摘要
统计分析了乌鲁木齐地区4个代表站点1971—2007年的雷暴气候特征,结果表明:雷暴日山区多,市区和达坂城区少;37a来各地的雷暴日数随着时间的推移均呈逐渐减少趋势,各地雷暴平均活动期出现在4—9月,最多出现在7月,一日当中雷暴主要发生在午后14时至前半夜02时,各地雷暴持续时间以30min之内为多,各地的雷暴活动方位以偏北方向为最少,山区的雷暴持续期最长。该研究为今后进一步做好本地区防雷减灾工作提供了一定的参考依据。
Based on the data of the four representative sites during 1971--2007,the thunderstorm climatic characteristics of the Urumqi region were statistically analyzed, The results showed that thunderstorm days were more in mountain areas than in Urban and Dabancheng areas, the days of thunderstorm were gradually decreased since 37 years, the regional thunderstorm activity average period happened in Apr. to Sep., and the most was in Jul., they mainly occurred from 14：00 to 2：00 during the day and the most of them with the duration of less than 30 minutes The least activities of thunderstorm were in northerly direction, and the longest duration happened in mountain areas. This studying provides reference for lightning protection and disaster reduction in local area in future.
出处
《沙漠与绿洲气象》
2009年第1期27-30,共4页
Desert and Oasis Meteorology
关键词
雷暴
气候特征
防雷减灾
thunderstorms
climatic characteristics
lightning protection and disaster reduction
