Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 5 1 2005 10.5194/acpd-5-911-2005 http://www.atmos-chem-phys-discuss.net/5/911/2005/ http://www.atmos-chem-phys-discuss.net/5/911/2005/acpd-5-911-2005.html http://www.atmos-chem-phys-discuss.net/5/911/2005/acpd-5-911-2005.pdf 911 936 2005-02-18 Intercomparison of O₃ profiles observed by SCIAMACHY, ground based microwave and FTIR instruments M. Palm C. v. Savigny T. Warneke V. Velazco J. Notholt K. Künzi J. Burrows O. Schrems Institute of Environmental Physics, University of Bremen, PO Box 330440, D-28334 Bremen, Germany Alfred Wegener Institute for Polar and Marine Research, PO Box 120169, D-27515 Bremerhaven, Germany Ozone profiles retrieved from limb scattering measurements of the SCIAMACHY instrument based on the satellite ENVISAT are compared to ground based low altitude resolution remote sensors. All profiles are retrieved using optimal estimation. Following the work of 5 Rodgers and Connor (2003) the retrievals of the ground based instruments are simulated using the SCIAMACHY retrieval. The SCIAMACHY results and the results of the ground based microwave radiometer in Bremen and Ny Alesund agree within the expected covariance of the intercomparison. There are not enough coincident measurements of the FTIR instrument in order to allow for a conlusive statistical 10 treatment. However, preliminary intercomparison results are presented.