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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 21 — Jul. 20, 2001
  • pp: 3575–3585

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

Kevin George Ruddick, Herman J. Gons, Machteld Rijkeboer, and Gavin Tilstone  »View Author Affiliations


Applied Optics, Vol. 40, Issue 21, pp. 3575-3585 (2001)
http://dx.doi.org/10.1364/AO.40.003575


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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.

© 2001 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(010.7340) Atmospheric and oceanic optics : Water
(280.0280) Remote sensing and sensors : Remote sensing and sensors

History
Original Manuscript: August 17, 2000
Revised Manuscript: February 20, 2001
Published: July 20, 2001

Citation
Kevin George Ruddick, Herman J. Gons, Machteld Rijkeboer, and Gavin Tilstone, "Optical remote sensing of chlorophyll a in case 2 waters by use of an adaptive two-band algorithm with optimal error properties," Appl. Opt. 40, 3575-3585 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-21-3575

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