Bio-optical characteristics of the western Arctic Ocean: implications for ocean color algorithms
Global ocean color algorithms designed to estimate chlorophyll a concentration (chla) are not accurate at high latitudes. Although a regional Arctic OC4L algorithm was designed to be applicable to high northern latitudes, its applicability remains uncertain. To examine these issues, we investigated...
Published in: | Canadian Journal of Remote Sensing |
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Online Access: | https://hal.science/hal-03504926 https://doi.org/10.5589/m07-059 |
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ftunivnantes:oai:HAL:hal-03504926v1 2023-05-15T14:53:35+02:00 Bio-optical characteristics of the western Arctic Ocean: implications for ocean color algorithms Matsuoka, Atsushi Huot, Yannick Shimada, Koji Saitoh, Sei-Ichi Babin, Marcel Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Département de géomatique appliquée Sherbrooke (UdeS) Université de Sherbrooke (UdeS) 2007 https://hal.science/hal-03504926 https://doi.org/10.5589/m07-059 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5589/m07-059 hal-03504926 https://hal.science/hal-03504926 doi:10.5589/m07-059 CANADIAN JOURNAL OF REMOTE SENSING https://hal.science/hal-03504926 CANADIAN JOURNAL OF REMOTE SENSING, 2007, 33 (6), pp.503-518. ⟨10.5589/m07-059⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2007 ftunivnantes https://doi.org/10.5589/m07-059 2023-02-08T03:27:10Z Global ocean color algorithms designed to estimate chlorophyll a concentration (chla) are not accurate at high latitudes. Although a regional Arctic OC4L algorithm was designed to be applicable to high northern latitudes, its applicability remains uncertain. To examine these issues, we investigated the light absorption coefficients of phytoplankton, non-algal particles (NAP), and colored dissolved organic matter (CDOM) and remote sensing reflectance, R-rs(lambda), covering most of the western Arctic Ocean. A higher pigment packaging effect was identified relative to that at lower latitudes. The CDOM absorption dominated and accounted for 76% of the total non-water absorption at 443 nm and did not covary with variations in chla. This absorption is significantly higher than those in other marine environments. We also examined the backscattering coefficient of particles obtained from the inversion of R-rs(lambda) and found that it covaried well with variation in NAP absorption. Our evaluation shows that when turbid waters (R-rs(670) > 0.00042 sr(-1)) are excluded, the performance of the OC4L is good and much better than that of the sea-viewing wide field-of-view sensor (SeaWiFS) OC4V4 and the moderate-resolution imaging spectroradiometer (MODIS) OC3M (root mean square error (RMSE) of 0.13, 0.21, and 0.22, respectively). The reason why the OC4L performs well despite strong CDOM absorption is discussed. Article in Journal/Newspaper Arctic Arctic Ocean Phytoplankton Université de Nantes: HAL-UNIV-NANTES Arctic Arctic Ocean Lambda ENVELOPE(-62.983,-62.983,-64.300,-64.300) Canadian Journal of Remote Sensing 33 6 503 518 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Matsuoka, Atsushi Huot, Yannick Shimada, Koji Saitoh, Sei-Ichi Babin, Marcel Bio-optical characteristics of the western Arctic Ocean: implications for ocean color algorithms |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
Global ocean color algorithms designed to estimate chlorophyll a concentration (chla) are not accurate at high latitudes. Although a regional Arctic OC4L algorithm was designed to be applicable to high northern latitudes, its applicability remains uncertain. To examine these issues, we investigated the light absorption coefficients of phytoplankton, non-algal particles (NAP), and colored dissolved organic matter (CDOM) and remote sensing reflectance, R-rs(lambda), covering most of the western Arctic Ocean. A higher pigment packaging effect was identified relative to that at lower latitudes. The CDOM absorption dominated and accounted for 76% of the total non-water absorption at 443 nm and did not covary with variations in chla. This absorption is significantly higher than those in other marine environments. We also examined the backscattering coefficient of particles obtained from the inversion of R-rs(lambda) and found that it covaried well with variation in NAP absorption. Our evaluation shows that when turbid waters (R-rs(670) > 0.00042 sr(-1)) are excluded, the performance of the OC4L is good and much better than that of the sea-viewing wide field-of-view sensor (SeaWiFS) OC4V4 and the moderate-resolution imaging spectroradiometer (MODIS) OC3M (root mean square error (RMSE) of 0.13, 0.21, and 0.22, respectively). The reason why the OC4L performs well despite strong CDOM absorption is discussed. |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Département de géomatique appliquée Sherbrooke (UdeS) Université de Sherbrooke (UdeS) |
format |
Article in Journal/Newspaper |
author |
Matsuoka, Atsushi Huot, Yannick Shimada, Koji Saitoh, Sei-Ichi Babin, Marcel |
author_facet |
Matsuoka, Atsushi Huot, Yannick Shimada, Koji Saitoh, Sei-Ichi Babin, Marcel |
author_sort |
Matsuoka, Atsushi |
title |
Bio-optical characteristics of the western Arctic Ocean: implications for ocean color algorithms |
title_short |
Bio-optical characteristics of the western Arctic Ocean: implications for ocean color algorithms |
title_full |
Bio-optical characteristics of the western Arctic Ocean: implications for ocean color algorithms |
title_fullStr |
Bio-optical characteristics of the western Arctic Ocean: implications for ocean color algorithms |
title_full_unstemmed |
Bio-optical characteristics of the western Arctic Ocean: implications for ocean color algorithms |
title_sort |
bio-optical characteristics of the western arctic ocean: implications for ocean color algorithms |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-03504926 https://doi.org/10.5589/m07-059 |
long_lat |
ENVELOPE(-62.983,-62.983,-64.300,-64.300) |
geographic |
Arctic Arctic Ocean Lambda |
geographic_facet |
Arctic Arctic Ocean Lambda |
genre |
Arctic Arctic Ocean Phytoplankton |
genre_facet |
Arctic Arctic Ocean Phytoplankton |
op_source |
CANADIAN JOURNAL OF REMOTE SENSING https://hal.science/hal-03504926 CANADIAN JOURNAL OF REMOTE SENSING, 2007, 33 (6), pp.503-518. ⟨10.5589/m07-059⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5589/m07-059 hal-03504926 https://hal.science/hal-03504926 doi:10.5589/m07-059 |
op_doi |
https://doi.org/10.5589/m07-059 |
container_title |
Canadian Journal of Remote Sensing |
container_volume |
33 |
container_issue |
6 |
container_start_page |
503 |
op_container_end_page |
518 |
_version_ |
1766325196669583360 |