Rainfall estimation and ground clutter rejection with dual polarization weather radar

摘要

Conventional radars, used for atmospheric remote sensing, usually operate ata single polarization and frequency to estimate storm parameters such asrainfallrate and water content. style="line-height: 20px;">Because of the high variability of the drop size distribution conventionalradars do not succeed in obtaining detailed information because they justuse horizontal reflectivity. style="line-height: 20px;">The potentiality of the dual-polarized weather radar is investigated, inorder to reject the ground-clutter, using differential reflectivity. style="line-height: 20px;">In this light, a radar meteorology campaign was conducted over the city ofRome (Italy), collecting measurements by the polarimetric Doppler radarPolar 55C and by a raingauge network. style="line-height: 20px;">The goodness of the results is tested by comparison of radar rainfallestimates with raingauges rainfall measurements.