摘要
从理论上分析气溶胶后向散射系数和质量浓度之间的关系,利用米散射激光雷达和颗粒物质量监测器振荡天平(tapered element oscillating microbalance,TEOM)分别测量了合肥市郊近地面大气气溶胶的后向散射系数和PM10的质量浓度。在分析其相关性的基础上,利用非线性最小二乘法拟合的方法建立了利用后向散射系数获取颗粒物质量浓度的经验公式,并对利用公式反演的结果进行了实验验证。同时还分析了合肥市郊春季气溶胶的日变化特征,以期对合肥市大气污染总量控制方案及对策提供科学依据。
The relationship between backscattering coefficient and mass concentration of aerosol is analyzed in theory. Aerosol backscattering coefficients and mass concentrations in rural area of Hefei were measured simultaneously with lidar and tapered element oscillating microbalance. Based on the correlation of backscattering coefficients and mass concentrations, using the method of nonlinear least squares, an empirical formula was developed and the inversion results were demonstrated. At the same time, diurnal variations of mass concentrations of PM10 were presented and its cause was discussed, which can provide scientific base for air pollution control strategy and methodology in Hefei city.
出处
《大气与环境光学学报》
CAS
2008年第3期187-192,共6页
Journal of Atmospheric and Environmental Optics
基金
半导体激光云高自动测量系统与示范(GYHY200706023)
