摘要
根据呼和浩特地区雷暴日观测资料,经过统计分析,发现51年来呼和浩特市年雷暴日数总体上呈现出递减趋势,气候倾向率为-1.31 d/10 a;清水河地区年雷暴日数呈现逐年递增趋势,气候倾向率为0.55 d/10 a;和林县年雷暴日数呈现逐年递减趋势,气候倾向率为-2.40 d/10 a。小波分析结果表明:呼和浩特市雷暴日存在4.7 a左右周期的年际变化和2.3 a的短周期的变化。M-K突变检验结果显示:1984、1986年为呼和浩特市年雷暴日数的突变年;1961、1972、2008年为清水河地区年雷暴日数的突变年;1961、2005、2007年为和林县年雷暴日数的突变年。
According to the statistical analysis of thunderstorm day observation data in Hohhot area, the annual thunderstorm day had a decreasing trend during the past 51 years in Hohhot city with the climate tendency rate of - 1.31 d/10 a, the annual thunderstorm day had a rising trend in Qingshuihe region with the climate tendency rate of 0.55 d/10 a, while the annual thunder- storm day had a declining trend in Helin county with the climate tendency rate of - 2.40 d/10 a. The wavelet analysis results showed that the annual thunderstorm day in Hohhot city changed with the long cycle of about 4.7 years and the short cycle of about 2.3 years. M - K mutation test results revealed that the mutation years of annual thunderstorm day were 1984 and 1986 in Hohhot city, 1961, 1972 and 2008 in Qingshuihe region, and 1961, 2005 and 2007 in Helin county.
出处
《江西农业学报》
CAS
2013年第2期79-82,共4页
Acta Agriculturae Jiangxi
关键词
呼和浩特
雷暴日
气候特征
小波分析
M-K检验
Hohhot
Thunderstorm day
Climate characteristics
Wavelet analysis
M- K test
作者简介
刘正源（1990-），男，内蒙古呼和浩特人，研究方向：雷电灾害风险评估。
通讯作者：姜苏。
