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

D. Fussen (1)

1 BIRA-IASB - Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique

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.

Domaines: Océan, Atmosphère; Sciences de la Terre

D. Fussen. An efficient algorithm for the large-scale smoothing of scattered data retrieved from remote sounding experiments. Annales Geophysicae, 2003, 21 (7), pp.1645-1652. ⟨hal-00317131⟩