桃仙机场2005—2021年冰雹情况统计分析

Statistical Analysis of Hail in Taoxian Airport from 2005 to 2021

利用地面观测数据和欧洲中心1 h再分析资料,统计分析了桃仙机场2005—2021年17年间发生的26次冰雹过程,发现冰雹过程一般发生于午后07:00~08:00(UTC),持续时间5~6min,往往伴有降温、转风过程;冰雹发生与温度层结的分布有关,伴随低层辐合线,800 hPa附近温度线会突然向下波动,涡度层结显示对流强烈。

Based on the ground observation data and the one hour reanalysis data of the European center, 26 hail processes occurred in Taoxian Airport in the 17 years from 2005to 2021 were statistically analyzed. It was found that the hail process generally occurs at 07:00~08:00 p.m.(UTC) and lasts for 5~6 minutes, often accompanied by cooling and wind turning processes. The occurrence of hail was related to the distribution of temperature stratification. With the low-level convergence line, the temperature line near 800 hPa will suddenly fluctuate downward,and the vorticity stratification showed strong convection.