Late winter biogeochemical conditions under sea ice in the Canadian High Arctic
With the Arctic summer sea-ice extent in decline, questions are arising as to how changes in sea-ice dynamics might affect biogeochemical cycling and phenomena such as carbon dioxide (CO2) uptake and ocean acidification. Recent field research in these areas has concentrated on biogeochemical and CO2...
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Norwegian Polar Institute
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ftjpolarres:oai:journals.openacademia.net:article/3255 2024-06-23T07:48:51+00:00 Late winter biogeochemical conditions under sea ice in the Canadian High Arctic Findlay, Helen S. Edwards, Laura A. Lewis, Ceri N. Cooper, Glenn A. Clement, Robert Hardman-Mountford, Nick Vagle, Svein Miller, Lisa A. 2015-12-09 application/pdf text/html application/epub+zip application/xml https://polarresearch.net/index.php/polar/article/view/3255 https://doi.org/10.3402/polar.v%v.24170 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3255/pdf_53 https://polarresearch.net/index.php/polar/article/view/3255/html_48 https://polarresearch.net/index.php/polar/article/view/3255/_42 https://polarresearch.net/index.php/polar/article/view/3255/xml_47 https://polarresearch.net/index.php/polar/article/view/3255 doi:10.3402/polar.v%v.24170 Polar Research; Vol 34 (2015) 1751-8369 Sea ice carbon cycling biogeochemical cycles nutrients Arctic Ocean ocean acidification info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftjpolarres https://doi.org/10.3402/polar.v%v.24170 2024-06-13T23:33:00Z With the Arctic summer sea-ice extent in decline, questions are arising as to how changes in sea-ice dynamics might affect biogeochemical cycling and phenomena such as carbon dioxide (CO2) uptake and ocean acidification. Recent field research in these areas has concentrated on biogeochemical and CO2 measurements during spring, summer or autumn, but there are few data for the winter or winter–spring transition, particularly in the High Arctic. Here, we present carbon and nutrient data within and under sea ice measured during the Catlin Arctic Survey, over 40 days in March and April 2010, off Ellef Ringnes Island (78° 43.11′ N, 104° 47.44′ W) in the Canadian High Arctic. Results show relatively low surface water (1–10 m) nitrate (<1.3 µM) and total inorganic carbon concentrations (mean±SD=2015±5.83 µmol kg−1), total alkalinity (mean±SD=2134±11.09 µmol kg−1) and under-ice pCO2sw (mean±SD=286±17 µatm). These surprisingly low wintertime carbon and nutrient conditions suggest that the outer Canadian Arctic Archipelago region is nitrate-limited on account of sluggish mixing among the multi-year ice regions of the High Arctic, which could temper the potential of widespread under-ice and open-water phytoplankton blooms later in the season.Keywords: Sea ice; carbon cycling; biogeochemical cycles; nutrients; Arctic Ocean; ocean acidification.(Published: 9 December 2015)Citation: Polar Research 2015, 34, 24170, http://dx.doi.org/10.3402/polar.v34.24170 Article in Journal/Newspaper Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago Ellef Ringnes Island Ocean acidification Phytoplankton Polar Research Sea ice Polar Research Arctic Arctic Ocean Canadian Arctic Archipelago Ellef Ringnes Island ENVELOPE(-102.256,-102.256,78.502,78.502) Phytocoenologia 35 4 1067 1079 |
institution |
Open Polar |
collection |
Polar Research |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Sea ice carbon cycling biogeochemical cycles nutrients Arctic Ocean ocean acidification |
spellingShingle |
Sea ice carbon cycling biogeochemical cycles nutrients Arctic Ocean ocean acidification Findlay, Helen S. Edwards, Laura A. Lewis, Ceri N. Cooper, Glenn A. Clement, Robert Hardman-Mountford, Nick Vagle, Svein Miller, Lisa A. Late winter biogeochemical conditions under sea ice in the Canadian High Arctic |
