青海省雪灾气候预测的地气图方法

Di-Qi Map Method for Predicting Snow Disaster of Qinghai Province

通过对青海省1960年以来全省各气象站的雪灾资料统计分析,结合青海省南部(下称青南)地区8月份的地气形势,发现二者之间有很好的相关:夏季地热涡和正鞍形场多对应冬季为重雪灾;地冷涡和负鞍形场多对应冬季为轻灾或无灾。春夏季上游的中强地震可加强冬季的雪灾。由此表明,利用地气图方法可以较好地预测青海省的雪灾。

A predicting method for snow disaster of Qinghai Province is introduced in this {paper.} By using the data of snow disaster and the ground temperature at deep level of all weather stations in Qinghai province since 1960, the spatial and temporal characters of the ground temperature at the deep level in Qinghai in August are analyzed. The August earth thermal vortex positions of South Qinghai are also analyzed, and the high correlation between the snow disaster and these earth thermal vortexes distribution is found. So Di-qi map method may be used for predicting the snow disaster of Qinghai Province.