Cloud Spatial Characteristics Evaluation Based on the Results of Downwelling K-band Radiation Spectra Measurements

A method for evaluation of horizontal size of liquid-drop broken clouds passing through the ground-based microwave radiometer field-of-view is proposed. The method is based on calculating Kolmogorov’s structural function for the registered timeseries of downwelling atmospheric radiation brightness temperature. Forward simulations of cloudy atmosphere downwelling radiation are performed in order to show that the proposed method may be applicable even under conditions of strong fluctuations observed in air temperature and humidity fields.