鹤岗市夏季一次暴雨天气过程分析

Analysis a Thunderstorm of Hegang In Summer

利用云图、多普勒雷达回波、观测资料、天气图、物理量场等,对鹤岗市夏季的一次暴雨天气过程进行了分析,研究了此次暴雨天气过程的天气系统、水汽条件、不稳定度和动力触发机制,分析了该天气系统的演变情况、物理量场的配合的应用情况。结果表明:地面低压和冷空气的共同影响、水汽向暴雨区的输送和辐合、对流层较强的上升运动,为暴雨产生提供了动力和热力条件,暴雨主要由强对流天气造成。

August 25, 2009 Hegang among the emergence of precipitation and weather, the strength of the city has greatly Hegang since the flood season of the most serious one. August 24 Heilongjiang Province began to shoot at high altitude, the rainfall will not stand in the small amount of rain to the level within the 25th at short Forecast analysis had been decentralized to body, has been the main trunk high altitude North, the system weakened. The day 20 cold turbo South support vortex cloud of a sudden increase in standard convection clouds, the Hegang of heavy rainfall and thunderstorm weather, 6 hours rainfall of 37.6 ram, the most heavy rains more than the 19.3 mm per hour. In this process visual impression that the satellite cloud map is very difficult to see rainstorm signs. With its population of the first month, no measure convection cloud formation of the convection is relatively weak. Why are the weak convection, will have a board to heavy rains and storms into the mechanism is what this article use diagnosis methods and explore the Council to rain of weather school characteristics, and hopes that such a rainstorm warning provide valuable ideas.