塔克拉玛干沙漠腹地雷电活动特征

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9.3d，年平均闪电日数为2.7d。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30min以内的短时雷暴为主，雷暴出现的最多方位是W和N。

Characteristics of Thunderstorms and Lightning at the Taklimakan Desert Hinterland

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.