Implementation of an Analytical Raman Scattering Correction for Satellite Ocean-Color Processing
2016
Raman scatteringof 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 scatteringcan cause biases in derived inherent optical properties (
IOPs). Here we describe a
Raman scatteringcorrection (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
IOPsand 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 time-series study of oligotrophic waters near Bermuda showed that the RSC did not introduce unwanted temporal trends or artifacts into derived
IOPs.
Keywords:
-
Correction
-
Source
-
Cite
-
Save
37
References
11
Citations
NaN
KQI