自然资源学报 ›› 2015, Vol. 30 ›› Issue (8): 1367-1377.doi: 10.11849/zrzyxb.2015.08.011

• 资源评价 • 上一篇    下一篇

1961—2012年吉林省日照时数的变化特征及影响因素

刘玉英1, 韦小丽2, 李宇凡2   

  1. 1. 吉林省气象信息网络中心,长春 130062;
    2. 吉林省气候中心,长春 130062
  • 收稿日期:2014-06-17 出版日期:2015-08-15 发布日期:2015-08-15
  • 作者简介:刘玉英(1963- ),女(汉族),辽宁北票人,高级工程师,主要研究方向为气候变化和气候资源开发利用。E-mail: ccliuyuying@126.com
  • 基金资助:
    中国气象局气候变化专项(CCSF201003, CCSF201317)

Variation of Sunshine Duration and Related Driving Forces in Jilin Province during 1961-2012

LIU Yu-ying1, WEI Xiao-li2, LI Yu-fan2   

  1. 1. Jilin Meteorological Information Network Center, Changchun 130062, China;
    2. Climate Center of Jilin Province, Changchun 130062, China
  • Received:2014-06-17 Online:2015-08-15 Published:2015-08-15

摘要: 日照时数变化特征及原因存在区域差异,为了反映日照时数变化特点,论文利用标准正态检验法(SNHT),对47个站点1961—2012年日照时数观测资料进行均一性检验,得到31个均一站点,采用线性趋势分析、Mann-Kendall突变检验、小波分析、相关分析等方法研究了吉林省日照时数的变化特征和影响因素。结果表明:1961—2012年期间,吉林省年日照时数呈现出显著减少的年际变化特征,平均每10 a减少53.9 h,1985年前后吉林省日照时数由明显偏多变为明显偏少;四季日照时数均呈显著减少趋势;近52 a来,吉林省大部分地方日照时数呈减少趋势,中西部地区的东南部和东南部地区的西部为显著减少区。低云量的增加是导致吉林省日照时数减少的主要气象因素;大气污染物排放量增加所引起的气溶胶光学厚度增加对年日照时数减少的长期变化及冬季日照时数的年际变化有显著影响。

Abstract: Variation of sunshine duration and its related driving forces have regional difference. In this paper, annual sunshine data at 47 stations in Jilin Province were collected for performing the homogeneity test using the traditional standard normal homogeneity (SNHT) method. Results showed that 31 of 47 stations have homogeneous data. Based on sunshine duration observations at the 31 stations, the characteristics and the influential factors of sunshine duration change was analyzed by the method of linear trend analysis, Mann-Kendall test and wavelet analysis. Some conclusions were that the annual sunshine duration had significant decreasing trend from 1961 to 2012 with a decreasing rate of 53.9 h/10 a. The annual sunshine duration turned from sufficient to absent around 1985. The sunshine durations in four seasons all significantly decreased. In recent 52 years, the annual sunshine hours in most Jilin Province decreased, and the most significant decrease happened in southeast part of the midwestern area and west part of the southeastern area of the province. The low cloud cover is the main cause of the changes of sunshine duration. The increase of air optical depth caused by the atmospheric pollutants had significant influence on the long-term change of sunshine duration and the interannual variation of sunshine hours in winter.

中图分类号: 

  • P422.1+4