A 50 % increase in the mass of terrestrial particles delivered by the Mackenzie River into the Beaufort Sea (Canadian Arctic Ocean) over the last 10 years

International audience Global warming has a significant impact on the regional scale on the Arctic Ocean and surrounding coastal zones (i.e., Alaska, Canada, Greenland, Norway and Russia). The recent increase in air temperature has resulted in increased precipitation along the drainage basins of Arc...

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Published in:Biogeosciences
Main Authors: Doxaran, D., Devred, E., Babin, M.
Other Authors: 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), Takuvik Joint International Laboratory ULAVAL-CNRS, Centre National de la Recherche Scientifique (CNRS)-Université Laval Québec (ULaval)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2015
Subjects:
Ice
Online Access:https://hal.sorbonne-universite.fr/hal-01207328
https://hal.sorbonne-universite.fr/hal-01207328/document
https://hal.sorbonne-universite.fr/hal-01207328/file/bg-12-3551-2015.pdf
https://doi.org/10.5194/bg-12-3551-2015
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spelling ftccsdartic:oai:HAL:hal-01207328v1 2023-05-15T14:46:06+02:00 A 50 % increase in the mass of terrestrial particles delivered by the Mackenzie River into the Beaufort Sea (Canadian Arctic Ocean) over the last 10 years Doxaran, D. Devred, E. Babin, M. 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) Takuvik Joint International Laboratory ULAVAL-CNRS Centre National de la Recherche Scientifique (CNRS)-Université Laval Québec (ULaval) 2015 https://hal.sorbonne-universite.fr/hal-01207328 https://hal.sorbonne-universite.fr/hal-01207328/document https://hal.sorbonne-universite.fr/hal-01207328/file/bg-12-3551-2015.pdf https://doi.org/10.5194/bg-12-3551-2015 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-12-3551-2015 hal-01207328 https://hal.sorbonne-universite.fr/hal-01207328 https://hal.sorbonne-universite.fr/hal-01207328/document https://hal.sorbonne-universite.fr/hal-01207328/file/bg-12-3551-2015.pdf doi:10.5194/bg-12-3551-2015 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.sorbonne-universite.fr/hal-01207328 Biogeosciences, European Geosciences Union, 2015, 12 (11), pp.3551-3565. ⟨10.5194/bg-12-3551-2015⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2015 ftccsdartic https://doi.org/10.5194/bg-12-3551-2015 2021-12-05T03:05:57Z International audience Global warming has a significant impact on the regional scale on the Arctic Ocean and surrounding coastal zones (i.e., Alaska, Canada, Greenland, Norway and Russia). The recent increase in air temperature has resulted in increased precipitation along the drainage basins of Arctic rivers. It has also directly impacted land and seawater temperatures with the consequence of melting permafrost and sea ice. An increase in freshwater discharge by main Arctic rivers has been clearly identified in time series of field observations. The freshwater discharge of the Mackenzie River has increased by 25% since 2003. This may have increased the mobilization and transport of various dissolved and particulate substances, including organic carbon, as well as their export to the ocean. The release from land to the ocean of such organic material, which has been sequestered in a frozen state since the Last Glacial Maximum, may significantly impact the Arctic Ocean carbon cycle as well as marine ecosystems. In this study we use 11 years of ocean color satellite data and field observations collected in 2009 to estimate the mass of terrestrial suspended solids and particulate organic carbon delivered by the Mackenzie River into the Beaufort Sea (Arctic Ocean). Our results show that during the summer period, the concentration of suspended solids at the river mouth, in the delta zone and in the river plume has increased by 46, 71 and 33%, respectively, since 2003. Combined with the variations observed in the freshwater discharge, this corresponds to a more than 50% increase in the particulate (terrestrial suspended particles and organic carbon) export from the Mackenzie River into the Beaufort Sea. Article in Journal/Newspaper Arctic Arctic Ocean Beaufort Sea Global warming Greenland Ice Mackenzie river permafrost Sea ice Alaska Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Arctic Ocean Mackenzie River Canada Greenland Norway Biogeosciences 12 11 3551 3565
institution Open Polar
collection Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
op_collection_id ftccsdartic
language English
topic [SDU.STU]Sciences of the Universe [physics]/Earth Sciences
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
spellingShingle [SDU.STU]Sciences of the Universe [physics]/Earth Sciences
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
Doxaran, D.
Devred, E.
Babin, M.
