Range-resolved measurements of atmospheric ozone using a differential-absorption CO2 laser radar

Abstract
A 9.4‐μm CO2 laser radar was used to obtain ozone measurements in the atmosphere with the differential‐absorption method. Concentrations of ozone were measured in the horizontal interval from 0.5 to 2 km with 300‐m range resolution. The measurement uncertainty varied from about ±15 ppb at 0.5 km to about ±40 ppb at 1.5 km. Experimental results showed good agreement between the ozone concentrations measured with the laser radar and those measured by point monitors at various sites.