Locally adjusted rainfall estimation using specific differential phase for Korea

Weather radars have become a popular tool for meteorological applications such as quantitative precipitation estimation (QPE) with high spatiotemporal resolution. Especially, in the last decade, QPE performance has been improved by introduction of dual polarization technology. As becoming able to measure the differential reflectivity, specific differential phase, and cross-correlation coefficient, reliability has been significantly improved compared to the conventional reflectivity-based method. Some of the polarimetric parameters have technical advantages that the specific differential phase is immune to radar calibration errors, attenuation in precipitation, and partial blockage of the radar beam, for example.