【摘要】 文章报道的是用太阳光谱方法测量成都地区NO2浓度的实验研究,使用CCD光学多道分析器采集成都市区和西岭雪山的太阳光谱,以大气上界太阳光谱为参考,对五个分立光谱段以最小二乘法进行数据拟合,应用差分吸收原理解谱,获得了成都市区和西岭雪山NO2浓度。成都市区NO2浓度(垂直柱体密度)在3.1×1016至5.8×1016(molecule.cm-2)之间,西岭雪山的NO2浓度在0.7×1016至1.0×1016(mole-cule.cm-2)之间。随大气温度的上升,NO2浓度有上升趋势。更多还原

【Abstract】 In the present paper,a new improved method for measuring NO₂ concentration of atmosphere by using differential（optical） absorption spectroscopy of solar spectrum was reported.The sample solar spectra were collected in Chengdu city and Xiling Mountain respectively by a CCD optical multi-channel analyzer.With the upper atmosphere solar spectrum as the reference spectrum,by fitting the sample spectrum and the reference spectrum using least-square method in five spectrum ranges,the various NO₂ concentrations（vertical column density） of 3.1×10¹⁶ to 5.8×10¹⁶(molecule·cm^-2)in Chengdu city and 0.7×10¹⁶ to 1.0×10¹⁶(molecule·cm^-2)in Xiling Mountain were obtained respectively.The NO₂ concentrations of atmosphere showed an increasing tendency with the rising temperature.更多还原