气溶胶消光系数与大气能见度、气候变化直接相关。采用532 nm 脉冲激光腔衰荡光谱仪实现对气溶胶消光系数的测量，气溶胶消光仪的检测限为0.3 Mm^-1，并采用CO₂、氟利昂R134 纯气以及不同浓度的NO₂气体对消光仪进行全量程验证、校准。在此基础上，与积分浊度仪、黑碳仪开展气溶胶消光系数现场比对测量，测量数据符合良好。

The Aerosol extinction coefficient is of crucial importance for atmospheric visibility and climate change.The aerosol extinction coefficient is measured based on the cavity ring down spectrometer using 532 nm pulsed laser.The detection limit of the aerosol extinction spectrometer is 0.3 Mm^-1. Pure CO₂, pure Freon R134, and different concentration NO₂ are used for full scale calibration. Comparative field measurement of aerosol extinction using aerosol extinction spectrometer, nephelometer and aethalometer are carried out, and the data are in good agreement.