geophysical parameters was investigated when the output of a 3-D cloud physical model was used as the input of a 3-D radiative transfer model.The preliminary results indicate that if the radiative interactions existing between adjacent clouds are not taken into account in the upwelling radiance modeling,the simulated brightness temperature will underestimate the satellite observed one.The magnitude of underestimation is related to the lower part structure of the cloud for low frequency channels.For high frequency channels,the extent affected varies with the ice content of the upper layer of the cloud.When the ice content is small in the upper layer of the cloud,simulated Tb will underestimate the observed one and the magnitude of underestimation is larger than that for low frequency channels.When the ice content is large enough in the upper layer of the cloud,simulated Tb Will overestimate the observed one,but the magnitude of overestimation is small.
【Fund】: 国家自然科学基金
【CateGory Index】: P426.51
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