摘要
对泸溪县1959年～2011年53年的逐日气象资料进行统计,分析了泸溪县雷暴气候变化特征。分析表明:泸溪县属于多雷区,平均雷暴日数为47.5d;年雷暴日数线性变化呈明显下降趋势,气候倾向率为-4.6d/10a;全年4个季度均有雷暴活动发生,发生的频率以夏、春两季最高;一年中雷暴活跃期出现在3～9月,活跃期平均雷暴日数占全年的85.1%;雷暴初日和终日都呈缓慢提前的趋势。
Basing on the meteorological data from 1959-2011 in Luxi county, the thunderstorms climatic charac- teristics was analyzed. It shows that Luxi County is rich in thunderstorms with the annual average number of thunderstorm days of 47.5.The annual thunderstorm days show a linear downward trend with the climate tendency rate of -4.6d/10a.Thunderstorm can occur in each season with the highest occurrence frequency in spring and summer. Thunderstorms active period in the year appears from March to September, which accounts for 85.1% of the year. The first and last thunderstorms day all show a slow ahead trend.
出处
《气象研究与应用》
2012年第3期74-76,共3页
Journal of Meteorological Research and Application
关键词
雷暴
雷暴日数
气候特征
thunderstorms
number of thunderstorm days
climatic characteristics
