摘要
利用多波段太阳光度计观测资料,采用光谱消光法,计算2007年兰州市采暖期大气气溶胶光学厚度、Angstrom浑浊度系数和波长指数。分析表明:兰州市2007年冬季与历史同期相比,气溶胶光学厚度较小,浑浊度较低,且多为细粒子。对气溶胶光学厚度与能见度进行了分析、拟合,表明二者变化趋势相反,近似呈指数递减关系。
Using the sun photometer data, the aerosol optical depth, turbidity coefficient β and wavelength exponent α of Lanzhou in the heating period in 2007 were calculated. The results show that the aerosol optical depth and turbidity coefficient are smaller than those in the same historical period and most of atmospheric aerosols are fine particles. The aerosol optical depth and visibility were also analyzed, showing that both of the change trends are just opposite to each other and the relation appears to be in the trend of exponential decrease.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第3期39-44,共6页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金项目(40675078)
国家重点基础研究发展规划项目(2006CB400501)
关键词
太阳光度计
光学厚度
浑浊度系数
波长指数
能见度
兰州市
sun photometer
aerosol optical depth
turbidity coefficient
wavelength exponent
visibility
Lanzhou City
