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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 3 — Jan. 20, 2005
  • pp: 412–422

Effect of bio-optical parameter variability on the remote estimation of chlorophyll-a concentration in turbid productive waters: experimental results

Giorgio Dall’Olmo and Anatoly A. Gitelson  »View Author Affiliations


Applied Optics, Vol. 44, Issue 3, pp. 412-422 (2005)
http://dx.doi.org/10.1364/AO.44.000412


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Abstract

The analytical development and underlying hypothesis of a three-band algorithm for estimating chlorophyll-a concentration ([Chla]) in turbid productive waters are presented. The sensitivity of the algorithm to the spectral location of the bands used is analyzed. A large set of experimental observations ([Chla] varied between 4 and 217 mg m−3 and turbidity between 2 and 78 nephelometric turbidity units) was used to calibrate and validate the algorithm. It was found that the variability of the chlorophyll-a fluorescence quantum yield and of the chlorophyll-a specific absorption coefficient can reduce considerably the accuracy of remote predictions of [Chla]. Instead of parameterizing these interferences, their effects were minimized by tuning the spectral regions used in the algorithm. This allowed us to predict [Chla] with a relative root-mean-square error of less than 30%.

© 2005 Optical Society of America

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

History
Original Manuscript: March 23, 2004
Revised Manuscript: September 15, 2004
Manuscript Accepted: September 21, 2004
Published: January 20, 2005

Citation
Giorgio Dall’Olmo and Anatoly A. Gitelson, "Effect of bio-optical parameter variability on the remote estimation of chlorophyll-a concentration in turbid productive waters: experimental results," Appl. Opt. 44, 412-422 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-3-412

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