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Validation of Envisat Tracer measurements using balloon borne whole air sampler data

Andreas Engel(1)

(1) University of Frankfurt, Altenhoeferallee 1, 60438 Frankfurt, Germany


Andreas Engel(1), Harald Bönisch(1), Tanja Möbius(1), Stefan Sala(1), Ingeborg Levin(2) and Katja Grunow(3)

Institut fuer Atmosphaere und Umwelt, J. W. Goethe Universitaet Frankfurt, Frankfurt, Germany 2, Institut fuer Umweltphysik, Ruprecht – Karls Universitaet Heidelberg, Heidelberg, Germany 3Institut fuer Meteorologie, Freie Universitaet Berlin, Berlin, Germany

The University of Frankfurt operates a balloon borne cryogenic whole air sampler, which has been flown at different latitudes over the past years to provide validation data for the Envisat chemistry instruments.

All the major greenhouse gases (CO2, CH4, N2O, SF6 and CFCs) as well as a large suite of ozone depleting gases (chlororfluorocarbons, hydrochlorofluorocarbons, halons, and other halocarbons) are measured on the samples using different gas chromatographic and mass spectrometric methods. All values are reported relative to internationally calibrated standards.

We will present the available the data and compare with the available Envisat data. The emphasis will be on MIPAS-Envisat data. Next to the direct comparison we will also present comparisons based on trajectory mapping, i.e. forward and backward trajectories are calculated from the measurement points of the balloon and matches with MIPAS observations are calculated up to 5 day before and after our measurements.