Application Analysis of the Hail Suppression Operation Based on the Improved SCIT Algorithm
Duan Yiping;Xu Yajuan;Zhi Shulin;Jiangxi Meteorological Service Center;State Key Lab of Severe Weather Chinese Academy of Meteorological Sciences;Jiangxi Weather Modification Leading Group Office;Jiangxi Meteorological Station;
Using the new generation weather radar mosaic products and the improved SCIT(The Storm Cell Identification and Tracking) algorithm, the identification and tracking of radar echo of a hail event occurred in north of Jiangxi on March 22 2013 was analyzed. In the improved algorithm, six radar reflectivity factors related to the characteristics of hail clouds were chosen as the artificial hail suppression operation indexes. And the fuzzy logic method was established basing on some experience threshold from artificial hail suppression operation conditions. Through the analysis of the hail event by using the improved SCIT algorithm,the results showed that a total of four hail cloud convection cells were identified, more than the observed three hail fall sites and the identification number of the unimproved method. In addition, the identification positions by the improved algorithm were accordance with the actual sites, which meant that the improved SCIT algorithm was conducive to enhancing the accuracy of the hail suppression operation.