丹东地区雷暴的气候特征研究

利用丹东地区4个气象观测站1960—2009年月雷暴日数资料,统计分析了近50年丹东地区的雷暴特征,并对产生雷暴的天气进行日、月和年的统计分析和演变分析。结果表明：该地区雷暴天气的时空分布特征十分明显,季节变化特征和年际变化规律都比较特殊。雷暴次数在空间分布上可分为3个区域：北部山区（宽甸县、凤城市北部）,中部丘陵（凤城南部、浪头站）,南部沿海（东港市）;其中北部山区雷电密度最大,自南向北雷暴频数明显增多,南部沿海发生雷暴的几率比较稳定,接近平均值。

Study on the Characteristics of Thunderstorms in Dandong Area

Taking thunderstorms number per month statistics of four meteorological observation stations from 1960 and 2009 in Dandong area as materials, the nearly fifty years characteristics of thunderstorms were analyzed, and the thunderstorm clays were analyzed in day, month and year way. The results showed that the time and space distribution characteristics of thunderstorms in Dandong area were obvious, the seasons change and the international year change characteristics were special. Spatial distribution of thunderstorm number can be divided into three areas： northern mountainous region （Kuandian, northern of Fengeheng）, central central hill district（southern of Fengeheng, Langtou station）, southern coastal areas（Donggang city）. The density of thunderstorm in north was the largest, the frequency of thunderstorms increased from south to north, the frequency of thunderstorms occur in southern coastal areas were stable, and closed to averages.