摘要
根据开平国家站1961—2019年的逐日气温数据,采用5d滑动平均来进行四季划分,再利用气候倾向率、统计分析、MK检验等方法,对开平市四季长度和气温的变化趋势及突变情况进行分析。结果表明:1961—2019年开平市除了夏季长度呈增长的趋势外,其他季节都表现为缩短,其中秋季减少最为明显。开平市年平均气温的升温趋势明显,上升速度为0.027℃/年;开平市夏季长度对气温的升高有较强的响应,表现为夏季长度和年平均气温具有显著的正相关性,且两者的突变情况一致,都发生在20世纪80年代末。
Based on the 1961-2019 daily air temperature data from a national observation station in Kaiping,annual four seasons are divided with the method of 5 d moving average,and using climatological tendency rate,statistical analysis and Mann-Kendall test,the duration of the four seasons as well as variation tendency and abrupt change of air temperature are studied.The result is shown as follows.Except for summer,which tends to show an increasing duration,all other three seasons of Kaiping are shortening in the period of 1961-2019,with autumn showing the most reduction.Its annual mean air temperature rises significantly at a rate of 0.027℃/year.The duration of city’s summer responds well to the rising of air temperature so that the former correlates positively with the annual mean air temperature in a significant way.They also experienced consistent abrupt changes,both at the end of the 1980 s.
作者
刘俭彤
郭柏成
王成
LIU Jian-tong;GUO Bai-cheng;WANG Cheng(Meteorological Bureau of Kaiping,Kaiping 529300)
出处
《广东气象》
2021年第5期19-22,共4页
Guangdong Meteorology
关键词
气候学
四季长度
突变检验
开平市
climatology
duration of four seasons
abrupt change test
Kaiping