topic_facet |
Sea ice carbon cycling biogeochemical cycles nutrients Arctic Ocean ocean acidification |
description |
With the Arctic summer sea-ice extent in decline, questions are arising as to how changes in sea-ice dynamics might affect biogeochemical cycling and phenomena such as carbon dioxide (CO2) uptake and ocean acidification. Recent field research in these areas has concentrated on biogeochemical and CO2 measurements during spring, summer or autumn, but there are few data for the winter or winter–spring transition, particularly in the High Arctic. Here, we present carbon and nutrient data within and under sea ice measured during the Catlin Arctic Survey, over 40 days in March and April 2010, off Ellef Ringnes Island (78° 43.11′ N, 104° 47.44′ W) in the Canadian High Arctic. Results show relatively low surface water (1–10 m) nitrate (<1.3 µM) and total inorganic carbon concentrations (mean±SD=2015±5.83 µmol kg−1), total alkalinity (mean±SD=2134±11.09 µmol kg−1) and under-ice pCO2sw (mean±SD=286±17 µatm). These surprisingly low wintertime carbon and nutrient conditions suggest that the outer Canadian Arctic Archipelago region is nitrate-limited on account of sluggish mixing among the multi-year ice regions of the High Arctic, which could temper the potential of widespread under-ice and open-water phytoplankton blooms later in the season.Keywords: Sea ice; carbon cycling; biogeochemical cycles; nutrients; Arctic Ocean; ocean acidification.(Published: 9 December 2015)Citation: Polar Research 2015, 34, 24170, http://dx.doi.org/10.3402/polar.v34.24170 |
format |
Article in Journal/Newspaper |
author |
Findlay, Helen S. Edwards, Laura A. Lewis, Ceri N. Cooper, Glenn A. Clement, Robert Hardman-Mountford, Nick Vagle, Svein Miller, Lisa A. |
author_facet |
Findlay, Helen S. Edwards, Laura A. Lewis, Ceri N. Cooper, Glenn A. Clement, Robert Hardman-Mountford, Nick Vagle, Svein Miller, Lisa A. |
author_sort |
Findlay, Helen S. |
title |
Late winter biogeochemical conditions under sea ice in the Canadian High Arctic |
title_short |
Late winter biogeochemical conditions under sea ice in the Canadian High Arctic |
title_full |
Late winter biogeochemical conditions under sea ice in the Canadian High Arctic |
title_fullStr |
Late winter biogeochemical conditions under sea ice in the Canadian High Arctic |
title_full_unstemmed |
Late winter biogeochemical conditions under sea ice in the Canadian High Arctic |
title_sort |
late winter biogeochemical conditions under sea ice in the canadian high arctic |
publisher |
Norwegian Polar Institute |
publishDate |
2015 |
url |
https://polarresearch.net/index.php/polar/article/view/3255 https://doi.org/10.3402/polar.v%v.24170 |
long_lat |
ENVELOPE(-102.256,-102.256,78.502,78.502) |
geographic |
Arctic Arctic Ocean Canadian Arctic Archipelago Ellef Ringnes Island |
geographic_facet |
Arctic Arctic Ocean Canadian Arctic Archipelago Ellef Ringnes Island |
genre |
Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago Ellef Ringnes Island Ocean acidification Phytoplankton Polar Research Sea ice |
genre_facet |
Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago Ellef Ringnes Island Ocean acidification Phytoplankton Polar Research Sea ice |
op_source |
Polar Research; Vol 34 (2015) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3255/pdf_53 https://polarresearch.net/index.php/polar/article/view/3255/html_48 https://polarresearch.net/index.php/polar/article/view/3255/_42 https://polarresearch.net/index.php/polar/article/view/3255/xml_47 https://polarresearch.net/index.php/polar/article/view/3255 doi:10.3402/polar.v%v.24170 |
op_doi |
https://doi.org/10.3402/polar.v%v.24170 |
container_title |
Phytocoenologia |
container_volume |
35 |
container_issue |
4 |
container_start_page |
1067 |
op_container_end_page |
1079 |
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1802639183273000960 |