A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – Insights to an environment in transition
As elsewhere in the global ocean, the Gulf of Alaska is experiencing the rapid onset of ocean acidification (OA) driven by oceanic absorption of anthropogenic emissions of carbon dioxide from the atmosphere. In support of OA research and monitoring, we present here a data product of marine inorganic...
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ftcopernicus:oai:publications.copernicus.org:essdd114095 2023-10-09T21:54:56+02:00 A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – Insights to an environment in transition Monacci, Natalie M. Cross, Jessica N. Evans, Wiley Mathis, Jeremy T. Wang, Hongjie 2023-09-11 application/pdf https://doi.org/10.5194/essd-2023-325 https://essd.copernicus.org/preprints/essd-2023-325/ eng eng doi:10.5194/essd-2023-325 https://essd.copernicus.org/preprints/essd-2023-325/ eISSN: 1866-3516 Text 2023 ftcopernicus https://doi.org/10.5194/essd-2023-325 2023-09-18T16:24:17Z As elsewhere in the global ocean, the Gulf of Alaska is experiencing the rapid onset of ocean acidification (OA) driven by oceanic absorption of anthropogenic emissions of carbon dioxide from the atmosphere. In support of OA research and monitoring, we present here a data product of marine inorganic carbon chemistry parameters measured from seawater samples taken during biannual cruises between 2008 and 2017 in the northern Gulf of Alaska. Samples were collected each May and September over the 10–year period using a conductivity, temperature, depth (CTD) profiler coupled with a Niskin bottle rosette at stations including a long–term hydrographic survey transect known as the Gulf of Alaska (GAK) Line. This dataset includes discrete seawater measurements such as dissolved inorganic carbon and total alkalinity, which allows the calculation of other marine carbon parameters, including carbonate mineral saturation states, carbon dioxide (CO 2 ), and pH. Cumulative daily Bakun upwelling indices illustrate the pattern of downwelling in the northern Gulf of Alaska, with a period of relaxation spanning between the May and September cruises. The observed time and space variability impart challenges for disentangling the OA signal despite this dataset spanning a decade. However, this data product greatly enhances our understanding of seasonal and interannual variability on the marine inorganic carbon system parameters. The product can also aid in the ground truthing of biogeochemical models, refining estimates of sea–air CO 2 exchange, and determining appropriate CO 2 parameter ranges for experiments targeting potentially vulnerable species. Data are available at https://doi.org/10.25921/x9sg-9b08 (Monacci et al., 2023). Text Ocean acidification Alaska Copernicus Publications: E-Journals Gulf of Alaska |
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English |
description |
As elsewhere in the global ocean, the Gulf of Alaska is experiencing the rapid onset of ocean acidification (OA) driven by oceanic absorption of anthropogenic emissions of carbon dioxide from the atmosphere. In support of OA research and monitoring, we present here a data product of marine inorganic carbon chemistry parameters measured from seawater samples taken during biannual cruises between 2008 and 2017 in the northern Gulf of Alaska. Samples were collected each May and September over the 10–year period using a conductivity, temperature, depth (CTD) profiler coupled with a Niskin bottle rosette at stations including a long–term hydrographic survey transect known as the Gulf of Alaska (GAK) Line. This dataset includes discrete seawater measurements such as dissolved inorganic carbon and total alkalinity, which allows the calculation of other marine carbon parameters, including carbonate mineral saturation states, carbon dioxide (CO 2 ), and pH. Cumulative daily Bakun upwelling indices illustrate the pattern of downwelling in the northern Gulf of Alaska, with a period of relaxation spanning between the May and September cruises. The observed time and space variability impart challenges for disentangling the OA signal despite this dataset spanning a decade. However, this data product greatly enhances our understanding of seasonal and interannual variability on the marine inorganic carbon system parameters. The product can also aid in the ground truthing of biogeochemical models, refining estimates of sea–air CO 2 exchange, and determining appropriate CO 2 parameter ranges for experiments targeting potentially vulnerable species. Data are available at https://doi.org/10.25921/x9sg-9b08 (Monacci et al., 2023). |
format |
Text |
author |
Monacci, Natalie M. Cross, Jessica N. Evans, Wiley Mathis, Jeremy T. Wang, Hongjie |
spellingShingle |
Monacci, Natalie M. Cross, Jessica N. Evans, Wiley Mathis, Jeremy T. Wang, Hongjie A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – Insights to an environment in transition |
author_facet |
Monacci, Natalie M. Cross, Jessica N. Evans, Wiley Mathis, Jeremy T. Wang, Hongjie |
author_sort |
Monacci, Natalie M. |
title |
A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – Insights to an environment in transition |
title_short |
A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – Insights to an environment in transition |
title_full |
A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – Insights to an environment in transition |
title_fullStr |
A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – Insights to an environment in transition |
title_full_unstemmed |
A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – Insights to an environment in transition |
title_sort |
decade of marine inorganic carbon chemistry observations in the northern gulf of alaska – insights to an environment in transition |
publishDate |
2023 |
url |
https://doi.org/10.5194/essd-2023-325 https://essd.copernicus.org/preprints/essd-2023-325/ |
geographic |
Gulf of Alaska |
geographic_facet |
Gulf of Alaska |
genre |
Ocean acidification Alaska |
genre_facet |
Ocean acidification Alaska |
op_source |
eISSN: 1866-3516 |
op_relation |
doi:10.5194/essd-2023-325 https://essd.copernicus.org/preprints/essd-2023-325/ |
op_doi |
https://doi.org/10.5194/essd-2023-325 |
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1779318682981236736 |