Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf
Given the rapid increase in atmospheric carbon dioxide concentrations (pCO2) over the industrial era there is a pressing need to construct long term records of natural carbon cycling prior to this perturbation and to develop a more robust understanding of the role the oceans play in the sequestratio...
Published in: | Global Biogeochemical Cycles |
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2017
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Online Access: | https://research.bangor.ac.uk/portal/en/researchoutputs/biological-and-climate-controls-on-north-atlantic-marine-carbon-dynamics-over-the-last-millennium-insights-from-an-absolutelydated-shell-based-record-from-the-north-icelandic-shelf(b8211678-0720-4cf3-9ce1-3ab8d74dabe8).html https://doi.org/10.1002/2017GB005708 https://research.bangor.ac.uk/ws/files/19843352/Reynolds_et_al_GBC_MS_submitted.pdf https://research.bangor.ac.uk/ws/files/20145188/2017_Biological_and_Climate_controls_on_North_Atlantic_Marine_Carbon_Dynamics.pdf |
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ftuwalesbangcris:oai:research.bangor.ac.uk:publications/b8211678-0720-4cf3-9ce1-3ab8d74dabe8 2024-09-30T14:31:37+00:00 Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf Richardson, Christopher Reynolds, David Scourse, James Butler, Paul Wanamaker, Alan Hall, Ian R. 2017-12 application/pdf https://research.bangor.ac.uk/portal/en/researchoutputs/biological-and-climate-controls-on-north-atlantic-marine-carbon-dynamics-over-the-last-millennium-insights-from-an-absolutelydated-shell-based-record-from-the-north-icelandic-shelf(b8211678-0720-4cf3-9ce1-3ab8d74dabe8).html https://doi.org/10.1002/2017GB005708 https://research.bangor.ac.uk/ws/files/19843352/Reynolds_et_al_GBC_MS_submitted.pdf https://research.bangor.ac.uk/ws/files/20145188/2017_Biological_and_Climate_controls_on_North_Atlantic_Marine_Carbon_Dynamics.pdf eng eng https://research.bangor.ac.uk/portal/en/researchoutputs/biological-and-climate-controls-on-north-atlantic-marine-carbon-dynamics-over-the-last-millennium-insights-from-an-absolutelydated-shell-based-record-from-the-north-icelandic-shelf(b8211678-0720-4cf3-9ce1-3ab8d74dabe8).html info:eu-repo/semantics/openAccess Richardson , C , Reynolds , D , Scourse , J , Butler , P , Wanamaker , A & Hall , I R 2017 , ' Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf ' , Global Biogeochemical Cycles , vol. 31 , no. 12 , pp. 1718-1735 . https://doi.org/10.1002/2017GB005708 carbon isotopes North Atlantic Arctica islandica Sclerochronology Productivity NAO article 2017 ftuwalesbangcris https://doi.org/10.1002/2017GB005708 2024-09-11T23:39:09Z Given the rapid increase in atmospheric carbon dioxide concentrations (pCO2) over the industrial era there is a pressing need to construct long term records of natural carbon cycling prior to this perturbation and to develop a more robust understanding of the role the oceans play in the sequestration of atmospheric carbon. Here we reconstruct the historical biological and climatic controls on the carbon isotopic (d13C-shell) composition of the North Icelandic shelf waters over the last millennium derived from the shells of the long-lived marine bivalve mollusc Arctica islandica. Variability in the annually resolved d13C-shell record is dominated by multi-decadal variability with a negative trend (-0.003±0.002‰yr-1) over the industrial era (1800-2000 CE). This trend is consistent with the marine Suess effect brought about by the sequestration of isotopically light carbon (d13C of CO2) derived from the burning of fossil fuels. Comparison of the d13C-shell record with contemporary proxy archives, over the last millennium, and instrumental data over the 20th century, highlight that both biological (primary production) and physical environmental factors such as relative shifts in the proportion of Subpolar Mode Waters and Arctic Intermediate Waters entrained onto the North Icelandic shelf, atmospheric circulation patterns associated with the winter North Atlantic Oscillation, and subpolar gyre sea surface temperatures and salinity, are the likely mechanisms that contribute to natural variations in seawater d13C variability on the North Icelandic shelf. Contrasting d13C fractionation processes associated with these biological and physical mechanisms likely cause the attenuated local marine Suess effect signal at this locality. Article in Journal/Newspaper Arctic Arctica islandica North Atlantic North Atlantic oscillation Bangor University: Research Portal Arctic Global Biogeochemical Cycles 31 12 1718 1735 |
institution |
Open Polar |
collection |
Bangor University: Research Portal |
op_collection_id |
ftuwalesbangcris |
language |
English |
topic |
