The Arctic Ocean marine carbon cycle: evaluation of air-sea CO 2 exchanges, ocean acidification impacts and potential feedbacks
At present, although seasonal sea-ice cover mitigates atmosphere-ocean gas exchange, the Arctic Ocean takes up carbon dioxide (CO 2 ) on the order of −66 to −199 Tg C year −1 (10 12 g C), contributing 5–14% to the global balance of CO 2 sinks and sources. Because of this, the Arctic Ocean has an imp...
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ftdoajarticles:oai:doaj.org/article:473b47db62964ecc89c779e13840e7ae 2023-05-15T14:33:47+02:00 The Arctic Ocean marine carbon cycle: evaluation of air-sea CO 2 exchanges, ocean acidification impacts and potential feedbacks N. R. Bates J. T. Mathis 2009-11-01T00:00:00Z https://doaj.org/article/473b47db62964ecc89c779e13840e7ae EN eng Copernicus Publications http://www.biogeosciences.net/6/2433/2009/bg-6-2433-2009.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/473b47db62964ecc89c779e13840e7ae Biogeosciences, Vol 6, Iss 11, Pp 2433-2459 (2009) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2009 ftdoajarticles 2022-12-31T00:41:23Z At present, although seasonal sea-ice cover mitigates atmosphere-ocean gas exchange, the Arctic Ocean takes up carbon dioxide (CO 2 ) on the order of −66 to −199 Tg C year −1 (10 12 g C), contributing 5–14% to the global balance of CO 2 sinks and sources. Because of this, the Arctic Ocean has an important influence on the global carbon cycle, with the marine carbon cycle and atmosphere-ocean CO 2 exchanges sensitive to Arctic Ocean and global climate change feedbacks. In the near-term, further sea-ice loss and increases in phytoplankton growth rates are expected to increase the uptake of CO 2 by Arctic Ocean surface waters, although mitigated somewhat by surface warming in the Arctic. Thus, the capacity of the Arctic Ocean to uptake CO 2 is expected to alter in response to environmental changes driven largely by climate. These changes are likely to continue to modify the physics, biogeochemistry, and ecology of the Arctic Ocean in ways that are not yet fully understood. In surface waters, sea-ice melt, river runoff, cooling and uptake of CO 2 through air-sea gas exchange combine to decrease the calcium carbonate (CaCO 3 ) mineral saturation states (Ω) of seawater while seasonal phytoplankton primary production (PP) mitigates this effect. Biological amplification of ocean acidification effects in subsurface waters, due to the remineralization of organic matter, is likely to reduce the ability of many species to produce CaCO 3 shells or tests with profound implications for Arctic marine ecosystems Article in Journal/Newspaper Arctic Arctic Ocean Climate change Ocean acidification Phytoplankton Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 N. R. Bates J. T. Mathis The Arctic Ocean marine carbon cycle: evaluation of air-sea CO 2 exchanges, ocean acidification impacts and potential feedbacks |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
At present, although seasonal sea-ice cover mitigates atmosphere-ocean gas exchange, the Arctic Ocean takes up carbon dioxide (CO 2 ) on the order of −66 to −199 Tg C year −1 (10 12 g C), contributing 5–14% to the global balance of CO 2 sinks and sources. Because of this, the Arctic Ocean has an important influence on the global carbon cycle, with the marine carbon cycle and atmosphere-ocean CO 2 exchanges sensitive to Arctic Ocean and global climate change feedbacks. In the near-term, further sea-ice loss and increases in phytoplankton growth rates are expected to increase the uptake of CO 2 by Arctic Ocean surface waters, although mitigated somewhat by surface warming in the Arctic. Thus, the capacity of the Arctic Ocean to uptake CO 2 is expected to alter in response to environmental changes driven largely by climate. These changes are likely to continue to modify the physics, biogeochemistry, and ecology of the Arctic Ocean in ways that are not yet fully understood. In surface waters, sea-ice melt, river runoff, cooling and uptake of CO 2 through air-sea gas exchange combine to decrease the calcium carbonate (CaCO 3 ) mineral saturation states (Ω) of seawater while seasonal phytoplankton primary production (PP) mitigates this effect. Biological amplification of ocean acidification effects in subsurface waters, due to the remineralization of organic matter, is likely to reduce the ability of many species to produce CaCO 3 shells or tests with profound implications for Arctic marine ecosystems |
format |
Article in Journal/Newspaper |
author |
N. R. Bates J. T. Mathis |
author_facet |
N. R. Bates J. T. Mathis |
author_sort |
N. R. Bates |
title |
The Arctic Ocean marine carbon cycle: evaluation of air-sea CO 2 exchanges, ocean acidification impacts and potential feedbacks |
title_short |
The Arctic Ocean marine carbon cycle: evaluation of air-sea CO 2 exchanges, ocean acidification impacts and potential feedbacks |
title_full |
The Arctic Ocean marine carbon cycle: evaluation of air-sea CO 2 exchanges, ocean acidification impacts and potential feedbacks |
title_fullStr |
The Arctic Ocean marine carbon cycle: evaluation of air-sea CO 2 exchanges, ocean acidification impacts and potential feedbacks |
title_full_unstemmed |
The Arctic Ocean marine carbon cycle: evaluation of air-sea CO 2 exchanges, ocean acidification impacts and potential feedbacks |
title_sort |
arctic ocean marine carbon cycle: evaluation of air-sea co 2 exchanges, ocean acidification impacts and potential feedbacks |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doaj.org/article/473b47db62964ecc89c779e13840e7ae |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change Ocean acidification Phytoplankton Sea ice |
genre_facet |
Arctic Arctic Ocean Climate change Ocean acidification Phytoplankton Sea ice |
op_source |
Biogeosciences, Vol 6, Iss 11, Pp 2433-2459 (2009) |
op_relation |
http://www.biogeosciences.net/6/2433/2009/bg-6-2433-2009.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/473b47db62964ecc89c779e13840e7ae |
_version_ |
1766306986266198016 |