Towards an improved organic carbon budget for the western Barents Sea shelf
There is generally a lack of knowledge on how marine organic carbon accumulation is linked to vertical export and primary productivity patterns in the Arctic Ocean. Despite the fact that annual primary production in the Arctic has increased as a consequence of shrinking sea ice, its effect on flux,...
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Online Access: | https://hdl.handle.net/10037/26529 https://doi.org/10.5194/cp-10-569-2014 |
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ftunivtroemsoe:oai:munin.uit.no:10037/26529 2023-05-15T14:24:25+02:00 Towards an improved organic carbon budget for the western Barents Sea shelf Pathirana, Irene Dorothea Knies, Jochen Felix, Maarten Mann, Ute 2014-03-21 https://hdl.handle.net/10037/26529 https://doi.org/10.5194/cp-10-569-2014 eng eng European Geosciences Union Climate of the Past Norges forskningsråd: 223259 info:eu-repo/grantAgreement/EC/FP7/238111/EU/THE CHANGING ARCTIC AND SUB-ARCTIC ENVIRONMENT: A RESEARCH AND TRAINING PROGRAMME ON MARINE BIOTIC INDICATORS OF RECENT CLIMATE CHANGES IN THE HIGH LATITUDES OF THE NORTH ATLANTIC/CASE/ Pathirana I, Knies J, Felix M, Mann U. Towards an improved organic carbon budget for the western Barents Sea shelf. Climate of the Past. 2014;10(2):569-587 FRIDAID 1341633 doi:10.5194/cp-10-569-2014 1814-9324 1814-9332 https://hdl.handle.net/10037/26529 openAccess Copyright 2014 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2014 ftunivtroemsoe https://doi.org/10.5194/cp-10-569-2014 2022-09-07T23:00:13Z There is generally a lack of knowledge on how marine organic carbon accumulation is linked to vertical export and primary productivity patterns in the Arctic Ocean. Despite the fact that annual primary production in the Arctic has increased as a consequence of shrinking sea ice, its effect on flux, preservation, and accumulation of organic carbon is still not well understood. In this study, a multi-proxy geochemical and organic-sedimentological approach is coupled with organic facies modelling, focusing on regional calculations of carbon cycling and carbon burial on the western Barents Shelf between northern Scandinavia and Svalbard. OF-Mod 3-D, an organic facies modelling software tool, is used to reconstruct and quantify the marine and terrestrial organic carbon fractions and to make inferences about marine primary productivity changes across the marginal ice zone (MIZ). By calibrating the model against an extensive set of sediment surface samples, we improve the Holocene organic carbon budget for ice-free and seasonally ice-covered areas in the western Barents Sea. The results show that higher organic carbon accumulation rates in the MIZ are best explained by enhanced surface water productivity compared to ice-free regions, implying that shrinking sea ice may reveal a significant effect on the overall organic carbon storage capacity of the western Barents Sea shelf. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Barents Sea Sea ice Svalbard ice covered areas University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Barents Sea Svalbard Climate of the Past 10 2 569 587 |
institution |
Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
There is generally a lack of knowledge on how marine organic carbon accumulation is linked to vertical export and primary productivity patterns in the Arctic Ocean. Despite the fact that annual primary production in the Arctic has increased as a consequence of shrinking sea ice, its effect on flux, preservation, and accumulation of organic carbon is still not well understood. In this study, a multi-proxy geochemical and organic-sedimentological approach is coupled with organic facies modelling, focusing on regional calculations of carbon cycling and carbon burial on the western Barents Shelf between northern Scandinavia and Svalbard. OF-Mod 3-D, an organic facies modelling software tool, is used to reconstruct and quantify the marine and terrestrial organic carbon fractions and to make inferences about marine primary productivity changes across the marginal ice zone (MIZ). By calibrating the model against an extensive set of sediment surface samples, we improve the Holocene organic carbon budget for ice-free and seasonally ice-covered areas in the western Barents Sea. The results show that higher organic carbon accumulation rates in the MIZ are best explained by enhanced surface water productivity compared to ice-free regions, implying that shrinking sea ice may reveal a significant effect on the overall organic carbon storage capacity of the western Barents Sea shelf. |
format |
Article in Journal/Newspaper |
author |
Pathirana, Irene Dorothea Knies, Jochen Felix, Maarten Mann, Ute |
spellingShingle |
Pathirana, Irene Dorothea Knies, Jochen Felix, Maarten Mann, Ute Towards an improved organic carbon budget for the western Barents Sea shelf |
author_facet |
Pathirana, Irene Dorothea Knies, Jochen Felix, Maarten Mann, Ute |
author_sort |
Pathirana, Irene Dorothea |
title |
Towards an improved organic carbon budget for the western Barents Sea shelf |
title_short |
Towards an improved organic carbon budget for the western Barents Sea shelf |
title_full |
Towards an improved organic carbon budget for the western Barents Sea shelf |
title_fullStr |
Towards an improved organic carbon budget for the western Barents Sea shelf |
title_full_unstemmed |
Towards an improved organic carbon budget for the western Barents Sea shelf |
title_sort |
towards an improved organic carbon budget for the western barents sea shelf |
publisher |
European Geosciences Union |
publishDate |
2014 |
url |
https://hdl.handle.net/10037/26529 https://doi.org/10.5194/cp-10-569-2014 |
geographic |
Arctic Arctic Ocean Barents Sea Svalbard |
geographic_facet |
Arctic Arctic Ocean Barents Sea Svalbard |
genre |
Arctic Arctic Arctic Ocean Barents Sea Sea ice Svalbard ice covered areas |
genre_facet |
Arctic Arctic Arctic Ocean Barents Sea Sea ice Svalbard ice covered areas |
op_relation |
Climate of the Past Norges forskningsråd: 223259 info:eu-repo/grantAgreement/EC/FP7/238111/EU/THE CHANGING ARCTIC AND SUB-ARCTIC ENVIRONMENT: A RESEARCH AND TRAINING PROGRAMME ON MARINE BIOTIC INDICATORS OF RECENT CLIMATE CHANGES IN THE HIGH LATITUDES OF THE NORTH ATLANTIC/CASE/ Pathirana I, Knies J, Felix M, Mann U. Towards an improved organic carbon budget for the western Barents Sea shelf. Climate of the Past. 2014;10(2):569-587 FRIDAID 1341633 doi:10.5194/cp-10-569-2014 1814-9324 1814-9332 https://hdl.handle.net/10037/26529 |
op_rights |
openAccess Copyright 2014 The Author(s) |
op_doi |
https://doi.org/10.5194/cp-10-569-2014 |
container_title |
Climate of the Past |
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10 |
container_issue |
2 |
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569 |
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587 |
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1766296832112066560 |