巴彦浩特极端沙尘天气预报指标总结

Summary of Weather Forecast Indicators for Extreme Sand and Dust in Bayanhot

统计分析巴彦浩特1953年—2018年沙尘暴资料,结果显示巴彦浩特极端沙尘天气总体呈现下降趋势。造成极端沙尘天气的环流形势可分为冷锋型、蒙古气旋与冷锋混合型2种类型,并从气候背景、环流特征、层结条件、热力条件、湿度条件等方面,总结了极端沙尘出现的定量预报指标。

Statistical analysis of sandstorm data in Bayanhot from 1953 to 2018 shows that the extreme sandstorm weather in Bayanhot presents a downward trend.The circulation situation of extreme dust weather can be divided into two types:cold front type,Mongolia cyclone and cold front mixed type.The quantitative forecast indexes of extreme dust weather are summarized from the aspects of climate background,circulation characteristics,stratification conditions,thermal conditions and humidity conditions.