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An Optical Model for Deriving the Spectral Particulate Backscattering Coefficients in Clear and Turbid Coastal Waters : Volume 10, Issue 1 (04/02/2013)

By Tiwari, S. P.

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Book Id: WPLBN0004020744
Format Type: PDF Article :
File Size: Pages 30
Reproduction Date: 2015

Title: An Optical Model for Deriving the Spectral Particulate Backscattering Coefficients in Clear and Turbid Coastal Waters : Volume 10, Issue 1 (04/02/2013)  
Author: Tiwari, S. P.
Volume: Vol. 10, Issue 1
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Tiwari, S. P., & Shanmugam, P. (2013). An Optical Model for Deriving the Spectral Particulate Backscattering Coefficients in Clear and Turbid Coastal Waters : Volume 10, Issue 1 (04/02/2013). Retrieved from http://worldlibrary.net/


Description
Description: Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai-600036, India. An optical model is developed based on the diffuse attenuation coefficient (Kd) to estimate particulate backscattering coefficients bbp(Λ) in clear and turbid coastal waters. A large in-situ data set is used to establish robust relationships between bbp(530) and bbp(555) and Kd(490) using an efficient nonlinear least square method which uses the Trust-Region algorithm with Bisquare weights scheme to adjust the coefficients. These relationships are obtained with good correlation coefficients (R2 = 0.786 and 0.790), low Root Mean Square Error (RMSE = 0.00076 and 0.00072) and 95% confidence bounds. The new model is tested with two independent data sets such as the NOMAD SeaWiFS Match-ups and OOXIX IOP algorithm workshop evaluation data set (Version 2.0w APLHA). Results show that the new model makes good retrievals of bbp at all key wavelengths (from 412–683 nm), with statistically significant improvements over other inversion models. Thus, the new model has the potential to improve our knowledge of particulate matters and their optical variability in both clear and turbid coastal waters.

Summary
An optical model for deriving the spectral particulate backscattering coefficients in clear and turbid coastal waters

Excerpt
Mobely, C. D.: Light and water. Radiative transfer in natural waters, San Diego, Academic Press, 1994.; Morel, A.: Diffusion de la lumière par les eaux de mer: Résultats experimentaux et approach théoretique, in: AGARD Lecture Series, 3.1.1–3.1.76, 1973.; Antonie, D., Siegal, D. A., Kostadinov, T., Maritorena, S., Nelson, N. B., Gentilli, B., Vellucci, V., and Guillocheau N.: Variability in optical particle backscattering in contrasting bio-optical oceanic regimes, Limnol. Oceanogr., 56, 955–973, 2011.; Babin, M., Morel, A., Fournier-Sicre, V., Fell, F., and Stramski, D.: Light scattering properties of marine particles in coastal and oceanic waters as related to the particle mass concentration, Limnol. Oceanogr., 48, 843–859, 2003b.; Bohren, C. F. and Singham, S. B.: Backscattering by nonspherical particles: a review of methods and suggested new approaches, J. Geophys. Res., 96, 5269–5277, 1991.; Boss, E. and Roesler, C.: Over constrained linear matrix inversion with statistical selection, Remote Sensing of Inherent Optical Properties: Fundamentals, Tests of Algorithms, and Applications, edited by: Lee, Z., IOCCG, Dartmouth, NS, Canada, IOCCG Rep. 5, 2006.; Boss, E., Taylor, L., Gilbert, S., Gundersen, K., Hawley, N., Janzen, C., Johengen,T., Purcell, H., Robertson, C., Schar, D. W. H., Smith, G. J., and Tamburri, M. N.: Comparison of inherent optical properties as a surrogate for particulate matter concentration in coastal waters, Limnol. Oceanogr.-Meth., 7, 803–810, 2009.; Brewin, R. J. W., Devred, E., Sathyendranath, S., Lavender, S. J., and Hardman-Mountford, N. J.: Model of phytoplankton absorption based on three size classes, Appl. Optics, 50, 4535–4549, 2011.; Bricaud, A. and Morel, A.: Light attenuation and scattering by a phytoplanktonic cells: a theoretical modeling, Appl. Optics, 25, 571–580, 1986.; Coleman, T. F. and Li, Y.: An interior, trust region approach for nonlinear minimization subject to bounds, SIAM J. Optimiz., 6, 418–445, 1996.; Carder, K. L., Chen, F. R., Lee, Z. P., Hawes, S. K., and Kamykowski, D.: Semianalytic Moderate-Resolution Imaging Spectrometer algorithms for chlorophyll-a and absorption with bio-optical domains based on nitrate depletion temperatures, J. Geophys. Res., 104, 5403–5421, 1999.; Chami, M., Shybanov, E. B., Khomenko, G. A., Lee, M. E. G., Martynov, O. V., and Korotaev, G. K.: Spectral variation of the volume scattering function measured over the full range of scattering angles in a coastal environment, Appl. Optics 45, 3605–3619, 2006.; Clavano, W. R., Boss, E., and Karp-Boss, L.: Inherent optical properties of non-spherical marine-like particles – from theory to observations, Oceanogr. Mar. Biol., 45, 1–38, 2007.; Garver, S. A. and Siegel, D.: Inherent optical property inversion of ocean colour spectra and its biogeochemical interpretation – 1. Time series from the Sargasso Sea, J. Geophys. Res., 102, 18607–18625, 1997.; Gordon, H. R.: Spectral variations in the volume scattering function at large angles in natural waters, J. Opt. Soc. Am., 64, 773–775, 1974.; Gordon, H. R.: A semi-analytic radiance model of ocean colour, J. Geophys. Res., 93, 10909–10924, 1988.; Gordon, H. R.: Dependence of the diffuse refle

 

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