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Volume 5, issue 2
Earth Syst. Sci. Data, 5, 349-363, 2013
https://doi.org/10.5194/essd-5-349-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Changes in the vertical distribution of ozone – the SI2N...

Earth Syst. Sci. Data, 5, 349-363, 2013
https://doi.org/10.5194/essd-5-349-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

  02 Dec 2013

02 Dec 2013

Harmonized dataset of ozone profiles from satellite limb and occultation measurements

V. F. Sofieva1, N. Rahpoe2, J. Tamminen1, E. Kyrölä1, N. Kalakoski1, M. Weber2, A. Rozanov2, C. von Savigny3, A. Laeng4, T. von Clarmann4, G. Stiller4, S. Lossow4, D. Degenstein5, A. Bourassa5, C. Adams5, C. Roth5, N. Lloyd5, P. Bernath6,7, R. J. Hargreaves6, J. Urban8, D. Murtagh8, A. Hauchecorne9, F. Dalaudier9, M. van Roozendael10, N. Kalb10, and C. Zehner11 V. F. Sofieva et al.
  • 1Finnish Meteorological Institute, Helsinki, Finland
  • 2Institute of Environmental Physics, University of Bremen, Bremen, Germany
  • 3Institute of Physics, University of Greifswald, Greifswald, Germany
  • 4Karlsruhe Institute of Technology, Institute for Meteorology and Climate Research, Germany
  • 5Institute for Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
  • 6Department of Chemistry, University of York, York, UK
  • 7Department of Chemistry & Biochemistry, Old Dominion University, Norfolk, VA, USA
  • 8Chalmers University of Technology, Department of Earth and Space Sciences, 41296 Gothenburg, Sweden
  • 9Université Versailles St-Quentin, UPMC University Paris 06, CNRS/INSU, LATMOS-IPSL, 78280 Guyancourt, France
  • 10Belgian Institute for Space Aeronomy (IASB-BIRA), Brussels, Belgium
  • 11ESA/ESRIN, Frascati, Italy

Abstract. In this paper, we present a HARMonized dataset of OZone profiles (HARMOZ) based on limb and occultation measurements from Envisat (GOMOS, MIPAS and SCIAMACHY), Odin (OSIRIS, SMR) and SCISAT (ACE-FTS) satellite instruments. These measurements provide high-vertical-resolution ozone profiles covering the altitude range from the upper troposphere up to the mesosphere in years 2001–2012. HARMOZ has been created in the framework of the European Space Agency Climate Change Initiative project.

The harmonized dataset consists of original retrieved ozone profiles from each instrument, which are screened for invalid data by the instrument teams. While the original ozone profiles are presented in different units and on different vertical grids, the harmonized dataset is given on a common pressure grid in netCDF (network common data form)-4 format. The pressure grid corresponds to vertical sampling of ~ 1 km below 20 km and 2–3 km above 20 km. The vertical range of the ozone profiles is specific for each instrument, thus all information contained in the original data is preserved. Provided altitude and temperature profiles allow the representation of ozone profiles in number density or mixing ratio on a pressure or altitude vertical grid. Geolocation, uncertainty estimates and vertical resolution are provided for each profile. For each instrument, optional parameters, which are related to the data quality, are also included.

For convenience of users, tables of biases between each pair of instruments for each month, as well as bias uncertainties, are provided. These tables characterize the data consistency and can be used in various bias and drift analyses, which are needed, for instance, for combining several datasets to obtain a long-term climate dataset.

This user-friendly dataset can be interesting and useful for various analyses and applications, such as data merging, data validation, assimilation and scientific research.

The dataset is available at http://www.esa-ozone-cci.org/?q=node/161 or at doi:10.5270/esa-ozone_cci-limb_occultation_profiles-2001_2012-v_1-201308.

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