近66年信阳地区日照时数变化特征及其相关因素分析  

Variation Characteristics and Its Related Factors of Sunshine Hours in Xinyang City in Recent 66 Years

作　　者：范宝伟 李啸啸 刘明华 吕蕾 邱燕子 闫军辉 FAN Baowei;LI Xiaoxiao;LIU Minghua;LYU Lei;QIU Yanzi;YAN Junhui(College of Geographic Sciences,Xinyang Normal University,Xinyang 464000,China;Key Laboratory of Climate Change&Environmental Evolution,Xinyang Normal University,Xinyang 464000,China;Research Center of North and South Transition Zone in China,Xinyang Normal University,Xinyang 464000,China)

机构地区：[1]信阳师范学院地理科学学院,河南信阳464000 [2]信阳师范学院气候与环境演变重点实验室,河南信阳464000 [3]信阳师范学院南北过渡带研究中心,河南信阳464000

出　　处：《信阳师范学院学报（自然科学版）》2020年第1期97-101,共5页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(41501051);青海省自然地理与环境过程重点实验室开放基金项目(2018-QZH-K04);河南省重点研发与推广专项项目(182102311036)

摘　　要：利用1951-2016年河南省信阳地区气象站逐月日照时数资料,运用线性回归分析、距平值分析等方法分析了年、季、月日照时数的变化特征,对日照时数变化与部分气候因素、细颗粒物浓度变化进行相关分析.结果表明:1951-2016年信阳地区年日照时数整体以119.66 h/10a速度下降,呈显著下降趋势;年日照时数异常减少的年份为2009年和2012年,2009年年日照时数异常主要受冬季日照时数变化的影响,2012年年日照时数异常主要受春季和冬季日照时数变化的影响;近5年,信阳地区日照时数月变化与细颗粒物浓度月变化呈显著负相关;日照时数较多的月份,细颗粒物浓度相对较小;1951-1971年,水汽压、湿度对日照时数影响比较明显,水汽对太阳辐射的散射、折射及吸收作用直接影响日照时数的变化;2005-2016年,平均风速与日照时数呈显著正相关,平均风速越大,越有利于污染物扩散.Based on the data of monthly sunshine hours from Xinyang Weather Station in Henan Province, the characteristics of annual, seasonal and monthly sunshine hours from 1951 to 2016 are analyzed using linear regression and anomaly analysis. At the same time, variation characteristics of sunshine hours and its relation with some climatic factors and fine particles are also analyzed. The present results show that: the annual sunshine hours in Xinyang area/10 a from 1951 to 2016;the annual sunshine hours decreased anomaly in 2009 and 2012, and in 2009 they were mainly affected by the change of sunshine hours in winter, and in 2012 they were mainly affected by the changes of sunshine hours in spring and winter;the monthly variation of sunshine hours in Xinyang area showed a significantnegative correlation with the monthly variation of particle concentration. Months with relatively more sunshine hours had relatively small fine particle concentration.From 1951 to 1971,the sunshine hours were obviously influenced by the water vapor pressure and humidity, and were directly affected by the scattering, refraction and absorption of water vapor. From 2005 to 2016, the average wind speed was significantly positively correlated with the sunshine hours, and the large average wind speed was conducive to the spread of pollutants.

关 键 词：日照时数 变化特征 气候特征 细颗粒物 

分 类 号：P423.3[天文地球—大气科学及气象学]