Examining the consistency of precipitation rate estimates between the TRMM and GPM Ku-band radars

For over 20 years, precipitation measurement has continued with spaceborne radars including the Precipitation Radar (PR) operating at 13.8 GHz on Tropical Rainfall Measuring Mission and Ku-band (KuPR) 13.6 Global Measurement mission core satellite. PR KuPR have essentially same hardware designs algorithm to make standard products (PRV8 KuPRV06, respectively). The surface rate estimates (R) related variables are statistically compared between for a common observation area (within 35°N 35°S) period (April September 2014). Due difference in sensitivity, total amount recorded by is larger than approximately 1.3%. heavy precipitation, shows smaller measured radar reflectivity factor (Zm) R KuPR. Zm affected attenuation it KuPR, as frequency slightly higher. corrected almost However, adjustment PR, which results R. Direct comparison during matchup cases demonstrates similar results.