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| Titel |
Assessment of MERIS ocean color data products for European seas |
| VerfasserIn |
G. Zibordi, F. Mélin, J.-F. Berthon, E. Canuti |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 9, no. 3 ; Nr. 9, no. 3 (2013-05-27), S.521-533 |
| Datensatznummer |
250018076
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| Publikation (Nr.) |
 copernicus.org/os-9-521-2013.pdf |
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| Zusammenfassung |
| The accuracy of marine data products from the Medium Resolution
Imaging Spectrometer (MERIS) operated on board the Envisat platform is
investigated with the aid of in situ geographically distributed measurements from
different European seas. The assessment focuses on standard products from
the 2012 data update commonly identified as 3rd Reprocessing. Results
indicate atmospherically corrected data affected by a negative bias of
several tens percent at the 413 nm center wavelength, significantly
decreasing to a few percent at 560 nm and increasing again at 665 nm. Such
an underestimate at the blue center wavelengths leads to an average
overestimate of the algal-1 MERIS pigment index largely exceeding 100% for the
considered European seas. A comparable overestimate is also observed for the
algal-2 pigment index independently determined from top-of-atmosphere radiance
through the application of neural networks. |
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