Darmstadt 2008 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
UP: Fachverband Umweltphysik
UP 7: Poster: Satellitengestützte Messungen
UP 7.2: Poster
Tuesday, March 11, 2008, 16:30–19:00, Poster B1
Effect of Horizontal Gradients in Limb Measurements of Scattered Sunlight — •Janis Puķite1, Sven Kühl1, Tim Deutschmann2, Ulrich Platt2, and Thomas Wagner1 — 1Max-Planck-Institut für Chemie, Mainz, Germany — 2Institut für Umweltphysik, University of Heidelberg, Germany
Limb measurements provided by the SCanning Imaging Absorption spectrometer for Atmospheric CHartographY (SCIAMACHY) on the ENVISAT satellite allow retrieving stratospheric profiles of various trace gases on a global scale. We use a two step method for the retrieval in the UV/VIS spectral region: First, DOAS is applied on the spectra, yielding slant column densities (SCDs) of the respective trace gases. Second, the SCDs are converted into vertical concentration profiles applying radiative transfer modeling. An important point is the effect of horizontal gradients on the profile retrieval. This is of special interest in Polar Regions, where photochemistry can highly vary along the long absorption paths. We investigate the influence of horizontal gradients by applying 3-dimensional radiative transfer modeling.