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JPR Advance Access originally published online on September 30, 2004
Journal of Plankton Research 2005 27(1):125-127; doi:10.1093/plankt/fbh151
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Journal of Plankton Research Vol. 27 No. 1 © Oxford University Press 2004; all rights reserved

SHORT COMMUNICATION

Effect of a waveband shift on chlorophyll retrieval from MERIS imagery of inland and coastal waters

Herman J. Gons1,*, Machteld Rijkeboer2,{dagger} and Kevin G. Ruddick3

1 Netherlands Institute of Ecology (Nioo-Knaw), Centre for Limnology, Rijksstraatweg 6, 3631 AC Nieuwersluis, The Netherlands, 2 Institute for Environmental Studies, Free University, De Boelelaan 1087, 1081 HV Amsterdam, The Netherlands and 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 {dagger} Present Address: Netherlands Institute of Ecology (Nioo-Knaw), Centre for Limnology, Rijksstraatweg 6, 3631 AC Nieuwersluis, The Netherlands

* Corresponding Author: h.gons{at}nioo.knaw.nl

Received June 22, 2004; accepted in principle August 19, 2004; accepted for publication September 15, 2004; published online September 30, 2004

A chlorophyll-retrieval algorithm for use with imagery from the Medium Resolution Imaging Spectrometer (MERIS) aboard ENVISAT relying on wavebands centred at 665, 705 and 775 nm was described in a previous paper (Gons et al. 2002, J. Plankton Res., 24, 947–951). The present study reexamined 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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