Research on retrieving the liquid content of clouds by ground-based microwave radiometer

Using the ground-based microwave radiometer´s brightness temperature to inverse atmospheric profile in sunny day has become increasingly mature. But the research on the inverse of liquid content of clouds have not yet further. This paper used Nanjing´s historical radiosonde data to calculate the liquid content of clouds, to detect the height of the base of clouds by the clouds height meter, used a selected relative humidity at a given height to assess the thickness of clouds, put the brightness temperature measured by microwave radiometer and the surface data as parameters, through linear regression method to get regression coefficients to built the inversion of cloudy model. And compared this model and the other two models with the results calculated by historical radiosonde data respectively. The results show that the liquid content of clouds retrieved by this paper´s model is more consistent with the real value.