Evaluation of atmospheric correction algorithms in the extreme absorbing waters of the Laptev Sea


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Mariana.Altenburg.Soppa [ at ] awi.de

Abstract

Atmospheric correction (AC) in extreme absorbing waters is challenging. The signal coming out of the water is very low when the concentration of colored dissolved organic matter (CDOM) is high, particularly in the short visible wavelengths. Here, we assess the performance of AC algorithms to estimate chlorophyll-a concentration (CHL) and CDOM absorption at 443 nm (aCDOM443) in the optically-complex waters of the Laptev Sea. The performance of C2RCC, C2X, Polymer, and a modified version of the Polymer algorithm for Arctic waters are evaluated. The algorithms were applied to daily MERIS L1b data and the retrievals were validated against in situ measurements of CHL and aCDOM443 from field campaigns conducted in August/September of 2010 and 2011. Preliminary results of the inter-comparison and evaluation against in situ measurements are presented.



Item Type
Conference (Poster)
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Peer-reviewed
Publication Status
Published
Event Details
HIGHROC Science Conference, 07 Nov 2017 - 09 Nov 2017.
Eprint ID
48468
Cite as
Soppa, M. A. , Hellmann, S. , Hoelemann, J. , Martynov, F. , Heim, B. , Steinmetz, F. , Dinter, T. and Bracher, A. (2017): Evaluation of atmospheric correction algorithms in the extreme absorbing waters of the Laptev Sea , HIGHROC Science Conference, 7 November 2017 - 9 November 2017 .


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