地理科学 ›› 1984, Vol. 4 ›› Issue (4): 329-334.doi: 10.13249/j.cnki.sgs.1984.04.329

• 论文 • 上一篇    下一篇

北京的大气混浊度

谢贤群   

  1. 中国科学院地理研究所
  • 出版日期:1984-07-20 发布日期:1984-07-20

THE ATMOSPHER1C TURB1D1TY OVER BE1J1NG

Xie Xianqun   

  1. Instituty bf GeOgraphy, Academia Sinica
  • Online:1984-07-20 Published:1984-07-20

摘要: 测量与分析一个地区的大气混浊度,对深入研究该地区的大气污染状况和气候变化趋势有重要意义。世界气象组织(WMO)建议在全球范围内建立大气混浊度监测网,以便对全球的本底污染趋势作出估计。

Abstract: Based on the data of solar radiation measurement of 21 years, the Linke turbidity factor in Beijing district are analysed and its yearly changes and trends are discussed, too, in this paper. It shows that the average value of turbidity factor of 21 years is about 3.25 and Beijing tends to be in the rank of turbid cities. In the yearly changes of atmospheric turbidity factors, the largest turbidity value is in summer, about 3.67, in winter it is the smallest, about 2.89. There are three positive departure values of T in the changes year by year. In the end of 1950’s the positive departure had been affected by local environment of Beijing. In the middle period of 1960’s T increased because of Agung volcanic eruption. Since 1970’s the atmospheric turbidity have been increasing year by year, with the industrial development and the growth of population in Beijing.