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Optical remote sensing of chlorophyll a in case 2 waters by use of an adaptive two-band algorithem with optical error properties

Ruddick, K.G. and Gons, H.J. and Rijkeboer, M. and Tilstone, G. (2001) Optical remote sensing of chlorophyll a in case 2 waters by use of an adaptive two-band algorithem with optical error properties. Applied Optics, 40, 3575-3585. ISSN 0003-6935.

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Official URL: http://dx.doi.org/10.1364/AO.40.003575

Abstract

Two-band algorithms that use the ratio of reflectances at 672 and 704 nm have already proved successful for chlorophyll a retrieval in a range of coastal and inland waters. An analysis of the effect of reflectance measurement errors on such algorithms is made. It provides important indications of the range of validity of these algorithms and motivates the development of an entirely new type of adaptive two-band algorithm for hyperspectral data, whereby the higher wavelength is chosen for each input spectrum individually. When one selects the wavelength at which reflectance is equal to the reflectance at the red chlorophyll a absorption peak, chlorophyll a retrieval becomes entirely insensitive to spectrally flat reflectance errors, which are typical of imperfect atmospheric correction, and is totally uncoupled from the retrieval or an estimation of backscatter. This new algorithm has been tested for Dutch inland and Belgian coastal waters. (C) 2001 Optical Society of America. [KEYWORDS: CASE-II WATERS, ATMOSPHERIC CORRECTION, OCEAN COLOR, INLAND WATERS, COASTAL WATERS, SEAWIFS IMAGERY, TURBID COASTAL, PHYTOPLANKTON, MODEL, REFLECTANCE]

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:11057
Deposited On:24 Nov 2011 01:00
Last Modified:15 Jan 2014 09:32

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