Aragonite saturation state dynamics in a coastal upwelling zone
Abstract: Coastal upwelling zones may be at enhanced risk from ocean acidification as upwelling brings low aragonite saturation state (Ω[subscript Ar]) waters to the surface that are further suppressed by anthropogenic CO₂. Ω[subscript Ar] was calculated with pH, pCO₂, and salinity-derived alkalinit...
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ftoregonstate:ir.library.oregonstate.edu:4m90dx12r 2024-04-14T08:17:44+00:00 Aragonite saturation state dynamics in a coastal upwelling zone Harris, Katherine E. DeGrandpre, Michael D. Hales, Burke https://ir.library.oregonstate.edu/concern/articles/4m90dx12r English [eng] eng unknown American Geophysical Union https://ir.library.oregonstate.edu/concern/articles/4m90dx12r Copyright Not Evaluated Article ftoregonstate 2024-03-21T15:41:55Z Abstract: Coastal upwelling zones may be at enhanced risk from ocean acidification as upwelling brings low aragonite saturation state (Ω[subscript Ar]) waters to the surface that are further suppressed by anthropogenic CO₂. Ω[subscript Ar] was calculated with pH, pCO₂, and salinity-derived alkalinity time series data from autonomous pH and pCO₂ instruments moored on the Oregon shelf and shelf break during different seasons from 2007 to 2011. Surface Ω[subscript Ar] values ranged between 0.66 ± 0.04 and 3.9 ± 0.04 compared to an estimated pre-industrial range of 1.0 ± 0.1 to 4.7 ± 0.1. Upwelling of high-CO₂ water and subsequent removal of CO₂ by phytoplankton imparts a dynamic range to Ω[subscript Ar] from ~1.0 to ~4.0 between spring and autumn. Freshwater input also suppresses saturation states during the spring. Winter Ω[subscript Ar] is less variable than during other seasons and is controlled primarily by mixing of the water column. Keywords: Oregon coast, biogeochemical processes, coastal upwelling, aragonite saturation states Article in Journal/Newspaper Ocean acidification ScholarsArchive@OSU (Oregon State University) |
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Open Polar |
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ScholarsArchive@OSU (Oregon State University) |
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ftoregonstate |
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English unknown |
description |
Abstract: Coastal upwelling zones may be at enhanced risk from ocean acidification as upwelling brings low aragonite saturation state (Ω[subscript Ar]) waters to the surface that are further suppressed by anthropogenic CO₂. Ω[subscript Ar] was calculated with pH, pCO₂, and salinity-derived alkalinity time series data from autonomous pH and pCO₂ instruments moored on the Oregon shelf and shelf break during different seasons from 2007 to 2011. Surface Ω[subscript Ar] values ranged between 0.66 ± 0.04 and 3.9 ± 0.04 compared to an estimated pre-industrial range of 1.0 ± 0.1 to 4.7 ± 0.1. Upwelling of high-CO₂ water and subsequent removal of CO₂ by phytoplankton imparts a dynamic range to Ω[subscript Ar] from ~1.0 to ~4.0 between spring and autumn. Freshwater input also suppresses saturation states during the spring. Winter Ω[subscript Ar] is less variable than during other seasons and is controlled primarily by mixing of the water column. Keywords: Oregon coast, biogeochemical processes, coastal upwelling, aragonite saturation states |
format |
Article in Journal/Newspaper |
author |
Harris, Katherine E. DeGrandpre, Michael D. Hales, Burke |
spellingShingle |
Harris, Katherine E. DeGrandpre, Michael D. Hales, Burke Aragonite saturation state dynamics in a coastal upwelling zone |
author_facet |
Harris, Katherine E. DeGrandpre, Michael D. Hales, Burke |
author_sort |
Harris, Katherine E. |
title |
Aragonite saturation state dynamics in a coastal upwelling zone |
title_short |
Aragonite saturation state dynamics in a coastal upwelling zone |
title_full |
Aragonite saturation state dynamics in a coastal upwelling zone |
title_fullStr |
Aragonite saturation state dynamics in a coastal upwelling zone |
title_full_unstemmed |
Aragonite saturation state dynamics in a coastal upwelling zone |
title_sort |
aragonite saturation state dynamics in a coastal upwelling zone |
publisher |
American Geophysical Union |
url |
https://ir.library.oregonstate.edu/concern/articles/4m90dx12r |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://ir.library.oregonstate.edu/concern/articles/4m90dx12r |
op_rights |
Copyright Not Evaluated |
_version_ |
1796317006720401408 |