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Implementation of an Analytical Raman Scattering Correction for Satellite Ocean-Color ProcessingRaman scattering of photons by seawater molecules is an inelastic scattering process. This effect can contribute significantly to the water-leaving radiance signal observed by space-borne ocean-color spectroradiometers. If not accounted for during ocean-color processing, Raman scattering can cause biases in derived inherent optical properties (IOPs). Here we describe a Raman scattering correction (RSC) algorithm that has been integrated within NASA's standard ocean-color processing software. We tested the RSC with NASA's Generalized Inherent Optical Properties algorithm (GIOP). A comparison between derived IOPs and in situ data revealed that the magnitude of the derived backscattering coefficient and the phytoplankton absorption coefficient were reduced when the RSC was applied, whilst the absorption coefficient of colored dissolved and detrital matter remained unchanged. Importantly, our results show that the RSC did not degrade the retrieval skill of the GIOP. In addition, a timeseries study of oligotrophic waters near Bermuda showed that the RSC did not introduce unwanted temporal trends or artifacts into derived IOPs.
Document ID
20160008409
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
McKinna, Lachlan I. W.
(Science Applications International Corp. Greenbelt, MD, United States)
Werdell, P. Jeremy
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Proctor, Christopher W.
(Science Applications International Corp. Greenbelt, MD, United States)
Date Acquired
July 1, 2016
Publication Date
June 20, 2016
Publication Information
Publication: Optics Express
Publisher: OSA
Volume: 24
Issue: 14
Subject Category
Oceanography
Earth Resources And Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN33548
Funding Number(s)
CONTRACT_GRANT: NNG14HZ03C
Distribution Limits
Public
Copyright
Other
Keywords
SeaDAS
Raman scattering
Ocean color

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