摘要
利用常规观测资料和中尺度数值模式WRF的输出产品,对2010年12月14—15日发生在江西的雨雪过程进行了分析。结果表明,微物理参数化方案输出的物理因子可以较好地揭示本次过程的雨雪转换;在雨转雪阶段,由于中低层冷空气南移较强,没有形成逆温,因此未能形成冻雨,而是由雨转为降雪天气。
A heavy snow process, which occurred in 14--15 December 2010 in Jiangx, has been analyzed by using conventional observation data and the outputs of WRF model. The results show that the physical factors may reasonably display the conversion of rain and snow processes. During this process no temperature inversion occurred, or temperature inversion was weak, which could not effectively form freezing rain. In addition, the intersection of cold and warm air could easily trigger collision, transformation, and development among ice crystals snow crystal and water vapor, which leaded to an increase in the latter term.
出处
《气象与减灾研究》
2011年第3期30-35,共6页
Meteorology and Disaster Reduction Research
基金
江西省防灾减灾研究基金课题(编号:GCX200918)
