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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 21, issue 7
Ann. Geophys., 21, 1645–1652, 2003
https://doi.org/10.5194/angeo-21-1645-2003
© Author(s) 2003. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 21, 1645–1652, 2003
https://doi.org/10.5194/angeo-21-1645-2003
© Author(s) 2003. This work is distributed under
the Creative Commons Attribution 3.0 License.

  31 Jul 2003

31 Jul 2003

An efficient algorithm for the large-scale smoothing of scattered data retrieved from remote sounding experiments

D. Fussen D. Fussen
  • Institut d’Aéronomie Spatiale de Belgique, Brussels, Belgium

Abstract. We present a new algorithm for smoothing/interpolation of two-dimensional fields applicable to noisy data observed at scattered sites. The technique is based on a special statistics allowing one to simultaneously minimize the fit residual and the correlation between residuals of adjacent points. The principle of the method is first explained in the 1-D case and then extended to the 2-D case by adjunction of a regularization operator. The method is compared with different algorithms (Loess-Renka, Biharmonic Spline and kriging) in three test cases related to remote sounding of the Earth’s atmosphere by space-borne experiments.

Key words. Atmospheric composition and structure (evolution of the atmosphere; instruments and techniques; general or miscellaneous)

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