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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/amt-2017-391
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
22 Nov 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Measurement Techniques (AMT).
Airborne Lidar Measurements of Aerosol and Ozone Above the Canadian Oil Sands Region
Monika Aggarwal1, James Whiteway1, Jeffery Seabrook1, Lawrence Gray1, Kevin Strawbridge2, Peter Liu2, Jason O’Brien2, Shao-Meng Li2, and Robert McLaren3 1York University, Centre for Research in Earth and S pace Science, Toronto, M3J 1P3, Canada
2Evironment and Climate Change Canada, Air Quality P rocesses Research Section, Toronto, M3H 5T4, Canada
3ork University, Centre for Atmospheric Chemistry, Toronto, M3J 1P3, Canada
Abstract. Aircraft based lidar measurements of atmospheric aerosol and ozone were conducted to study air pollution from the oil sands extraction industry in northern Alberta. Significant amounts of aerosol were observed in the polluted air within the surface boundary layer, up to heights of 1 km to 1.5 km above ground. The ozone mixing ratio measured in the polluted boundary layer air was equal to or less than the background ozone mixing ratio, in the range of 10 ppbv to 35 ppbv. On one of the flights, the lidar measurements detected a layer of forest fire smoke above the surface boundary layer in which the ozone mixing ratio had a maximum value of 70 ppbv. Measurements of the linear depolarization ratio in the aerosol backscatter were obtained with a ground based lidar and this aided in the discrimination between the separate emission sources from industry and forest fires. The retrieval of ozone abundance from the lidar measurements required the development of a method to account for the interference from the substantial aerosol content within the surface boundary layer.

Citation: Aggarwal, M., Whiteway, J., Seabrook, J., Gray, L., Strawbridge, K., Liu, P., O’Brien, J., Li, S.-M., and McLaren, R.: Airborne Lidar Measurements of Aerosol and Ozone Above the Canadian Oil Sands Region, Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2017-391, in review, 2017.
Monika Aggarwal et al.
Monika Aggarwal et al.
Monika Aggarwal et al.

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Short summary
Aircraft based lidar measurements of atmospheric aerosol and ozone were conducted to study air pollution from the oil sands extraction industry in northern Alberta. The ozone mixing ratio measured in the polluted boundary layer air was equal to or less than the background ozone mixing ratio, in the range of 10 ppbv to 35 ppbv. The lidar measurements detected a layer of forest fire smoke above the surface boundary layer in which the ozone mixing ratio had a maximum value of 70 ppbv.
Aircraft based lidar measurements of atmospheric aerosol and ozone were conducted to study air...
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