Modeled Effect of Coastal Biogeochemical Processes, Climate Variability, and Ocean Acidification on Aragonite Saturation State in the Bering Sea
The Bering Sea is highly vulnerable to ocean acidification (OA) due to naturally cold, poorly buffered waters and ocean mixing processes. Harsh weather conditions within this rapidly changing, geographically remote environment have limited the quantity of carbon chemistry data, thereby hampering eff...
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ftdoajarticles:oai:doaj.org/article:2829a6542ea94c379925d7b08060fec9 2023-05-15T15:43:08+02:00 Modeled Effect of Coastal Biogeochemical Processes, Climate Variability, and Ocean Acidification on Aragonite Saturation State in the Bering Sea Darren J. Pilcher Danielle M. Naiman Jessica N. Cross Albert J. Hermann Samantha A. Siedlecki Georgina A. Gibson Jeremy T. Mathis 2019-01-01T00:00:00Z https://doi.org/10.3389/fmars.2018.00508 https://doaj.org/article/2829a6542ea94c379925d7b08060fec9 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2018.00508/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00508 https://doaj.org/article/2829a6542ea94c379925d7b08060fec9 Frontiers in Marine Science, Vol 5 (2019) ocean acidification aragonite saturation Bering Sea climate variability coastal carbon cycling coastal biogeochemistry Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2019 ftdoajarticles https://doi.org/10.3389/fmars.2018.00508 2022-12-31T11:23:28Z The Bering Sea is highly vulnerable to ocean acidification (OA) due to naturally cold, poorly buffered waters and ocean mixing processes. Harsh weather conditions within this rapidly changing, geographically remote environment have limited the quantity of carbon chemistry data, thereby hampering efforts to understand underlying spatial-temporal variability and detect long-term trends. We add carbonate chemistry to a regional biogeochemical model of the Bering Sea to explore the underlying mechanisms driving carbon dynamics over a decadal hindcast (2003–2012). The results illustrate that coastal processes generate considerable spatial variability in the biogeochemistry and vulnerability of Bering Sea shelf water to OA. Substantial seasonal biological productivity maintains high supersaturation of aragonite on the outer shelf, whereas riverine freshwater runoff loaded with allochthonous carbon decreases aragonite saturation states (ΩArag) to values below 1 on the inner shelf. Over the entire 2003–2012 model hindcast, annual surface ΩArag decreases by 0.025 – 0.04 units/year due to positive trends in the partial pressure of carbon dioxide (pCO2) in surface waters and dissolved inorganic carbon (DIC). Variability in this trend is driven by an increase in fall phytoplankton productivity and shelf carbon uptake, occurring during a transition from a relatively warm (2003–2005) to cold (2010–2012) temperature regime. Our results illustrate how local biogeochemical processes and climate variability can modify projected rates of OA within a coastal shelf system. Article in Journal/Newspaper Bering Sea Ocean acidification Directory of Open Access Journals: DOAJ Articles Bering Sea Frontiers in Marine Science 5 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ocean acidification aragonite saturation Bering Sea climate variability coastal carbon cycling coastal biogeochemistry Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
ocean acidification aragonite saturation Bering Sea climate variability coastal carbon cycling coastal biogeochemistry Science Q General. Including nature conservation geographical distribution QH1-199.5 Darren J. Pilcher Danielle M. Naiman Jessica N. Cross Albert J. Hermann Samantha A. Siedlecki Georgina A. Gibson Jeremy T. Mathis Modeled Effect of Coastal Biogeochemical Processes, Climate Variability, and Ocean Acidification on Aragonite Saturation State in the Bering Sea |
topic_facet |
ocean acidification aragonite saturation Bering Sea climate variability coastal carbon cycling coastal biogeochemistry Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
The Bering Sea is highly vulnerable to ocean acidification (OA) due to naturally cold, poorly buffered waters and ocean mixing processes. Harsh weather conditions within this rapidly changing, geographically remote environment have limited the quantity of carbon chemistry data, thereby hampering efforts to understand underlying spatial-temporal variability and detect long-term trends. We add carbonate chemistry to a regional biogeochemical model of the Bering Sea to explore the underlying mechanisms driving carbon dynamics over a decadal hindcast (2003–2012). The results illustrate that coastal processes generate considerable spatial variability in the biogeochemistry and vulnerability of Bering Sea shelf water to OA. Substantial seasonal biological productivity maintains high supersaturation of aragonite on the outer shelf, whereas riverine freshwater runoff loaded with allochthonous carbon decreases aragonite saturation states (ΩArag) to values below 1 on the inner shelf. Over the entire 2003–2012 model hindcast, annual surface ΩArag decreases by 0.025 – 0.04 units/year due to positive trends in the partial pressure of carbon dioxide (pCO2) in surface waters and dissolved inorganic carbon (DIC). Variability in this trend is driven by an increase in fall phytoplankton productivity and shelf carbon uptake, occurring during a transition from a relatively warm (2003–2005) to cold (2010–2012) temperature regime. Our results illustrate how local biogeochemical processes and climate variability can modify projected rates of OA within a coastal shelf system. |
format |
Article in Journal/Newspaper |
author |
Darren J. Pilcher Danielle M. Naiman Jessica N. Cross Albert J. Hermann Samantha A. Siedlecki Georgina A. Gibson Jeremy T. Mathis |
author_facet |
Darren J. Pilcher Danielle M. Naiman Jessica N. Cross Albert J. Hermann Samantha A. Siedlecki Georgina A. Gibson Jeremy T. Mathis |
author_sort |
Darren J. Pilcher |
title |
Modeled Effect of Coastal Biogeochemical Processes, Climate Variability, and Ocean Acidification on Aragonite Saturation State in the Bering Sea |
title_short |
Modeled Effect of Coastal Biogeochemical Processes, Climate Variability, and Ocean Acidification on Aragonite Saturation State in the Bering Sea |
title_full |
Modeled Effect of Coastal Biogeochemical Processes, Climate Variability, and Ocean Acidification on Aragonite Saturation State in the Bering Sea |
title_fullStr |
Modeled Effect of Coastal Biogeochemical Processes, Climate Variability, and Ocean Acidification on Aragonite Saturation State in the Bering Sea |
title_full_unstemmed |
Modeled Effect of Coastal Biogeochemical Processes, Climate Variability, and Ocean Acidification on Aragonite Saturation State in the Bering Sea |
title_sort |
modeled effect of coastal biogeochemical processes, climate variability, and ocean acidification on aragonite saturation state in the bering sea |
publisher |
Frontiers Media S.A. |
publishDate |
2019 |
url |
https://doi.org/10.3389/fmars.2018.00508 https://doaj.org/article/2829a6542ea94c379925d7b08060fec9 |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea Ocean acidification |
genre_facet |
Bering Sea Ocean acidification |
op_source |
Frontiers in Marine Science, Vol 5 (2019) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2018.00508/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00508 https://doaj.org/article/2829a6542ea94c379925d7b08060fec9 |
op_doi |
https://doi.org/10.3389/fmars.2018.00508 |
container_title |
Frontiers in Marine Science |
container_volume |
5 |
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1766377171317686272 |