The GODFIT (GOME direct fitting) algorithm: A new approach for total column retrieval
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Discipline
Earth and related Environmental sciences
Subject
Computer simulation
Data reduction
Ozone
Remote sensing
Ultraviolet spectrometers
Weather satellites
GOME direct fitting (GODFIT)
Model simulation
Radiative transfer
Scatter
Algorithms
Audience
Scientific
Date
2005Metadata
Show full item recordDescription
We present a new direct fitting algorithm for retrieval of total column amounts from remote sensing UV/visible spectrometers. The GODFIT algorithm for GOME total ozone makes a single fit for the vertical column; there is no DOAS slant-column fitting and AMF conversion. GODFIT relies on a 1-1 column-profile map for ozone; all forward model simulations are done from scratch using the LIDORT linearized radiative transfer model. The algorithm includes a new molecular Ring correction implementation. A 2300-orbit validation showed closer agreement with ground-based results (excepting some polar regions), and much reduced scatter and seasonal variation. These findings are in line with results from the new generation of DOAS algorithms.
Citation
Spurr, R.; Van Roozendael, M.; Fayt, C.; Lambert, J.-C. (2005). The GODFIT (GOME direct fitting) algorithm: A new approach for total column retrieval. (Lacoste, H., Ed.), Proceedings of the 2004 Envisat & ERS Symposium, Salzburg, Austria, 6-10 September 2004 (ESA SP-572), Vol. 572, 1231-1240,Identifiers
isbn: 92-9092-883-2
scopus: 2-s2.0-23844543059
Type
Conference
Peer-Review
No
Language
eng