A synthesis of light absorption properties of the Arctic Ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space
International audience In addition to scattering coefficients, the light absorption coefficients of particulate and dissolved materials are the main factors determining the light propagation of the visible part of the spectrum and are, thus, important for developing ocean color algorithms. While the...
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ftinsu:oai:HAL:hal-04110575v1 2023-06-18T03:38:56+02:00 A synthesis of light absorption properties of the Arctic Ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space Matsuoka, A. Babin, M. Doxaran, D. Hooker, S. B. Mitchell, B. G. Bélanger, S. Bricaud, A. Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2014 https://hal.science/hal-04110575 https://doi.org/10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013 hal-04110575 https://hal.science/hal-04110575 BIBCODE: 2014BGeo.11.3131M doi:10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013 Biogeosciences https://hal.science/hal-04110575 Biogeosciences, 2014, 11, pp.3131-3147. ⟨10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013⟩ Earth Science [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2014 ftinsu https://doi.org/10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013 2023-06-05T19:27:07Z International audience In addition to scattering coefficients, the light absorption coefficients of particulate and dissolved materials are the main factors determining the light propagation of the visible part of the spectrum and are, thus, important for developing ocean color algorithms. While these absorption properties have recently been documented by a few studies for the Arctic Ocean (e.g., Matsuoka et al., 2007, 2011; Ben Mustapha et al., 2012), the data sets used in the literature were sparse and individually insufficient to draw a general view of the basin-wide spatial and temporal variations in absorption. To achieve such a task, we built a large absorption database of the Arctic Ocean by pooling the majority of published data sets and merging new data sets. Our results show that the total nonwater absorption coefficients measured in the eastern Arctic Ocean (EAO; Siberian side) are significantly higher than in the western Arctic Ocean (WAO; North American side). This higher absorption is explained by higher concentration of colored dissolved organic matter (CDOM) in watersheds on the Siberian side, which contains a large amount of dissolved organic carbon (DOC) compared to waters off North America. In contrast, the relationship between the phytoplankton absorption (a φ(λ) ) and chlorophyll a (chl a) concentration in the EAO was not significantly different from that in the WAO. Because our semianalytical CDOM absorption algorithm is based on chl a-specific a φ(λ) values (Matsuoka et al., 2013), this result indirectly suggests that CDOM absorption can be appropriately derived not only for the WAO but also for the EAO using ocean color data. Based on statistics, derived CDOM absorption values were reasonable compared to in situ measurements. By combining this algorithm with empirical DOC versus CDOM relationships, a semianalytical algorithm for estimating DOC concentrations for river-influenced coastal waters of the Arctic Ocean is presented and applied to satellite ocean color data. Article in Journal/Newspaper Arctic Arctic Ocean Phytoplankton Institut national des sciences de l'Univers: HAL-INSU Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Earth Science [SDU]Sciences of the Universe [physics] |
spellingShingle |
Earth Science [SDU]Sciences of the Universe [physics] Matsuoka, A. Babin, M. Doxaran, D. Hooker, S. B. Mitchell, B. G. Bélanger, S. Bricaud, A. A synthesis of light absorption properties of the Arctic Ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space |
topic_facet |
Earth Science [SDU]Sciences of the Universe [physics] |
description |
International audience In addition to scattering coefficients, the light absorption coefficients of particulate and dissolved materials are the main factors determining the light propagation of the visible part of the spectrum and are, thus, important for developing ocean color algorithms. While these absorption properties have recently been documented by a few studies for the Arctic Ocean (e.g., Matsuoka et al., 2007, 2011; Ben Mustapha et al., 2012), the data sets used in the literature were sparse and individually insufficient to draw a general view of the basin-wide spatial and temporal variations in absorption. To achieve such a task, we built a large absorption database of the Arctic Ocean by pooling the majority of published data sets and merging new data sets. Our results show that the total nonwater absorption coefficients measured in the eastern Arctic Ocean (EAO; Siberian side) are significantly higher than in the western Arctic Ocean (WAO; North American side). This higher absorption is explained by higher concentration of colored dissolved organic matter (CDOM) in watersheds on the Siberian side, which contains a large amount of dissolved organic carbon (DOC) compared to waters off North America. In contrast, the relationship between the phytoplankton absorption (a φ(λ) ) and chlorophyll a (chl a) concentration in the EAO was not significantly different from that in the WAO. Because our semianalytical CDOM absorption algorithm is based on chl a-specific a φ(λ) values (Matsuoka et al., 2013), this result indirectly suggests that CDOM absorption can be appropriately derived not only for the WAO but also for the EAO using ocean color data. Based on statistics, derived CDOM absorption values were reasonable compared to in situ measurements. By combining this algorithm with empirical DOC versus CDOM relationships, a semianalytical algorithm for estimating DOC concentrations for river-influenced coastal waters of the Arctic Ocean is presented and applied to satellite ocean color data. |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Matsuoka, A. Babin, M. Doxaran, D. Hooker, S. B. Mitchell, B. G. Bélanger, S. Bricaud, A. |
author_facet |
Matsuoka, A. Babin, M. Doxaran, D. Hooker, S. B. Mitchell, B. G. Bélanger, S. Bricaud, A. |
author_sort |
Matsuoka, A. |
title |
A synthesis of light absorption properties of the Arctic Ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space |
title_short |
A synthesis of light absorption properties of the Arctic Ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space |
title_full |
A synthesis of light absorption properties of the Arctic Ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space |
title_fullStr |
A synthesis of light absorption properties of the Arctic Ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space |
title_full_unstemmed |
A synthesis of light absorption properties of the Arctic Ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space |
title_sort |
synthesis of light absorption properties of the arctic ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-04110575 https://doi.org/10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Phytoplankton |
genre_facet |
Arctic Arctic Ocean Phytoplankton |
op_source |
Biogeosciences https://hal.science/hal-04110575 Biogeosciences, 2014, 11, pp.3131-3147. ⟨10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013 hal-04110575 https://hal.science/hal-04110575 BIBCODE: 2014BGeo.11.3131M doi:10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013 |
op_doi |
https://doi.org/10.5194/bg-11-3131-201410.5194/bgd-10-17071-2013 |
_version_ |
1769003772896346112 |