Ocean acidification in the surface waters of the Pacific-Arctic boundary regions
Author Posting. © The Oceanography Society, 2015. This article is posted here by permission of The Oceanography Society for personal use, not for redistribution. The definitive version was published in Oceanography 28, no. 2 (2015): 122-135, doi:10.5670/oceanog.2015.36. The continental shelves of th...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/7446 2023-05-15T15:02:02+02:00 Ocean acidification in the surface waters of the Pacific-Arctic boundary regions Mathis, Jeremy T. Cross, Jessica N. Evans, Wiley Doney, Scott C. 2015-06 application/pdf https://hdl.handle.net/1912/7446 en_US eng The Oceanography Society https://doi.org/10.5670/oceanog.2015.36 Oceanography 28, no. 2 (2015): 122-135 https://hdl.handle.net/1912/7446 doi:10.5670/oceanog.2015.36 Oceanography 28, no. 2 (2015): 122-135 doi:10.5670/oceanog.2015.36 Article 2015 ftwhoas https://doi.org/10.5670/oceanog.2015.36 2022-05-28T22:59:23Z Author Posting. © The Oceanography Society, 2015. This article is posted here by permission of The Oceanography Society for personal use, not for redistribution. The definitive version was published in Oceanography 28, no. 2 (2015): 122-135, doi:10.5670/oceanog.2015.36. The continental shelves of the Pacific-Arctic Region (PAR) are especially vulnerable to the effects of ocean acidification (OA) because the intrusion of anthropogenic CO2 is not the only process that can reduce pH and carbonate mineral saturation states for aragonite (Ωarag). Enhanced sea ice melt, respiration of organic matter, upwelling, and riverine inputs have been shown to exacerbate CO2 -driven ocean acidification in high-latitude regions. Additionally, the indirect effect of changing sea ice coverage is providing a positive feedback to OA as more open water will allow for greater uptake of atmospheric CO2 . Here, we compare model-based outputs from the Community Earth System Model with a subset of recent ship-based observations, and take an initial look at future model projections of surface water Ωarag in the Bering, Chukchi, and Beaufort Seas. We then use the model outputs to define benchmark years when biological impacts are likely to result from reduced Ωarag. Each of the three continental shelf seas in the PAR will become undersaturated with respect to aragonite at approximately 30-year intervals, indicating that aragonite undersaturations gradually progress upstream along the flow path of the waters as they move north from the Pacific Ocean. However, naturally high variability in Ωarag may indicate higher resilience of the Bering Sea ecosystem to these low-Ωarag conditions than the ecosystems of the Chukchi and the Beaufort Seas. Based on our initial results, we have determined that the annual mean for Ωarag will pass below the current range of natural variability in 2025 for the Beaufort Sea and 2027 for the Chukchi Sea. Because of the higher range of natural variability, the annual mean for Ωarag for the Bering Sea does not pass ... Article in Journal/Newspaper Arctic Beaufort Sea Bering Sea Chukchi Chukchi Sea Ocean acidification Pacific Arctic Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Bering Sea Chukchi Sea Pacific Oceanography 25 2 122 135 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
description |
Author Posting. © The Oceanography Society, 2015. This article is posted here by permission of The Oceanography Society for personal use, not for redistribution. The definitive version was published in Oceanography 28, no. 2 (2015): 122-135, doi:10.5670/oceanog.2015.36. The continental shelves of the Pacific-Arctic Region (PAR) are especially vulnerable to the effects of ocean acidification (OA) because the intrusion of anthropogenic CO2 is not the only process that can reduce pH and carbonate mineral saturation states for aragonite (Ωarag). Enhanced sea ice melt, respiration of organic matter, upwelling, and riverine inputs have been shown to exacerbate CO2 -driven ocean acidification in high-latitude regions. Additionally, the indirect effect of changing sea ice coverage is providing a positive feedback to OA as more open water will allow for greater uptake of atmospheric CO2 . Here, we compare model-based outputs from the Community Earth System Model with a subset of recent ship-based observations, and take an initial look at future model projections of surface water Ωarag in the Bering, Chukchi, and Beaufort Seas. We then use the model outputs to define benchmark years when biological impacts are likely to result from reduced Ωarag. Each of the three continental shelf seas in the PAR will become undersaturated with respect to aragonite at approximately 30-year intervals, indicating that aragonite undersaturations gradually progress upstream along the flow path of the waters as they move north from the Pacific Ocean. However, naturally high variability in Ωarag may indicate higher resilience of the Bering Sea ecosystem to these low-Ωarag conditions than the ecosystems of the Chukchi and the Beaufort Seas. Based on our initial results, we have determined that the annual mean for Ωarag will pass below the current range of natural variability in 2025 for the Beaufort Sea and 2027 for the Chukchi Sea. Because of the higher range of natural variability, the annual mean for Ωarag for the Bering Sea does not pass ... |
format |
Article in Journal/Newspaper |
author |
Mathis, Jeremy T. Cross, Jessica N. Evans, Wiley Doney, Scott C. |
spellingShingle |
Mathis, Jeremy T. Cross, Jessica N. Evans, Wiley Doney, Scott C. Ocean acidification in the surface waters of the Pacific-Arctic boundary regions |
author_facet |
Mathis, Jeremy T. Cross, Jessica N. Evans, Wiley Doney, Scott C. |
author_sort |
Mathis, Jeremy T. |
title |
Ocean acidification in the surface waters of the Pacific-Arctic boundary regions |
title_short |
Ocean acidification in the surface waters of the Pacific-Arctic boundary regions |
title_full |
Ocean acidification in the surface waters of the Pacific-Arctic boundary regions |
title_fullStr |
Ocean acidification in the surface waters of the Pacific-Arctic boundary regions |
title_full_unstemmed |
Ocean acidification in the surface waters of the Pacific-Arctic boundary regions |
title_sort |
ocean acidification in the surface waters of the pacific-arctic boundary regions |
publisher |
The Oceanography Society |
publishDate |
2015 |
url |
https://hdl.handle.net/1912/7446 |
geographic |
Arctic Bering Sea Chukchi Sea Pacific |
geographic_facet |
Arctic Bering Sea Chukchi Sea Pacific |
genre |
Arctic Beaufort Sea Bering Sea Chukchi Chukchi Sea Ocean acidification Pacific Arctic Sea ice |
genre_facet |
Arctic Beaufort Sea Bering Sea Chukchi Chukchi Sea Ocean acidification Pacific Arctic Sea ice |
op_source |
Oceanography 28, no. 2 (2015): 122-135 doi:10.5670/oceanog.2015.36 |
op_relation |
https://doi.org/10.5670/oceanog.2015.36 Oceanography 28, no. 2 (2015): 122-135 https://hdl.handle.net/1912/7446 doi:10.5670/oceanog.2015.36 |
op_doi |
https://doi.org/10.5670/oceanog.2015.36 |
container_title |
Oceanography |
container_volume |
25 |
container_issue |
2 |
container_start_page |
122 |
op_container_end_page |
135 |
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1766334030141194240 |