天气在线产品在哈尔滨机场冷涡雷暴中的运用

Application of global forecasting system on cold vortex thunderstorms prediction in Harbin airport

本文统计了2005—2009年6月冷涡雷暴发生时冷涡系统的位置及移动路径,得出冷涡位于43-51°N,110-132°E,且500hPa形势场较弱、稳定少动,在冷涡的发展或衰退阶段,哈尔滨机场可出现连日雷暴;并用德国数值预报产品对冷涡雷暴分析,得出数值预报的形势场、抬升指数、K指数、垂直速度等,对提前预报冷涡雷暴有很好的指示作用。

This paper statistics about the location and movement of cold vortex when the thunderstorms occurred in June during 2005 to 2009. There would be thunderstorms in the developing and decaying stage of cold vortex that is weaker and more stable on 500 hPa when it arrived at between 43-51°N and 110-132°E. Cold vertex thunderstorms are analyzed by German numerical forecast product that provides a reference for cold vertex thunderstorms prediction from the following numerical forecast, such as the situation of numerical forecast, uplifting index,K index and vertical speed etc.