高原牧区大雪天气初步分析

Preliminary Analysis of Heavy Snow in Plateau Pastoral Area

利用兰州区域气象中心重要天气个例库资料，用统计分析和波谱分析的方法，对高原牧区大雪期间的５００ｈＰａ环流背景、形势特征作了普查和分析，提出了牧区大雪的预报着眼点。

The paper has studied 500 hPa circulation background and pattern features with statistics analysis and spectrum analysis, and presented the forecast point of heavy snow in pastoral area. The data be used are taken from case base of important weather in certral meteorology Station of Lanzhou .