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Volume 7, issue 13
Atmos. Chem. Phys., 7, 3639-3662, 2007
https://doi.org/10.5194/acp-7-3639-2007
© Author(s) 2007. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Atmos. Chem. Phys., 7, 3639-3662, 2007
https://doi.org/10.5194/acp-7-3639-2007
© Author(s) 2007. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  11 Jul 2007

11 Jul 2007

Bias determination and precision validation of ozone profiles from MIPAS-Envisat retrieved with the IMK-IAA processor

T. Steck1, T. von Clarmann1, H. Fischer1, B. Funke2, N. Glatthor1, U. Grabowski1, M. Höpfner1, S. Kellmann1, M. Kiefer1, A. Linden1, M. Milz1, G. P. Stiller1, D. Y. Wang3, M. Allaart4, Th. Blumenstock1, P. von der Gathen5, G. Hansen6, F. Hase1, G. Hochschild1, G. Kopp1, E. Kyrö7, H. Oelhaf1, U. Raffalski8, A. Redondas Marrero9, E. Remsberg10, J. Russell III11, K. Stebel6, W. Steinbrecht12, G. Wetzel1, M. Yela13, and G. Zhang1 T. Steck et al.
  • 1Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany
  • 2Instituto de Astrofísica de Andalucía, Granada, Spain
  • 3Physics Department, University of New Brunswick, Canada
  • 4KNMI (Royal Netherlands Meteorological Institute), De Bilt, The Netherlands
  • 5Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany
  • 6Norwegian Institute for Air Research (NILU), Polar Environmental Centre, Tromsø, Norway
  • 7FMI-Arctic Research Centre, Sodankylä, Finland
  • 8Swedish Institute of Space Physics (IRF), Kiruna, Sweden
  • 9Instituto Nacional de Meteorologia (INM), Santa Cruz de Tenerife, Spain
  • 10Atmospheric Sciences Competency, NASA Langley Research Center, Hampton, USA
  • 11Department of Physics, Hampton University, Hampton, USA
  • 12Deutscher Wetterdienst (DWD), Hohenpeißenberg, Germany
  • 13Instituto Nacional de Técnica Aeroespacial (INTA), Torrejón de Ardoz, Spain

Abstract. This paper characterizes vertical ozone profiles retrieved with the IMK-IAA (Institute for Meteorology and Climate Research, Karlsruhe – Instituto de Astrofisica de Andalucia) science-oriented processor from high spectral resolution data (until March 2004) measured by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) aboard the environmental satellite Envisat. Bias determination and precision validation is performed on the basis of correlative measurements by ground-based lidars, Fourier transform infrared spectrometers, and microwave radiometers as well as balloon-borne ozonesondes, the balloon-borne version of MIPAS, and two satellite instruments (Halogen Occultation Experiment and Polar Ozone and Aerosol Measurement III). Percentage mean differences between MIPAS and the comparison instruments for stratospheric ozone are generally within ±10%. The precision in this altitude region is estimated at values between 5 and 10% which gives an accuracy of 15 to 20%. Below 18 km, the spread of the percentage mean differences is larger and the precision degrades to values of more than 20% depending on altitude and latitude. The main reason for the degraded precision at low altitudes is attributed to undetected thin clouds which affect MIPAS retrievals, and to the influence of uncertainties in the water vapor concentration.

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