carbon isotopes North Atlantic Arctica islandica Sclerochronology Productivity NAO |
spellingShingle |
carbon isotopes North Atlantic Arctica islandica Sclerochronology Productivity NAO Richardson, Christopher Reynolds, David Scourse, James Butler, Paul Wanamaker, Alan Hall, Ian R. Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf |
topic_facet |
carbon isotopes North Atlantic Arctica islandica Sclerochronology Productivity NAO |
description |
Given the rapid increase in atmospheric carbon dioxide concentrations (pCO2) over the industrial era there is a pressing need to construct long term records of natural carbon cycling prior to this perturbation and to develop a more robust understanding of the role the oceans play in the sequestration of atmospheric carbon. Here we reconstruct the historical biological and climatic controls on the carbon isotopic (d13C-shell) composition of the North Icelandic shelf waters over the last millennium derived from the shells of the long-lived marine bivalve mollusc Arctica islandica. Variability in the annually resolved d13C-shell record is dominated by multi-decadal variability with a negative trend (-0.003±0.002‰yr-1) over the industrial era (1800-2000 CE). This trend is consistent with the marine Suess effect brought about by the sequestration of isotopically light carbon (d13C of CO2) derived from the burning of fossil fuels. Comparison of the d13C-shell record with contemporary proxy archives, over the last millennium, and instrumental data over the 20th century, highlight that both biological (primary production) and physical environmental factors such as relative shifts in the proportion of Subpolar Mode Waters and Arctic Intermediate Waters entrained onto the North Icelandic shelf, atmospheric circulation patterns associated with the winter North Atlantic Oscillation, and subpolar gyre sea surface temperatures and salinity, are the likely mechanisms that contribute to natural variations in seawater d13C variability on the North Icelandic shelf. Contrasting d13C fractionation processes associated with these biological and physical mechanisms likely cause the attenuated local marine Suess effect signal at this locality. |
format |
Article in Journal/Newspaper |
author |
Richardson, Christopher Reynolds, David Scourse, James Butler, Paul Wanamaker, Alan Hall, Ian R. |
author_facet |
Richardson, Christopher Reynolds, David Scourse, James Butler, Paul Wanamaker, Alan Hall, Ian R. |
author_sort |
Richardson, Christopher |
title |
Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf |
title_short |
Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf |
title_full |
Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf |
title_fullStr |
Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf |
title_full_unstemmed |
Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf |
title_sort |
biological and climate controls on north atlantic marine carbon dynamics over the last millennium: insights from an absolutely-dated shell based record from the north icelandic shelf |
publishDate |
2017 |
url |
https://research.bangor.ac.uk/portal/en/researchoutputs/biological-and-climate-controls-on-north-atlantic-marine-carbon-dynamics-over-the-last-millennium-insights-from-an-absolutelydated-shell-based-record-from-the-north-icelandic-shelf(b8211678-0720-4cf3-9ce1-3ab8d74dabe8).html https://doi.org/10.1002/2017GB005708 https://research.bangor.ac.uk/ws/files/19843352/Reynolds_et_al_GBC_MS_submitted.pdf https://research.bangor.ac.uk/ws/files/20145188/2017_Biological_and_Climate_controls_on_North_Atlantic_Marine_Carbon_Dynamics.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctica islandica North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Arctica islandica North Atlantic North Atlantic oscillation |
op_source |
Richardson , C , Reynolds , D , Scourse , J , Butler , P , Wanamaker , A & Hall , I R 2017 , ' Biological and climate controls on North Atlantic marine carbon dynamics over the last millennium: Insights from an absolutely-dated shell based record from the North Icelandic Shelf ' , Global Biogeochemical Cycles , vol. 31 , no. 12 , pp. 1718-1735 . https://doi.org/10.1002/2017GB005708 |
op_relation |
https://research.bangor.ac.uk/portal/en/researchoutputs/biological-and-climate-controls-on-north-atlantic-marine-carbon-dynamics-over-the-last-millennium-insights-from-an-absolutelydated-shell-based-record-from-the-north-icelandic-shelf(b8211678-0720-4cf3-9ce1-3ab8d74dabe8).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2017GB005708 |
container_title |
Global Biogeochemical Cycles |
container_volume |
31 |
container_issue |
12 |
container_start_page |
1718 |
op_container_end_page |
1735 |
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1811636069768101888 |