Tropospheric and stratospheric BrO and NO2 columns derived by use of satellite observations and 3D CTM FinROSE
Satellite communication systems
Air mass factor (AMF)
Slant column densities (SCD)
Stratospheric chemistry transport models
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Total slant column densities (SCD) of NO2 and BrO from the GOME ERS-2 satellite nadir measurements have been split into stratospheric and tropospheric loadings. In order to obtain tropospheric vertical column densities (VCD) two key challenges arise: the quantification of the stratospheric column and the calculation of the tropospheric air mass factor (AMF). Stratospheric NO2 and BrO columns are derived at the instrument's overpass time by means of a stratospheric chemistry transport model, i.e. FinROSE-etm, to take into account the stratospheric variability of these trace gases. In order to gain the trace gas tropospheric column the stratospheric slant column is subtracted from the DOAS slant column retrieval.
CitationPost, P.; Backman, L.; Thölix, L.; Van Roozendael, M.; Fayt, C. (2006). Tropospheric and stratospheric BrO and NO2 columns derived by use of satellite observations and 3D CTM FinROSE. , Proceedings of the First Atmospheric Science Conference, Issue 628,