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On the improvement of NO<sub>2</sub> satellite retrievals – aerosol impact on the airmass factors

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Table 2. Aerosol parameters (single scattering albedo (ω 0 ), ˚ Angstr ¨om exponent (α) and aerosol optical depth (AOD)) taken from each of the references mentioned that were used to define the aerosol vertical profile (with extinction coefficients) for th
Fig. 1. NO 2 airmass factor vertical variation for 3 scenarios: no aerosol (red), and an aerosol layer with SSA of 0.93 extending from the surface to 1.0 km with an optical depth (AOD) of 0.1 (grey) and 0.9 (blue)
Fig. 2. NO 2 profiles from surface to 10.0 km used in the SCIATRAN settings for the airmass calculations: (red) box profile of 1.0 km; (green) average urban (“Avg Urb”) and (blue) rural are based on CHIMERE model results.
Fig. 3. Phase functions at 440 nm for fine (blue) and coarse (grey) aerosol determined for 4 dis- dis-tinct aerosol types: Urban (Urb), Biomass Burning (BB), Desert Dust (DD) and Oceanic
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