title: Monitoring atmospheric pollution levels by laser ranging systems.
mesh_terms: D000397:Air Pollution / Q000032:analysis*; D003374:Coumarins; D004864:Equipment and Supplies; D007834:Lasers; D008433:Mathematics; D008722:Methods; D009585:Nitrogen Dioxide / Q000032:analysis; D013050:Spectrometry, Fluorescence; D013053:Spectrophotometry; D013055:Spectrophotometry, Infrared
chemical_list: D003374:Coumarins; D009585:Nitrogen Dioxide