Reconstruction of the surface temperature fields according to the fragmentary data of remote sensing |
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| Authors: | E F Vasechkina |
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| Institution: | (1) University of Poitiers, UMR 6532 of CNRS, Earth Sciences Building, 40 Av. Recteur Pineau, 86022 Poitiers Cedex, France;(2) Duke Engineering France, 77210 Avon, France;(3) University of Paris VI, UMR 7619 of CNRS, Box 123, 4. Pl Jussieu, 75252 Paris Cedex 05, France |
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| Abstract: | We propose a gap-filling method for the data of remote sensing of the hydrophysical and biological characteristics of the
water surface. The proposed method of reconstruction is based on the representation of the fields of surface characteristics
as the sums of certain numbers of empirical orthogonal functions (EOF) making the largest contributions to the total variance
of the field. According to the fragmentary data obtained as a result of processing of the satellite images for the summer
season, we construct estimates of the mean field and of the four-dimensional space covariance function of the surface temperature
of the Black Sea. The coefficients of expansion are computed by the method of least squares or determined with the help of
a genetic searching algorithm. The results of numerical experiments show that the proposed method is quite promising for applications
in the problems of gap filling in the available satellite data. |
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