为了揭示在全球气候变暖背景下福鼎地区雷暴气候变化特征,利用福鼎市气象观测站1971-2010年40 a雷暴日数观测资料,采用气候倾向率、气候趋势系数等统计方法进行雷暴气候特征分析.结果表明:福鼎市近40 a年平均雷暴日数为48 d,雷暴日数呈减少趋势,每10a减少2d;季节性显著,夏季雷暴日数占全年雷暴日数56％,8月雷暴日出现最高峰,9月雷暴日急剧减少,逐月平均雷暴日分布与月平均气温、月降水量呈同相单峰形；雷暴初日每10 a推迟4d,雷暴终日每10 a推迟4.4d,雷暴期在增加.%In order to reveal the climatic variation characteristics of thunderstorm in Fuding under global warming, Using the observational thunderstorm data of meteorological station in Fuding during 1971-2010, and the characteristics of thunderstorm were anlyzed by climate trend rate method and climate trend coefficient method. The results show that:①the annual average number of thunderstorm days is 48d in Fuding and the total trend of thunderstorm has been decreased in the recent 40 years,the rate of its climate tendency is 2 d/10 a;② the thunderstorm has the obvious seasonal, about 56% thunderstorms occur in summer, Thunderstorm day is the most in August,and then decreases obviously in September, monthly characteristics of thunderstorm day are similar to those of air temperature and precipitation;③ the first thunderstorm day is significantly delayed 4 d/10 a, the last thunderstorm day is significantly delayed 4. 4 d/10 a,thus the duration of thunderstorm has been slight increased.
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