The characteristics and variation trends of temporal and spatial distribution of thunderstorms in the area of Linyi

Xiaoxiao Zhang, Hongqin Pei
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引用次数: 4

Abstract

Based on the observation of the thunderstorm days at ten weather stations in the area of Linyi, the characteristics of temporal and spatial distribution of thunderstorm days from 1962 to 2009 has been analyzed. The results indicate that the thunderstorm days are varied in different regions of the area, but the differences are small. The thunderstorm days decreased significantly by 3.4 days for every 10 years. The thunderstorm days for the whole region decreased sharply while the thunderstorm days in local region increased a little more. The month of July has the most thunderstorms and most of which are citywide storms, then the August followed. The decreasing tendency of thunderstorms is significant in summer and autumn and not obvious in spring. After 1972, the total number of thunderstorm days in Linyi decreased suddenly.
临沂地区雷暴的时空分布特征及变化趋势
通过对临沂地区10个气象站1962—2009年雷暴日数的观测,分析了临沂地区1962—2009年雷暴日数的时空分布特征。结果表明:雷暴日数在不同区域有所差异,但差异不大;雷暴日数每10年显著减少3.4天。全区雷暴日数急剧减少,局地雷暴日数略有增加。7月是雷暴最多的月份,其中大部分是全市范围的风暴,然后是8月。夏季和秋季雷暴减少趋势显著,春季不明显。1972年以后,临沂市雷暴日数急剧减少。
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