一次历史罕见降温降雪天气成因探析

Probe into the Geneses of a Rare Temperature-dropping and Snowing Weather

利用相关气象资料分析了2007年3月3日08时至3月4日08时出现的历史罕见降温降雪天气现象的成因,提出了前期环流形势和各高度层的物理量指标。

By using the relevant meteorological materials, this paper analyzes the geneses of a rare temperaturedropping and snowing weather from 8：00 am, March 3 to 8：00 am, March 4, 2007, and advances the prophase circulation situation and the physical quantity indexes of each level.