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塔克拉玛干沙漠腹地雷电活动特征

         

摘要

利用塔克拉玛干沙漠腹地的塔中气象站1996—2010年地面观测资料对该地区的雷暴和闪电特征进行了分析。结果表明:塔中地区年平均雷暴日数为9.3 d,年平均闪电日数为2.7 d。塔中地区4月开始出现雷暴和闪电,7月达到最高值,10月至翌年3月之间无雷暴和闪电发生,塔中地区雷暴平均初日为6月1日,平均终日为8月5日。塔中地区雷暴多出现在午后至凌晨,并以30 min以内的短时雷暴为主,雷暴出现的最多方位是W和N。%The characteristics of thunderstorm and lightning at the Taklimakan desert hinterland area(Tazhong weather station) were analyzed by using of the meteorological observational data during 1996-2010.The results show as follows: the annual mean days number of thunderstorms and lightning at the Tazhong area was 9.3 and 2.7d respectively;thunderstorms and lightning occurred mainly from April to September,and mostly in July;there were almost no thunderstorms and lighting from late October to the next March;the average first date of thunderstorm is 1st of June,while average ending date was 5th of August;the thunderstorms occurred mainly from afternoon to midnight.The thunderstorms at the Tazhong area were mostly short-term less than 30 minutes and their most directions were in west and north.

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