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Analysis on the Mesoscale Characteristics of a Hailstorm Case Based on Radar and Satellite Data
Pages: 59-63
Year: Issue:  3
Journal: Journal of Ocean Technology

Keyword:  hailmesoscale featuresDoppler weather radarsatellite data;
Abstract: This study has analyzed a case of hailstorm over the Jiangsu-Anhui area on 28 April 2015 by using Doppler Radar data and hourly FY2 D TBB satellite data. The results show that:(1) Based on the Doppler Radar data, it is found that the hailstorm stemmed from a supercell storm with strong intensity and long lifetime. The convective storm generated at 13:00 BJT and grew to a supercell storm until 16:45 BJT. After 22:02 BJT the supercell storm weakened gradually as it moved toward southeast coast. In addition, the 0 ℃ and-20℃ layers were located at the height of 3.7 km and 7.0 km, respectively. The region of reflectivity intensity up to 50 dBZ stretched upward beyond the-20℃ layer, which indicates high occurrence probability of strong hailstorm.(2)Based on hourly FY2 D TBB satellite data, a mesoscale convective storm generated at 13:00 BJT, then weakened and moved to sea at 24:00 BJT. After that it dissipated on the sea. Corresponding the hail region, the minimum TBB reached to-60℃ at the center of cold cloud and the hailstorm tended to generate in the area with larger TBB gradient.
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