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Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S3 — May. 5, 2014
  • pp: A947–A959

Retrieval of vertical particle concentration profiles by optical remote sensing: a model study

Jaime Pitarch, Daniel Odermatt, Marcin Kawka, and Alfred Wüest  »View Author Affiliations


Optics Express, Vol. 22, Issue S3, pp. A947-A959 (2014)
http://dx.doi.org/10.1364/OE.22.00A947


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Abstract

Water-leaving radiance is subject to depth variability of the water constituents. The optical penetration depth is strongly dependent on the wavelength λ, which allows to retrieve a non-uniform vertical profile of an optically-active constituent CTSM(z) from remote-sensing reflectance Rrs(λ,Cz). We define the apparent particle concentration CTSM,app(λ) of a vertically homogeneous water column whose Rrs(λ,Cconst) matches Rrs(λ,Cz). Subsequently, we define a vertically-weighted averaged particle concentration CTSM,ave(λ), only dependent on CTSM(z), and retrieve CTSM(z) by minimizing the error between CTSM,app(λ) and CTSM,ave(λ) with genetic algorithms. We conclude that the retrieval is excellent if the sub-surface maximum lays close to the surface or the background concentration of CTSM(z) is low. Conversely, results worsen for opposite conditions, due to insufficient signal strength from superimposed sub-surface maxima.

© 2014 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

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: March 6, 2014
Revised Manuscript: April 9, 2014
Manuscript Accepted: April 11, 2014
Published: April 18, 2014

Virtual Issues
Vol. 9, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Jaime Pitarch, Daniel Odermatt, Marcin Kawka, and Alfred Wüest, "Retrieval of vertical particle concentration profiles by optical remote sensing: a model study," Opt. Express 22, A947-A959 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-S3-A947


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