Journal article

Ozone flux determination with a shot per shot DIAL instrument during the MEDCAPHOT field campaign

A combined measurement of O3 concn. and wind speed by lidar is presented, which permits a flux detn. of this pollutant. Measurements were obtained using a shot per shot differential absorption lidar (DIAL) system in which each return is recorded, stored, and treated allowing the study of the temporal evolution of the signal. O3 and wind range resolved measurements are key variables of simulations used to analyze photochem. smog episodes. Results demonstrated that the usual detn. of static O3 concns. can be replaced by measurement of the dynamic variable, O3 flux, when using a shot per shot method. This represents an advance over the classical hardware averaging DIAL approach by taking advantage of the information contained in the shot to shot evolution of the lidar signals which are used simultaneously for O3 and wind profiling.


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