九江两次可观测固态降水过程总结

Summary of Two Observable Solid Precipitation Processes in Jiujiang

通过分析常规实况资料以及EC-thin预报模式对比分析,对2018年12月7日20时至9日08时和2019年2月23日08时至14时发生在九江两次可观测降雪的成因进行对比分析,得出在降水充足的条件下,500hPa温度场成雪条件充足,中低层及地面温度不能使得固态降水完全融化时,到地面就形成可观测固态降水。

By analyzing conventional live data and comparative analysis of EC-thin forecasting models, the causes of two observable snowfalls occurred in Jiujiang from 20:00 to 9:00 on December 7, 2018 and from 08:00 to 14:00 on February 23, 2019 were compared. It is concluded that under the condition of sufficient precipitation, the 500hPa temperature field has sufficient snow conditions, and the middle and lower layers and the ground temperature cannot completely melt the solid precipitation, and the observed solid precipitation is formed on the ground.