1966～2015年山东省曹县日照变化特征分析
Analysis on Sunshine Variation Characteristics of Caoxian County in Shandong Province during 1966-2015
王秀丽 1窦坤 2高学芹 3丁媛媛 2任崇勇1
作者信息
- 1. 山东省曹县气象局,山东曹县274400
- 2. 山东省菏泽市气象局,山东菏泽274000
- 3. 山东省寿光市气象局,山东寿光262700
- 折叠
摘要
利用曹县1966～2015年月日照时数观测资料,采用9点二次平滑、累计距平、线性倾向估计、曼-肯德尔检验等统计方法,分析了近50 a来曹县日照时数的变化特征及影响日照减少的可能气象因素.结果表明,近50 a曹县日照时数变化与山东省的变化趋势一致,减少趋势非常明显,日照时数减少幅度为156.59 h/10 a;夏季和秋季减少极明显,冬季、春季显著减少;5月份减少趋势最大.1982年是曹县日照减少突变的时间点,也是日照时数由正距平向负距平的转折点.
Abstract
By using monthly sunshine hours data in Caoxian County during 1966-2015,adopting statistical methods such as 9 secondary smooth,cumulative anomaly,linear tendency estimation,Mann Kendall test,the variation characteristics of sunshine hours in Caoxian in recent 50 years and possible meteorological factors affecting sunshine reduction were analyzed.The results showed that the change of sunshine duration in Caoxian in recent 50 years was the same as that in Shandong Province,the decline tendency was obvious as 156.59 h/10 a;the reduction was extremely significant in summer and autumn,and was significant in winter and spring;the reduction tendency was maximum in May.The year of 1982 was the time point of reduction mutation of sunshine hours in Caoxian,and it was also the turning point from positive anomaly to negative anomaly.
关键词
日照时数/变化特征/气象因素/山东省曹县Key words
Sunshine hours/Variation characteristics/Meteorological factors/Caoxian County in Shandong Province引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据