摘要
采用香港1947~2013年的闪电资料分析该地区近67a的闪电气候特征,得出香港的年平均闪电日数为45.5d,总体有逐年增多的趋势,且存在22~32a、10~17a、3~5a三类时间尺度周期。其中,大时间尺度周期变化最明显但有局部性,中时间尺度周期在1970~1990年变化较弱,小时间尺度几乎占据整个研究时域。月平均闪电日数主要集中在4~9月,占全年总数的92.35%。
Using lightning data from 1947 to 2013 in Hong Kong to analyze the lightning climate characteristics of the region in the past 67 years,it is concluded that the annual average lightning day in Hong Kong is 45.5d,and the overall trend is increasing year by year,and there are 22~32a,10~17a,3~5a three types of time scale periods.Among them,the large time scale period change is the most obvious but local,the medium time scale period is weaker from 1970 to 1990,and the small time scale almost occupies the entire research time domain.The monthly average lightning days are mainly concentrated in April to September,accounting for 92.35%of the total.
作者
庞焕华
韩仕强
陆金凤
PANG Huan-hua;HAN Shi-qiang;LU Jin-feng(Liuzhou Meteorological Bureau,Liuzhou 545002,China;Xingtang County Meteorological Bureau,Shijiazhuang 050600,China)
出处
《价值工程》
2019年第22期269-271,共3页
Value Engineering
关键词
闪电日数
气候特征
趋势变化
小波分析
lightning days
climatic characteristics
trend change
wavelet analysis
