Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles
Polar oceans are chemically sensitive to anthropogenic acidification due to their relatively low alkalinity and correspondingly weak carbonate buffering capacity. Here, we compare unique CO2 system observations covering complete annual cycles at an Arctic (Amundsen Gulf) and Antarctic site (Prydz Ba...
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Online Access: | https://doi.org/10.1038/srep02339 http://www.ncbi.nlm.nih.gov/pubmed/23903871 http://ecite.utas.edu.au/85756 |
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ftunivtasecite:oai:ecite.utas.edu.au:85756 2023-05-15T13:22:54+02:00 Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles Shadwick, EH Trull, T Thomas, H Gibson, JAE 2013 application/pdf https://doi.org/10.1038/srep02339 http://www.ncbi.nlm.nih.gov/pubmed/23903871 http://ecite.utas.edu.au/85756 en eng Nature Publishing Group http://ecite.utas.edu.au/85756/1/Shadwick_et_al_NatSciRep_2013.pdf http://dx.doi.org/10.1038/srep02339 Shadwick, EH and Trull, T and Thomas, H and Gibson, JAE, Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles, Scientific Reports, 3, (August) Article 2339. ISSN 2045-2322 (2013) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/23903871 http://ecite.utas.edu.au/85756 Earth Sciences Oceanography Chemical Oceanography Refereed Article PeerReviewed 2013 ftunivtasecite https://doi.org/10.1038/srep02339 2019-12-13T21:49:56Z Polar oceans are chemically sensitive to anthropogenic acidification due to their relatively low alkalinity and correspondingly weak carbonate buffering capacity. Here, we compare unique CO2 system observations covering complete annual cycles at an Arctic (Amundsen Gulf) and Antarctic site (Prydz Bay). The Arctic site experiences greater seasonal warming (10 vs 3C), and freshening (3 vs 2), has lower alkalinity (2220 vs 2320 μmol/kg), and lower summer pH (8.15 vs 8.5), than the Antarctic site. Despite a larger uptake of inorganic carbon by summer photosynthesis, the Arctic carbon system exhibits smaller seasonal changes than the more alkaline Antarctic system. In addition, the excess surface nutrients in the Antarctic may allow mitigation of acidification, via CO2 removal by enhanced summer production driven by iron inputs from glacial and sea-ice melting. These differences suggest that the Arctic system is more vulnerable to anthropogenic change due to lower alkalinity, enhanced warming, and nutrient limitation. Article in Journal/Newspaper Amundsen Gulf Antarc* Antarctic Arctic Arctic Prydz Bay Sea ice eCite UTAS (University of Tasmania) Antarctic Arctic Prydz Bay The Antarctic Scientific Reports 3 1 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Chemical Oceanography |
spellingShingle |
Earth Sciences Oceanography Chemical Oceanography Shadwick, EH Trull, T Thomas, H Gibson, JAE Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles |
topic_facet |
Earth Sciences Oceanography Chemical Oceanography |
description |
Polar oceans are chemically sensitive to anthropogenic acidification due to their relatively low alkalinity and correspondingly weak carbonate buffering capacity. Here, we compare unique CO2 system observations covering complete annual cycles at an Arctic (Amundsen Gulf) and Antarctic site (Prydz Bay). The Arctic site experiences greater seasonal warming (10 vs 3C), and freshening (3 vs 2), has lower alkalinity (2220 vs 2320 μmol/kg), and lower summer pH (8.15 vs 8.5), than the Antarctic site. Despite a larger uptake of inorganic carbon by summer photosynthesis, the Arctic carbon system exhibits smaller seasonal changes than the more alkaline Antarctic system. In addition, the excess surface nutrients in the Antarctic may allow mitigation of acidification, via CO2 removal by enhanced summer production driven by iron inputs from glacial and sea-ice melting. These differences suggest that the Arctic system is more vulnerable to anthropogenic change due to lower alkalinity, enhanced warming, and nutrient limitation. |
format |
Article in Journal/Newspaper |
author |
Shadwick, EH Trull, T Thomas, H Gibson, JAE |
author_facet |
Shadwick, EH Trull, T Thomas, H Gibson, JAE |
author_sort |
Shadwick, EH |
title |
Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles |
title_short |
Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles |
title_full |
Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles |
title_fullStr |
Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles |
title_full_unstemmed |
Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles |
title_sort |
vulnerability of polar oceans to anthropogenic acidification: comparison of arctic and antarctic seasonal cycles |
publisher |
Nature Publishing Group |
publishDate |
2013 |
url |
https://doi.org/10.1038/srep02339 http://www.ncbi.nlm.nih.gov/pubmed/23903871 http://ecite.utas.edu.au/85756 |
geographic |
Antarctic Arctic Prydz Bay The Antarctic |
geographic_facet |
Antarctic Arctic Prydz Bay The Antarctic |
genre |
Amundsen Gulf Antarc* Antarctic Arctic Arctic Prydz Bay Sea ice |
genre_facet |
Amundsen Gulf Antarc* Antarctic Arctic Arctic Prydz Bay Sea ice |
op_relation |
http://ecite.utas.edu.au/85756/1/Shadwick_et_al_NatSciRep_2013.pdf http://dx.doi.org/10.1038/srep02339 Shadwick, EH and Trull, T and Thomas, H and Gibson, JAE, Vulnerability of Polar Oceans to Anthropogenic Acidification: Comparison of Arctic and Antarctic Seasonal Cycles, Scientific Reports, 3, (August) Article 2339. ISSN 2045-2322 (2013) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/23903871 http://ecite.utas.edu.au/85756 |
op_doi |
https://doi.org/10.1038/srep02339 |
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Scientific Reports |
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3 |
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1 |
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1766367818979213312 |