Baseline Monitoring of the Western Arctic Ocean Estimates 20% of Canadian Basin Surface Waters Are Undersaturated With Respect to Aragonite
Marine surface waters are being acidified due to uptake of anthropogenic carbon dioxide, resulting in surface ocean areas of undersaturation with respect to carbonate minerals, including aragonite. In the Arctic Ocean, acidification is expected to occur at an accelerated rate with respect to the glo...
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Online Access: | https://digitalcommons.usf.edu/geo_facpub/205 https://doi.org/10.1371/journal.pone.0073796 |
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ftunisfloridatam:oai:digitalcommons.usf.edu:geo_facpub-1204 2023-05-15T14:48:18+02:00 Baseline Monitoring of the Western Arctic Ocean Estimates 20% of Canadian Basin Surface Waters Are Undersaturated With Respect to Aragonite Robbins, Lisa L. Wynn, Jonathan G. Lisle, John T. Yates, Kimberly K. Knorr, Paul Byrne, Robert H. Liu, Xuewu Patsavas, Mark C. Azetsu-Scott, Kumiko Takehashi, Taro 2013-09-01T07:00:00Z https://digitalcommons.usf.edu/geo_facpub/205 https://doi.org/10.1371/journal.pone.0073796 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/geo_facpub/205 https://doi.org/10.1371/journal.pone.0073796 default School of Geosciences Faculty and Staff Publications article 2013 ftunisfloridatam https://doi.org/10.1371/journal.pone.0073796 2021-10-09T07:15:24Z Marine surface waters are being acidified due to uptake of anthropogenic carbon dioxide, resulting in surface ocean areas of undersaturation with respect to carbonate minerals, including aragonite. In the Arctic Ocean, acidification is expected to occur at an accelerated rate with respect to the global oceans, but a paucity of baseline data has limited our understanding of the extent of Arctic undersaturation and of regional variations in rates and causes. The lack of data has also hindered refinement of models aimed at projecting future trends of ocean acidification. Here, based on more than 34,000 data records collected in 2010 and 2011, we establish a baseline of inorganic carbon data (pH, total alkalinity, dissolved inorganic carbon, partial pressure of carbon dioxide, and aragonite saturation index) for the western Arctic Ocean. This data set documents aragonite undersaturation in ∼20% of the surface waters of the combined Canada and Makarov basins, an area characterized by recent acceleration of sea ice loss. Conservative tracer studies using stable oxygen isotopic data from 307 sites show that while the entire surface of this area receives abundant freshwater from meteoric sources, freshwater from sea ice melt is most closely linked to the areas of carbonate mineral undersaturation. These data link the Arctic Ocean’s largest area of aragonite undersaturation to sea ice melt and atmospheric CO2 absorption in areas of low buffering capacity. Some relatively supersaturated areas can be linked to localized biological activity. Collectively, these observations can be used to project trends of ocean acidification in higher latitude marine surface waters where inorganic carbon chemistry is largely influenced by sea ice meltwater. Article in Journal/Newspaper Arctic Arctic Ocean Arctic Ocean Acidification Ocean acidification Sea ice Digital Commons University of South Florida (USF) Arctic Arctic Ocean Canada PLoS ONE 8 9 e73796 |
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Digital Commons University of South Florida (USF) |
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ftunisfloridatam |
language |
unknown |
description |
Marine surface waters are being acidified due to uptake of anthropogenic carbon dioxide, resulting in surface ocean areas of undersaturation with respect to carbonate minerals, including aragonite. In the Arctic Ocean, acidification is expected to occur at an accelerated rate with respect to the global oceans, but a paucity of baseline data has limited our understanding of the extent of Arctic undersaturation and of regional variations in rates and causes. The lack of data has also hindered refinement of models aimed at projecting future trends of ocean acidification. Here, based on more than 34,000 data records collected in 2010 and 2011, we establish a baseline of inorganic carbon data (pH, total alkalinity, dissolved inorganic carbon, partial pressure of carbon dioxide, and aragonite saturation index) for the western Arctic Ocean. This data set documents aragonite undersaturation in ∼20% of the surface waters of the combined Canada and Makarov basins, an area characterized by recent acceleration of sea ice loss. Conservative tracer studies using stable oxygen isotopic data from 307 sites show that while the entire surface of this area receives abundant freshwater from meteoric sources, freshwater from sea ice melt is most closely linked to the areas of carbonate mineral undersaturation. These data link the Arctic Ocean’s largest area of aragonite undersaturation to sea ice melt and atmospheric CO2 absorption in areas of low buffering capacity. Some relatively supersaturated areas can be linked to localized biological activity. Collectively, these observations can be used to project trends of ocean acidification in higher latitude marine surface waters where inorganic carbon chemistry is largely influenced by sea ice meltwater. |
format |
Article in Journal/Newspaper |
author |
Robbins, Lisa L. Wynn, Jonathan G. Lisle, John T. Yates, Kimberly K. Knorr, Paul Byrne, Robert H. Liu, Xuewu Patsavas, Mark C. Azetsu-Scott, Kumiko Takehashi, Taro |
spellingShingle |
Robbins, Lisa L. Wynn, Jonathan G. Lisle, John T. Yates, Kimberly K. Knorr, Paul Byrne, Robert H. Liu, Xuewu Patsavas, Mark C. Azetsu-Scott, Kumiko Takehashi, Taro Baseline Monitoring of the Western Arctic Ocean Estimates 20% of Canadian Basin Surface Waters Are Undersaturated With Respect to Aragonite |
author_facet |
Robbins, Lisa L. Wynn, Jonathan G. Lisle, John T. Yates, Kimberly K. Knorr, Paul Byrne, Robert H. Liu, Xuewu Patsavas, Mark C. Azetsu-Scott, Kumiko Takehashi, Taro |
author_sort |
Robbins, Lisa L. |
title |
Baseline Monitoring of the Western Arctic Ocean Estimates 20% of Canadian Basin Surface Waters Are Undersaturated With Respect to Aragonite |
title_short |
Baseline Monitoring of the Western Arctic Ocean Estimates 20% of Canadian Basin Surface Waters Are Undersaturated With Respect to Aragonite |
title_full |
Baseline Monitoring of the Western Arctic Ocean Estimates 20% of Canadian Basin Surface Waters Are Undersaturated With Respect to Aragonite |
title_fullStr |
Baseline Monitoring of the Western Arctic Ocean Estimates 20% of Canadian Basin Surface Waters Are Undersaturated With Respect to Aragonite |
title_full_unstemmed |
Baseline Monitoring of the Western Arctic Ocean Estimates 20% of Canadian Basin Surface Waters Are Undersaturated With Respect to Aragonite |
title_sort |
baseline monitoring of the western arctic ocean estimates 20% of canadian basin surface waters are undersaturated with respect to aragonite |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2013 |
url |
https://digitalcommons.usf.edu/geo_facpub/205 https://doi.org/10.1371/journal.pone.0073796 |
geographic |
Arctic Arctic Ocean Canada |
geographic_facet |
Arctic Arctic Ocean Canada |
genre |
Arctic Arctic Ocean Arctic Ocean Acidification Ocean acidification Sea ice |
genre_facet |
Arctic Arctic Ocean Arctic Ocean Acidification Ocean acidification Sea ice |
op_source |
School of Geosciences Faculty and Staff Publications |
op_relation |
https://digitalcommons.usf.edu/geo_facpub/205 https://doi.org/10.1371/journal.pone.0073796 |
op_rights |
default |
op_doi |
https://doi.org/10.1371/journal.pone.0073796 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
9 |
container_start_page |
e73796 |
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1766319391643795456 |