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Upwelling intensity and source water properties drive high interannual variability of corrosive events in the California Current
Ocean acidification is progressing rapidly in the California Current System (CCS), a region already susceptible to reduced aragonite saturation state due to seasonal coastal upwelling. Results from a high-resolution (~ 3 km), coupled physical-biogeochemical model highlight that the intensity, durati...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10415283/ https://www.ncbi.nlm.nih.gov/pubmed/37563186 http://dx.doi.org/10.1038/s41598-023-39691-5 |
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author | Cheresh, Julia Kroeker, Kristy J. Fiechter, Jerome |
author_facet | Cheresh, Julia Kroeker, Kristy J. Fiechter, Jerome |
author_sort | Cheresh, Julia |
collection | PubMed |
description | Ocean acidification is progressing rapidly in the California Current System (CCS), a region already susceptible to reduced aragonite saturation state due to seasonal coastal upwelling. Results from a high-resolution (~ 3 km), coupled physical-biogeochemical model highlight that the intensity, duration, and severity of undersaturation events exhibit high interannual variability along the central CCS shelfbreak. Variability in dissolved inorganic carbon (DIC) along the bottom of the 100-m isobath explains 70–90% of event severity variance over the range of latitudes where most severe conditions occur. An empirical orthogonal function (EOF) analysis further reveals that interannual event variability is explained by a combination coastal upwelling intensity and DIC content in upwelled source waters. Simulated regional DIC exhibits low frequency temporal variability resembling that of the Pacific Decadal Oscillation, and is explained by changes to water mass composition in the CCS. While regional DIC concentrations and upwelling intensity individually explain 9 and 43% of year-to-year variability in undersaturation event severity, their combined influence accounts for 66% of the variance. The mechanistic description of exposure to undersaturated conditions presented here provides important context for monitoring the progression of ocean acidification in the CCS and identifies conditions leading to increased vulnerability for ecologically and commercially important species. |
format | Online Article Text |
id | pubmed-10415283 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-104152832023-08-12 Upwelling intensity and source water properties drive high interannual variability of corrosive events in the California Current Cheresh, Julia Kroeker, Kristy J. Fiechter, Jerome Sci Rep Article Ocean acidification is progressing rapidly in the California Current System (CCS), a region already susceptible to reduced aragonite saturation state due to seasonal coastal upwelling. Results from a high-resolution (~ 3 km), coupled physical-biogeochemical model highlight that the intensity, duration, and severity of undersaturation events exhibit high interannual variability along the central CCS shelfbreak. Variability in dissolved inorganic carbon (DIC) along the bottom of the 100-m isobath explains 70–90% of event severity variance over the range of latitudes where most severe conditions occur. An empirical orthogonal function (EOF) analysis further reveals that interannual event variability is explained by a combination coastal upwelling intensity and DIC content in upwelled source waters. Simulated regional DIC exhibits low frequency temporal variability resembling that of the Pacific Decadal Oscillation, and is explained by changes to water mass composition in the CCS. While regional DIC concentrations and upwelling intensity individually explain 9 and 43% of year-to-year variability in undersaturation event severity, their combined influence accounts for 66% of the variance. The mechanistic description of exposure to undersaturated conditions presented here provides important context for monitoring the progression of ocean acidification in the CCS and identifies conditions leading to increased vulnerability for ecologically and commercially important species. Nature Publishing Group UK 2023-08-10 /pmc/articles/PMC10415283/ /pubmed/37563186 http://dx.doi.org/10.1038/s41598-023-39691-5 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Cheresh, Julia Kroeker, Kristy J. Fiechter, Jerome Upwelling intensity and source water properties drive high interannual variability of corrosive events in the California Current |
title | Upwelling intensity and source water properties drive high interannual variability of corrosive events in the California Current |
title_full | Upwelling intensity and source water properties drive high interannual variability of corrosive events in the California Current |
title_fullStr | Upwelling intensity and source water properties drive high interannual variability of corrosive events in the California Current |
title_full_unstemmed | Upwelling intensity and source water properties drive high interannual variability of corrosive events in the California Current |
title_short | Upwelling intensity and source water properties drive high interannual variability of corrosive events in the California Current |
title_sort | upwelling intensity and source water properties drive high interannual variability of corrosive events in the california current |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10415283/ https://www.ncbi.nlm.nih.gov/pubmed/37563186 http://dx.doi.org/10.1038/s41598-023-39691-5 |
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