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Spectral Aging Model Applied to Meteosat First Generation Visible Band This publication appears in: Remote Sensing Authors: I. Decoster, N. Clerbaux, E. Baudrez, S. Dewitte, A. Ipe, S. Nevens, A. Blázquez and J. Cornelis Volume: 6 Pages: 2534-2571 Publication Date: Mar. 2014
Abstract: The Meteosat satellites have been operational since the early eighties, creating
so far a continuous time period of observations of more than 30 years. In order to use this
data for climate data records, a consistent calibration is necessary between the consecutive
instruments. Studies have shown that the Meteosat First Generation (MFG) satellites
(1982) suffer from in-?ight degradation which is spectral of nature and is not corrected
by the of?cial calibration of EUMETSAT. Continuing on previous published work by the
same authors, this paper applies the spectral aging model to a set of clear-sky and cloudy
targets, and derives the model parameters for all six MFG satellites (MeteosatDŽ to lj).
Several problems have been encountered, both due to the instrument and due to geophysical
occurrences, and these are discussed and illustrated here in detail. The paper shows how the
spectral aging model is an improvement compared to the EUMETSAT calibration method
with a stability of 1%DŽ% for Meteosatdž to lj, which increases up to 6% for ocean sites
using the full MFG time period.
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