雷暴日数

结果表明：41年来，长江三峡库区年平均雷暴日数较多，一般为34～45d，其中库区西北部和中南部为多雷区；年际变化大，最多年比最少年一般偏多27～61d；

The results show that the mean annual number of thunderstorm days are 34 ~ 45d , and interannual thunderstorm variability is large , the difference between the maximum and minimum of annual thunderstorm days is 27 ~ 61d .

雷击地闪密度与雷暴日数的关系分析

The analysis on the relationship between density of ground lightning strokes and the number of thunderstorm days

持续型（秋季型）的ELNino事件可能会引起上海地区年雷暴日数异常偏多，而少雷暴年则多为ENSO（ELNino/SouthernOscillation）冷暖事件的更替年。

Durative El Nino events are likely to induce the abnormal increment of the thunderstorm frequency while fewer thunderstorms occur in the period of ENSO ( El Nino / Southern Oscillation ) transformation years .

河南省雷暴日数时空分布的非均一性特征

Non-uniformity of spatiotemporal distribution of annual thunderstorm days in Henan Province

基于PC&CCA方法的雷暴日数资料序列延长模式试验

Datum extension of meteorological thunderstorm days based on PC-CCA

结果表明：陕西省年平均雷暴日数为25.3天，呈现南北多、中部少的分布特点；

The main results are as follows : The annual averaged days of thunderstorm in Shaanxi province are 25.3 days .

整个库区年雷暴日数的变化均存在不同程度的减少趋势，气候倾向率为1～7d/10a；

For the region as a whole , the annual number of thunderstorm days have a decreasing trend with trend ratios reaching - 1 ~ - 7d / 10a .

雷暴日数南多北少，20世纪80年代中期以前8-10a的周期显著，其总趋势是减少的。

Thunderstorm days were more in the south and less in the north , the period of 8-10 years was remarkable before the middle of the 1980s and the general trend of thunderstorm days was decreasing .

季节性显著，冬季无雷暴，盛夏雷暴日数占全年雷暴日数的2/3左右。

About 2 / 3 thunderstorms occur in summer and none in winter .

利用1958-2005年白银地区4测站观测资料，采用线性趋势估计、子波分析等数理统计方法，对白银地区雷暴初、终日及雷暴出现日数气候变化特征进行分析。

The climatic variation feature of the first and the last dates for thunderstorm occurring and thunderstorm days in the middle part of Gansu province was analyzed by using observations of 4 stations in Baiyin from 1958 to 2005 based on statistics methods of linear tendency estimate and wavelet analysis .

结果表明：深圳市属于雷暴多发区，53a平均雷暴日数为68.2d；

The result indicates that Shenzhen locates in the high frequency zone of thunderstorm , 53a average days of thunderstorm are 68.2d ;

高原上的雷暴云较其它地区容易产生冰雹，冰雹日数与雷暴日数比值最大为0.36。泸沽湖：美丽留痕

Thunderstorm clouds in plateau easily grow into hail . LAKE ON THE PLATEAU

分析结果表明：陕西雷暴天气30年来呈减少趋势，雷暴日数关中中部最少，陕北北部府谷最多。

Results indicate that the thunderstorm days show decreasing trend since 1970 , the thunderstorm days in a year are the least in the central part of Shaanxi and the most in Fugu in the north of northern Shaanxi .

根据江苏省1961~2003年逐日气象资料，通过数理统计方法分析得出：江苏各地全年有96%~98%雷暴日出现在3~9月，平均年雷暴日数为27~36天。

Based on the meteorological data from 1961 to 2003 in Jiangsu Province , the statistical analysis indicates : 96 % to 98 % thunder days occurs in March and September , and the number of thunder days is 27 to 36 days in a normal year .

利用1986～2000年成都地区的雷暴资料，分析得到：成都地区的多年平均雷暴日数在24～30之间，属雷暴较多的地区之一。

Using the observational thunderstorm data between 1986 and 20000 the spatial and temporal distribution of the thunderstorms in Chengdu area are analyzed . The results show that the annual average number of thunderstorm days is between 24 and 30 in Chengdu area which is among those with more thunderstorms .