A 50 % increase in the mass of terrestrial particles delivered by the Mackenzie River into the Beaufort Sea (Canadian Arctic Ocean) over the last 10 years
topic_facet [SDU.STU]Sciences of the Universe [physics]/Earth Sciences
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
description International audience Global warming has a significant impact on the regional scale on the Arctic Ocean and surrounding coastal zones (i.e., Alaska, Canada, Greenland, Norway and Russia). The recent increase in air temperature has resulted in increased precipitation along the drainage basins of Arctic rivers. It has also directly impacted land and seawater temperatures with the consequence of melting permafrost and sea ice. An increase in freshwater discharge by main Arctic rivers has been clearly identified in time series of field observations. The freshwater discharge of the Mackenzie River has increased by 25% since 2003. This may have increased the mobilization and transport of various dissolved and particulate substances, including organic carbon, as well as their export to the ocean. The release from land to the ocean of such organic material, which has been sequestered in a frozen state since the Last Glacial Maximum, may significantly impact the Arctic Ocean carbon cycle as well as marine ecosystems. In this study we use 11 years of ocean color satellite data and field observations collected in 2009 to estimate the mass of terrestrial suspended solids and particulate organic carbon delivered by the Mackenzie River into the Beaufort Sea (Arctic Ocean). Our results show that during the summer period, the concentration of suspended solids at the river mouth, in the delta zone and in the river plume has increased by 46, 71 and 33%, respectively, since 2003. Combined with the variations observed in the freshwater discharge, this corresponds to a more than 50% increase in the particulate (terrestrial suspended particles and organic carbon) export from the Mackenzie River into the Beaufort Sea.
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)
Takuvik Joint International Laboratory ULAVAL-CNRS
Centre National de la Recherche Scientifique (CNRS)-Université Laval Québec (ULaval)
format Article in Journal/Newspaper
author Doxaran, D.
Devred, E.
Babin, M.
author_facet Doxaran, D.
Devred, E.
Babin, M.
author_sort Doxaran, D.
title A 50 % increase in the mass of terrestrial particles delivered by the Mackenzie River into the Beaufort Sea (Canadian Arctic Ocean) over the last 10 years
title_short A 50 % increase in the mass of terrestrial particles delivered by the Mackenzie River into the Beaufort Sea (Canadian Arctic Ocean) over the last 10 years
title_full A 50 % increase in the mass of terrestrial particles delivered by the Mackenzie River into the Beaufort Sea (Canadian Arctic Ocean) over the last 10 years
title_fullStr A 50 % increase in the mass of terrestrial particles delivered by the Mackenzie River into the Beaufort Sea (Canadian Arctic Ocean) over the last 10 years
title_full_unstemmed A 50 % increase in the mass of terrestrial particles delivered by the Mackenzie River into the Beaufort Sea (Canadian Arctic Ocean) over the last 10 years
title_sort 50 % increase in the mass of terrestrial particles delivered by the mackenzie river into the beaufort sea (canadian arctic ocean) over the last 10 years
publisher HAL CCSD
publishDate 2015
url https://hal.sorbonne-universite.fr/hal-01207328
https://hal.sorbonne-universite.fr/hal-01207328/document
https://hal.sorbonne-universite.fr/hal-01207328/file/bg-12-3551-2015.pdf
https://doi.org/10.5194/bg-12-3551-2015
geographic Arctic
Arctic Ocean
Mackenzie River
Canada
Greenland
Norway
geographic_facet Arctic
Arctic Ocean
Mackenzie River
Canada
Greenland
Norway
genre Arctic
Arctic Ocean
Beaufort Sea
Global warming
Greenland
Ice
Mackenzie river
permafrost
Sea ice
Alaska
genre_facet Arctic
Arctic Ocean
Beaufort Sea
Global warming
Greenland
Ice
Mackenzie river
permafrost
Sea ice
Alaska
op_source ISSN: 1726-4170
EISSN: 1726-4189
Biogeosciences
https://hal.sorbonne-universite.fr/hal-01207328
Biogeosciences, European Geosciences Union, 2015, 12 (11), pp.3551-3565. ⟨10.5194/bg-12-3551-2015⟩
op_relation info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-12-3551-2015
hal-01207328
https://hal.sorbonne-universite.fr/hal-01207328
https://hal.sorbonne-universite.fr/hal-01207328/document
https://hal.sorbonne-universite.fr/hal-01207328/file/bg-12-3551-2015.pdf
doi:10.5194/bg-12-3551-2015
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container_title Biogeosciences
container_volume 12
container_issue 11
container_start_page 3551
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