呼伦贝尔市雷暴的时空分布特征及类型分析

利用呼伦贝尔市地区8个气象观测站1971—2000年的雷暴观测资料,统计分析了雷暴的时空分布特征并总结呼伦贝尔市雷暴的一般天气类型。结果显示：呼伦贝尔市雷暴日数的空间分布呈现出大兴安岭山地多、平原低地次之、草原地带较少的特点;各站的雷暴年际变化较大,有很强的季节性特点,集中出现在4—10月,夏季6—8月的雷暴次数占80%以上,发生雷暴的峰值时段在14—17时,雷暴日数具有较强年代际变化,呈明显的波动下降的特点;呼伦贝尔市雷暴天气有4种基本天气类型。

Temporal and Spatial Distribution Characteristics and Type Analysis of Thunderstorm in Hulun Buir City

Using thunderstorm observational data of 8 stations from1971 to 2000 in Hulunbeir region, the temporal and spatial distribution characteristics of thunderstorm were statistically analyzed, and the weather type of thunderstorm were summarized in Hulun Buir city. The results showed： the spatial distribution characteristics of thunderstorm days showed that the Da Hinggan Mountains are more, lowland plains take second place, grassland areas are the lest. The annual change of thunderstorm in each station was very larger, and had strong seasonal characteristic, concentrated in the April to October, the thunderstorm frequency from June to August in summer was more than 80%, the peak time of occurrence thunderstorm was at 14：00-17：00; The thunderstorm days shows strong decadal variation and obvious decrease feature in mode of fluctuant. There were main four thunderstorm weather types in the Hulun Buir city.