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JPR Advance Access published online on September 30, 2004
Journal of Plankton Research, doi:10.1093/plankt/fbh151
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Received June 22, 2004
Accepted September 15, 2004

Short Communication

Effect of a Waveband Shift on Chlorophyll Retrieval from MERIS Imagery of Inland and Coastal Waters

Herman J. Gons 1*, Machteld Rijkeboer 2, and Kevin G. Ruddick 3

1 Netherlands Institute of Ecology (NIOO-KNAW), Centre for Limnology, Rijksstraatweg 6, 3631 AC Nieuwersluis,
2 Institute for Environmental Studies, Free University, De Boelelaan 1087, 1081 HV Amsterdam, The Netherlands and; Present address: Netherlands Institute of Ecology (NIOO-KNAW), Centre for Limnology, Rijksstraatweg 6, 3631 AC Nieuwersluis, The Netherlands
3 Management Unit of the Mathematical Models of the North Sea (MUMM), Royal Belgian Institute for Natural Sciences (RBINS), 100 Gulledelle, B-1200 Brussels, Belgium

* To whom correspondence should be addressed. E-mail: h.gons{at}nioo.knaw.nl..


  Abstract

A chlorophyll-retrieval algorithm for use with imagery from MERIS aboard ENVISAT relying on wavebands centered at 665, 705 and 775 nm was described in a previous paper (Gons et al., J.Plankt.Res. 24:947-951). The present study re-examined the performance for the current nominal setting to 708.75 nm of the previously envisaged 705-nm band. Validation of the algorithm with revised coefficients gave the same standard error of estimate for the inland and coastal waters as in the original work. The algorithm has been transcribed for direct application with the MERIS level-2 standard product ‘water-leaving reflectance’. By this correction chlorophyll estimation will generally improve, especially for high concentrations.


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