石家庄市56a日照时数变化特征及影响因素分析  

Variation characteristics of sunshine duration in Shijiazhuang City and analysis of its influencing factors

作　　者：廖颖慧[1] 齐晓华[1] 崔倩 边智[3] 

机构地区：[1]河北省石家庄市气象局,石家庄050081 [2]河北省沧州市气象局,沧州061001 [3]山东省泰安市气象局,泰安271000

出　　处：《气象水文海洋仪器》2013年第2期45-48,共4页Meteorological,Hydrological and Marine Instruments

摘　　要：本文采用线性倾向估计法、完全相关系数法、Mann-Kendall突变检验法对石家庄市56a日照时数的气候变化特征和影响因子进行了分析。结果表明:石家庄市年日照时数减少趋势显著;四季中,冬季日照时数减少速率最大,其次是夏季和秋季,春季日照时数减少速率最小;各月日照时数减少速率最大为1月,最小为4月;年和季日照时数均发生了明显的突变现象;年日照时数与霾、总云量、雾、相对湿度负相关,与能见度正相关;影响石家庄市日照时数减小的主要气象要素是能见度和霾。By means of the linear trend estimation method, correlation coefficient method and complete Mann-Kendall mutation test, this paper analyzes climate variation characteristics and impact factors of sunshine hours in Shijiazhuang during the past 56 years. The results show that the annual sunshine hours decreased significantly in Shijiazhuang. In the four seasons, the sunshine hours were maximally reduced in winter, followed by summer and autumn, while it is minimally reduced in spring. The maximum reduction of sunshine duration happened in January with minimum reduction in April. The seasonal and annual sunshine hours presented obvious mutation phenomenon. The annual sunshine hours were negative correlated with haze, fog, cloud amount and relative humidity, while it was positive related with visibility. The main meteorological elements that affected sunshine duration in Shijiazhuang were visibility and haze.

关 键 词：日照时数 变化特征 突变 影响因子 

分 类 号：P467[天文地球—大气科学及气象学]