A long duration Baiu' frontal event with mixed stratiform and embedded convective rain was used for the inter-comparison. The 2D-video disdrometer data from this long event were used to measure the drop size distributions (DSD) and the mean axis ratios which were in turn used in developing the polarimetric-based radar retrieval algorithms (Do from Zdr, and R from Kdp) as well as the attenuation-correction methods. The wind profiler data were processed using an iterative retrieval method (involving repeated convolutions) for arbitrary shaped raindrop size distributions.
Results of the inter-comparison showed excellent agreement amongst all three instruments for the initial stratiform period, both in terms of Do and R. During the convective rain events, the COBRA-retrieved Do showed reasonable agreement with the 2DVD derived Do considering the highly fluctuating DSD. The estimated rainfall rate from the three instruments compared very well for the entire selected period of 12 hours despite considerable differences in the sampling volumes. The Kdp-based rain rate estimator derived in this environment was very close to previously published studies at C-band in a tropical environment.