Abstract

The DIAL technique (Differential Absorption Lidar) is widely used to measure concentrations of trace constituents in the atmosphere and derive concentration profiles or distributions. Several authors have applied the technique to obtain one or two dimensional concentration distributions of air pollutants such as SO₂, NO, NO₂ and O₃ [1,2,3]. An important application of the DIAL technique is model validation. In this study, a mobile scanning NO₂ DIAL system is used to measure NO₂ concentrations at a freeway in order to validate the NO₂ emission parameter of the Dutch ’CAR’ model (Calculation of Air pollution from Road traffic); this model is used to estimate air pollution from traffic for comparison with regulatory limits.

© 1991 Optical Society of America