A Comparative Analysis of Atmospheric Attenuation between Coastal and Inland Stations of India For A Ka-Band Cloud Radar

摘要

Precise computation of atmospheric attenuation for Millimeter wavelength radars is quite important for accurate probing of the cloud hydrometeors. Hence in the present study the atmospheric attenuation for 35GHz zenith looking experimental prototype cloud radar developed by Society for Applied Microwave Electronics Engineering and Research (SAMEER) is computed for three tropical stations (Mumbai, Delhi and Jodhpur). Coastal station Mumbai has shown higher and dry inland station Jodhpur has shown lowest values of attenuation. Peak month to month variation in the attenuation was observed in the respective months of monsoon onset (Mumbai-June; Delhi and Jodhpur -July) of the three stations. Minimum values of attenuation occur in January (Dry month) and maximum values occur in the August or September month, when the air is saturated with monsoon rains over the station.