CAJ | 학술논문

选取海南岛18个站点1965～2007年的43 a雷暴日资料,采用经验正交函数分解(EOF)等方法分析了海南岛的雷暴日分布特征.结果表明:海南岛雷暴活动频繁,各市县年平均雷暴日在94 d以上,最多达到了149d,雷暴日空间分布具有明显的区域性,中部以及北部的雷暴日比较多,而在南部雷暴日相对偏少;雷暴日的季节变化明显,冬季极少,夏季时雷暴明显偏多,最高为7月份的22d;另外,雷暴日的年际变化存在明显的准周期16a以及5 a的小震荡周期.
선취해남도18개참점1965～2007년적43 a뇌폭일자료,채용경험정교함수분해(EOF)등방법분석료해남도적뇌폭일분포특정.결과표명:해남도뇌폭활동빈번,각시현년평균뇌폭일재94 d이상,최다체도료149d,뇌폭일공간분포구유명현적구역성,중부이급북부적뇌폭일비교다,이재남부뇌폭일상대편소;뇌폭일적계절변화명현,동계겁소,하계시뇌폭명현편다,최고위7월빈적22d;령외,뇌폭일적년제변화존재명현적준주기16a이급5 a적소진탕주기.
The spatial daily distribution of thunderstorm in Hainan Island were analysed by using Empirical Orthogonal Funetion(EOF) based on daily thunderstorm data from 19 stations for 43 years from 1965 to 2007. The results showed thunderstorms frequented Hainan Island, with thunderstorm days being more than 94 days/year by average for all the cities and counties in Hainan Island and 149 days at maximum. The spatial distribution of the thunderstorm days is obviously regional: more thunderstorm days in the central and northern parts of Hainan Island and relatively fewer in the south. The number of thunderstorm days varied significantly in seasons: small in winter but obviously large in summer with the maximum in July (22 days of thunderstorm). Moreover, there was a quasi period of 16 years and an alternating period of 5 years for interannual change of thunderstorm days.