Seminar on Physics and Chemistry of the Atmosphere (Abstract)

Julian Meyer-Arnek
Deutsches Zentrum für Luft- und Raumfahrt - Deutsches Fernerkundungs-Datenzentrum
Oberpfaffenhofen

17.12.2004, 13.00 c.t.
Room S3120

During the biomass burning seasons, enhanced tropospheric trace gas columns of ozone, NO₂ and HCHO are derived from satellite measurements. For the episode of September 1997, a qualitative and quantitative analysis of the distribution of the various trace gases emitted by the different sources was performed. This study shows that emissions from biomass burning are either transported westwards at lower altitudes or are lifted up due to convection and underly long-range transport. The overall distribution of tropospheric NO₂ columns is captured by the model. The formaldehyde columns derived from GOME measurements can be explained by the combination of biomass burning emissions and releases from biogenic emissions.

At DLR-DFD ("Deutsches Fernerkundungs-Datenzentrum") measurements from TOMS, GOME, SCIAMACHY and MIPAS are routinely assimilated into the ROSE/DLR chemistry and transport model to derive near-real-time synoptic maps of relevant trace gases. To derive tropospheric NO₂, its stratospheric column, which is derived from the ROSE/DLR model and the total column derived from the SCIAMACHY measurements is used. Problems applying this method will be highlighted.