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Spectra of Particulate Backscattering in Natural WatersHyperspectral profiles of downwelling irradiance and upwelling radiance in natural waters (oligotrophic and mesotrophic) are combined with inverse radiative transfer to obtain high resolution spectra of the absorption coefficient (a) and the backscattering coefficient (bb) of the water and its constituents. The absorption coefficient at the mesotrophic station clearly shows spectral absorption features attributable to several phytoplankton pigments (Chlorophyll a, b, c, and Carotenoids). The backscattering shows only weak spectral features and can be well represented by a power-law variation with wavelength (lambda): b(sub b) approx. Lambda(sup -n), where n is a constant between 0.4 and 1.0. However, the weak spectral features in b(sub b), suggest that it is depressed in spectral regions of strong particle absorption. The applicability of the present inverse radiative transfer algorithm, which omits the influence of Raman scattering, is limited to lambda < 490 nm in oligotrophic waters and lambda < 575 nm in mesotrophic waters.
Document ID
20100035990
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gordon, Howard, R.
(Miami Univ. Coral Gables, FL, United States)
Lewis, Marlon R.
(Dalhousie Univ. Halifax, Nova Scotia, Canada)
McLean, Scott D.
(Satlantic, Inc. Halifax, Nova Scotia, Canada)
Twardowski, Michael S.
(Wet Labs., Inc. Narragansett, RI, United States)
Freeman, Scott A.
(Wet Labs., Inc. Narragansett, RI, United States)
Voss, Kenneth J.
(Miami Univ. Coral Gables, FL, United States)
Boynton, Chris G.
(Miami Univ. Coral Gables, FL, United States)
Date Acquired
August 25, 2013
Publication Date
August 31, 2009
Publication Information
Publication: Optics Express
Volume: 17
Issue: 18
Subject Category
Optics
Funding Number(s)
CONTRACT_GRANT: NNX06AHI4G
CONTRACT_GRANT: N00014-99-1-0007
CONTRACT_GRANT: N0001406C0027
CONTRACT_GRANT: NNX06AH86G
CONTRACT_GRANT: N00014-07-00139
CONTRACT_GRANT: 00014-97-1-0069
CONTRACT_GRANT: NNX08AH93A
CONTRACT_GRANT: NNX06AD44G
Distribution Limits
Public
Copyright
Other

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