Journal ArticleDOI
Absorption spectrum (380–700 nm) of pure water. II. Integrating cavity measurements
Robin M. Pope,Edward S. Fry +1 more
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Definitive data on the absorption spectrum of pure water from 380 to 700 nm have been obtained with an integrating cavity technique and several spectroscopic features have been identified in the visible spectrum to the knowledge for the first time.Abstract:
Definitive data on the absorption spectrum of pure water from 380 to 700 nm have been obtained with an integrating cavity technique. The results are in good agreement with those recently obtained by our group with a completely independent photothermal technique. As before, we find that the absorption in the blue is significantly lower than had previously been generally believed and that the absorption minimum is at a significantly shorter wavelength, i.e., 0.0044 ? 0.0006 m(-1) at 418 nm. Several spectroscopic features have been identified in the visible spectrum to our knowledge for the first time.read more
Citations
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Journal ArticleDOI
Ocean Color Chlorophyll Algorithms for SEAWIFS
John E. O'Reilly,Stéphane Maritorena,B. Greg Mitchell,David A. Siegel,Kendall L. Carder,Sara A. Garver,Mati Kahru,Charles R. McClain +7 more
TL;DR: In this article, a large data set containing coincident in situ chlorophyll and remote sensing reflectance measurements was used to evaluate the accuracy, precision, and suitability of a wide variety of ocean color algorithms for use by SeaWiFS (Sea-viewing Wide Field-of-view Sensor).
Journal ArticleDOI
Deriving inherent optical properties from water color: a multiband quasi-analytical algorithm for optically deep waters
TL;DR: For open ocean and coastal waters, a multiband quasi-analytical algorithm is developed to retrieve absorption and backscattering coefficients, as well as absorption coefficients of phytoplankton pigments and gelbstoff, based on remote-sensing reflectance models derived from the radiative transfer equation.
Journal ArticleDOI
Bio-optical properties of oceanic waters: A reappraisal
André Morel,Stéphane Maritorena +1 more
TL;DR: In this article, the spectral attenuation for downward irradiance Kd(X) and irradiance reflectance R(X), as well as a bio-optical model of the upper layer was developed.
Journal ArticleDOI
Optimization of a semianalytical ocean color model for global-scale applications
TL;DR: A procedure for optimizing SA ocean color models for global applications by tuned by simulated annealing as the global optimization protocol and results are comparable with the current Sea-viewing Wide Field-of-view sensor (SeaWiFS) algorithm for Chl.
Journal ArticleDOI
Hyperspectral remote sensing for shallow waters: 2. Deriving bottom depths and water properties by optimization
TL;DR: The results suggest that the model and method used in this study, which do not require in situ calibration measurements, perform very well in retrieving in-water optical properties and bottom depths from above-surface hyperspectral measurements.
References
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Book
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TL;DR: Numerical methods matrices graphs and tables histograms and graphs computer routines in Pascal and Monte Carlo techniques dependent and independent variables least-squares fit to a polynomial least-square fit to an arbitrary function fitting composite peaks direct application of the maximum likelihood.
Journal ArticleDOI
Optical properties of the clearest natural waters (200–800 nm)
Raymond C. Smith,Karen S. Baker +1 more
TL;DR: A comparative analysis and new data allow a consistent and accurate set of optical properties for the clearest natural waters and for pure fresh water and saltwater to be estimated from 300 to 800 nm.
Proceedings ArticleDOI
Optical properties of pure water
TL;DR: In this paper, the scattering of pure water is recalculated using the Einstein-Smoluchowski equation and the input for this equation is evaluated and the temperature dependency is included.