Correction for hydrometeor attenuation of C band radar data

C band digital weather radar observed data, collected from the Huaihe River Basin Energy and Water Cycle Experiment (HUBEX), are used for the study of correction of hydrometeor attenuation in the Fuyang region. An iterative algorithm is used for the correction scheme. The preliminary study shows that there may be a big difference between the radar observed reflectivity and the corresponding corrected one. Based upon the hourly precipitation data derived by the radar data sampled from the observations at intervals of 10 min and rain gauge recorded hourly precipitation data, it is found that the attenuation correction algorithm gives better results than those from direct observation. It is also shown that the temperature of hydrometeors may strongly affect the results derived from the attenuation algorithm.