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Global comparisons of total O3 columns from SCIAMACHY retrieved with Weighting Function DOAS (WFDOAS) Algorithm to OMI, GOME WFDOAS and ground-based measurements

Astrid Bracher(1), Lok N. Lamsal(2), Mark Weber(3), Klaus Bramstedt(3) and John P. Burrows(3)

(1) University of Bremen, P.O. Box 330440, 28334 Bremen, Germany
(2) University of Bremen, P.O.B. 330440, 28334 Bremen, Germany
(3) University of Bremen, POB 330440, 28334 Bremen, Germany


The new satellite instruments SCIAMACHY (SCanning Imaging Absorption SpectroMeter for Atmospheric CHartographY) on ENVISAT launched in March 2002 and OMI (Ozone Monitoring Instrument) on AURA, launched in July 2004 deliver global data sets of total ozone columns. Global stratospheric ozone columns from 2004-2005 derived from these satellite instruments are compared to data of their predecessor GOME (Global Ozone Monitoring Experiment) on ERS-2 and to ground-based data from the Brewer-Dobson network in order to detect biases between these data sets. The comparisons are also analysed for dependencies to total ozone, solar zenith angle, seasons and latitudes. Data sets for SCIAMACHY and GOME are retrieved using the weighting function DOAS algorithm (WFDOAS; Version 1.0 for both instruments). For OMI the operational product is used. Results help to understand how these different global total ozone data sets can be linked together for ozone trend studies.


Full paper

Workshop poster

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry