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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 18, issue 6
Ann. Geophys., 18, 666–678, 2000
https://doi.org/10.1007/s00585-000-0666-x
© European Geosciences Union 2000
Ann. Geophys., 18, 666–678, 2000
https://doi.org/10.1007/s00585-000-0666-x
© European Geosciences Union 2000

  30 Jun 2000

30 Jun 2000

Statistical interpolation of ozone measurements from satellite data (TOMS, SBUV and SAGE II) using the kriging method

B. J. S. Tranchant2,*,1 and A. P. Vincent2,1 B. J. S. Tranchant and A. P. Vincent
  • 1Département de physique, Université de Montréal, C.P. 6128, Succ. centre-ville, Montréal, Québec H3C 3J7, Canada
  • 2Centre de Recherche en Calcul Appliqué , 5160 Boul. Décarie, Bureau 400, Montréal, Québec, H3X 2H9, Canada
  • Correspondence to: B. J. S. Tranchant
  • e-mail: Benoit.tranchant@cerfacs.fr
  • *Present address: Centre Européan de Recherche et de Formation Avancée en Calcul Scientifique, 42 av. Gaspard Coriolis 31057 France

Abstract. This study demonstrates that ordinary kriging in spherical coordinates using experimental semi-variograms provides highly usable results, especially near the pole in winter and/or where there could be data missing over large areas. In addition, kriging allows display of the spatial variability of daily ozone measurements at different pressure levels. Three satellite data sets were used: Total Ozone Mapping Spectrometer (TOMS) data, Solar Backscattered UltraViolet (SBUV), and the Stratospheric Aerosol and Gas Experiment (SAGE II) ozone profiles. Since SBUV is a nadir-viewing instrument, measurements are only taken along the sun-synchronous polar orbits of the satellite. SAGE II is a limb-viewing solar occultation instrument, and measurements have high vertical resolution but poor daily coverage. TOMS has wider coverage with equidistant distribution of data 
(resolution 1° × 1.25°) but provides no vertical information. Comparisons of the resulting SBUV-interpolated (column-integrated) ozone field with TOMS data are strongly in agreement, with a global correlation of close to 98%. Comparisons of SBUV-interpolated ozone profiles with daily SAGE II profiles are relatively good, and comparable to those found in the literature. The interpolated ozone layers at different pressure levels are shown.

Key words: Atmospheric composition and structure (middle atmosphere - composition and chemistry) - Meteorology and atmospheric dynamics (middle atmosphere dynamics)

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