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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 2 — Mar. 4, 2013

Modeling the effects of near-surface plumes of suspended particulate matter on remote-sensing reflectance of coastal waters

Qian Yang, Dariusz Stramski, and Ming-Xia He  »View Author Affiliations


Applied Optics, Vol. 52, Issue 3, pp. 359-374 (2013)
http://dx.doi.org/10.1364/AO.52.000359


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Abstract

A radiative transfer model was applied to examine the effects of vertically stratified inherent optical properties of the water column associated with near-surface plumes of suspended particulate matter on spectral remote-sensing reflectance, Rrs(λ), of coastal marine environments. The simulations for nonuniform ocean consisting of two layers with different concentrations of suspended particulate matter (SPM) are compared with simulations for a reference homogeneous ocean whose SPM is identical to the surface SPM of the two-layer cases. The near-surface plumes of particles are shown to exert significant influence on Rrs(λ). The sensitivity of Rrs(λ) to vertical profile of SPM is dependent on the optical beam attenuation coefficient within the top layer, c1(λ), thickness of the top layer, z1, and the ratio of SPM in the underlying layer to that in the top layer, SPM2/SPM1, as well as the wavelength of light, λ. We defined a dimensionless spectral parameter, P(λ)=c1(λ)×z1×(SPM2/SPM1), to quantify and examine the effects of these characteristics of the two-layer profile of SPM on the magnitude and spectral shape of Rrs(λ). In general, the difference of Rrs(λ) between the two-layer and uniform ocean decreases to zero with an increase in P(λ). For the interpretation of ocean color measurements of water column influenced by near-surface plumes of particles, another dimensionless parameter P(λ) was introduced, which is a product of terms representing homogenous ocean and a change caused by the two-layer structure of SPM. Based on the analysis of this parameter, we found that for the two-layer ocean there is a good relationship between Rrs(λ) in the red and near-infrared spectral regions and the parameters describing the SPM(z) profile, i.e., SPM1, SPM2, and z1.

© 2013 Optical Society of America

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

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: August 10, 2012
Manuscript Accepted: November 18, 2012
Published: January 11, 2013

Virtual Issues
Vol. 8, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Qian Yang, Dariusz Stramski, and Ming-Xia He, "Modeling the effects of near-surface plumes of suspended particulate matter on remote-sensing reflectance of coastal waters," Appl. Opt. 52, 359-374 (2013)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-52-3-359

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