Biogeochemical River Runoff Drives Intense Coastal Arctic Ocean CO2 Outgassing
Arctic warming alters land‐to‐sea fluxes of nutrients and organic matter, which impact air‐sea carbon exchange. Here we use an ocean‐biogeochemical model of the southeastern Beaufort Sea (SBS) to investigate the role of Mackenzie River biogeochemical discharge in modulating air‐sea CO 2 fluxes durin...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-04213868 https://doi.org/10.1029/2022GL102377 |
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ftunivrochelle:oai:HAL:hal-04213868v1 2024-02-11T10:00:32+01:00 Biogeochemical River Runoff Drives Intense Coastal Arctic Ocean CO2 Outgassing Bertin, C. Carroll, D. Menemenlis, D. Dutkiewicz, S. Zhang, H. Matsuoka, A. Tank, S. Manizza, M. Miller, C. Babin, M. Mangin, A. Le Fouest, Vincent LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Moss Landing Marine Laboratories NASA Jet Propulsion Laboratory Massachusetts Institute of Technology (MIT) Scripps Institution of Oceanography (SIO - UC San Diego) University of California San Diego (UC San Diego) University of California (UC)-University of California (UC) Takuvik International Research Laboratory Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) ACRI-HE 2023-04-28 https://hal.science/hal-04213868 https://doi.org/10.1029/2022GL102377 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2022GL102377 hal-04213868 https://hal.science/hal-04213868 doi:10.1029/2022GL102377 ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-04213868 Geophysical Research Letters, 2023, 50 (8), ⟨10.1029/2022GL102377⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2023 ftunivrochelle https://doi.org/10.1029/2022GL102377 2024-01-23T23:34:07Z Arctic warming alters land‐to‐sea fluxes of nutrients and organic matter, which impact air‐sea carbon exchange. Here we use an ocean‐biogeochemical model of the southeastern Beaufort Sea (SBS) to investigate the role of Mackenzie River biogeochemical discharge in modulating air‐sea CO 2 fluxes during 2000–2019. The contribution of six biogeochemical discharge constituents leads to a net CO 2 outgassing of 0.13 TgC yr −1 , with a decrease in the coastal SBS carbon sink of 0.23 and 0.4 TgC yr −1 due to riverine dissolved organic and inorganic carbon, respectively. Years with high (low) discharge promote more CO 2 outgassing (uptake) from the river plume. These results demonstrate that the Mackenzie River modulates the capacity of the SBS to act as a sink or source of atmospheric CO 2 . Our work suggests that accurate model representation of land‐to‐sea biogeochemical coupling can be critical for assessing present‐day Arctic coastal ocean response to the rapidly changing environment. Article in Journal/Newspaper Arctic Arctic Ocean Beaufort Sea Mackenzie river HAL - Université de La Rochelle Arctic Arctic Ocean Mackenzie River Geophysical Research Letters 50 8 |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Bertin, C. Carroll, D. Menemenlis, D. Dutkiewicz, S. Zhang, H. Matsuoka, A. Tank, S. Manizza, M. Miller, C. Babin, M. Mangin, A. Le Fouest, Vincent Biogeochemical River Runoff Drives Intense Coastal Arctic Ocean CO2 Outgassing |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
Arctic warming alters land‐to‐sea fluxes of nutrients and organic matter, which impact air‐sea carbon exchange. Here we use an ocean‐biogeochemical model of the southeastern Beaufort Sea (SBS) to investigate the role of Mackenzie River biogeochemical discharge in modulating air‐sea CO 2 fluxes during 2000–2019. The contribution of six biogeochemical discharge constituents leads to a net CO 2 outgassing of 0.13 TgC yr −1 , with a decrease in the coastal SBS carbon sink of 0.23 and 0.4 TgC yr −1 due to riverine dissolved organic and inorganic carbon, respectively. Years with high (low) discharge promote more CO 2 outgassing (uptake) from the river plume. These results demonstrate that the Mackenzie River modulates the capacity of the SBS to act as a sink or source of atmospheric CO 2 . Our work suggests that accurate model representation of land‐to‐sea biogeochemical coupling can be critical for assessing present‐day Arctic coastal ocean response to the rapidly changing environment. |
author2 |
LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Moss Landing Marine Laboratories NASA Jet Propulsion Laboratory Massachusetts Institute of Technology (MIT) Scripps Institution of Oceanography (SIO - UC San Diego) University of California San Diego (UC San Diego) University of California (UC)-University of California (UC) Takuvik International Research Laboratory Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) ACRI-HE |
format |
Article in Journal/Newspaper |
author |
Bertin, C. Carroll, D. Menemenlis, D. Dutkiewicz, S. Zhang, H. Matsuoka, A. Tank, S. Manizza, M. Miller, C. Babin, M. Mangin, A. Le Fouest, Vincent |
author_facet |
Bertin, C. Carroll, D. Menemenlis, D. Dutkiewicz, S. Zhang, H. Matsuoka, A. Tank, S. Manizza, M. Miller, C. Babin, M. Mangin, A. Le Fouest, Vincent |
author_sort |
Bertin, C. |
title |
Biogeochemical River Runoff Drives Intense Coastal Arctic Ocean CO2 Outgassing |
title_short |
Biogeochemical River Runoff Drives Intense Coastal Arctic Ocean CO2 Outgassing |
title_full |
Biogeochemical River Runoff Drives Intense Coastal Arctic Ocean CO2 Outgassing |
title_fullStr |
Biogeochemical River Runoff Drives Intense Coastal Arctic Ocean CO2 Outgassing |
title_full_unstemmed |
Biogeochemical River Runoff Drives Intense Coastal Arctic Ocean CO2 Outgassing |
title_sort |
biogeochemical river runoff drives intense coastal arctic ocean co2 outgassing |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04213868 https://doi.org/10.1029/2022GL102377 |
geographic |
Arctic Arctic Ocean Mackenzie River |
geographic_facet |
Arctic Arctic Ocean Mackenzie River |
genre |
Arctic Arctic Ocean Beaufort Sea Mackenzie river |
genre_facet |
Arctic Arctic Ocean Beaufort Sea Mackenzie river |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-04213868 Geophysical Research Letters, 2023, 50 (8), ⟨10.1029/2022GL102377⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2022GL102377 hal-04213868 https://hal.science/hal-04213868 doi:10.1029/2022GL102377 |
op_doi |
https://doi.org/10.1029/2022GL102377 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
8 |
_version_ |
1790596250543849472 |