A 37-year record of ocean acidification in the Southern California current
Abstract Long-term ocean time series have proven to be the most robust approach for direct observation of climate change processes such as Ocean Acidification. The California Cooperative Oceanic Fisheries Investigations (CalCOFI) program has collected quarterly samples for seawater inorganic carbon...
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ftdoajarticles:oai:doaj.org/article:cc39e529a98b4e29b55cfebeece74711 2023-12-10T09:52:24+01:00 A 37-year record of ocean acidification in the Southern California current Wiley H. Wolfe Todd R. Martz Andrew G. Dickson Ralf Goericke Mark D. Ohman 2023-11-01T00:00:00Z https://doi.org/10.1038/s43247-023-01065-0 https://doaj.org/article/cc39e529a98b4e29b55cfebeece74711 EN eng Nature Portfolio https://doi.org/10.1038/s43247-023-01065-0 https://doaj.org/toc/2662-4435 doi:10.1038/s43247-023-01065-0 2662-4435 https://doaj.org/article/cc39e529a98b4e29b55cfebeece74711 Communications Earth & Environment, Vol 4, Iss 1, Pp 1-7 (2023) Geology QE1-996.5 Environmental sciences GE1-350 article 2023 ftdoajarticles https://doi.org/10.1038/s43247-023-01065-0 2023-11-12T01:40:37Z Abstract Long-term ocean time series have proven to be the most robust approach for direct observation of climate change processes such as Ocean Acidification. The California Cooperative Oceanic Fisheries Investigations (CalCOFI) program has collected quarterly samples for seawater inorganic carbon since 1983. The longest time series is at CalCOFI line 90 station 90 from 1984–present, with a gap from 2002 to 2008. Here we present the first analysis of this 37- year time series, the oldest in the Pacific. Station 90.90 exhibits an unambiguous acidification signal in agreement with the global surface ocean (decrease in pH of −0.0015 ± 0.0001 yr−1), with a distinct seasonal cycle driven by temperature and total dissolved inorganic carbon. This provides direct evidence that the unique carbon chemistry signature (compared to other long standing time series) results in a reduced uptake rate of carbon dioxide (CO2) due to proximity to a mid-latitude eastern boundary current upwelling zone. Comparison to an independent empirical model estimate and climatology at the same location reveals regional differences not captured in the existing models. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Pacific Communications Earth & Environment 4 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 Environmental sciences GE1-350 |
spellingShingle |
Geology QE1-996.5 Environmental sciences GE1-350 Wiley H. Wolfe Todd R. Martz Andrew G. Dickson Ralf Goericke Mark D. Ohman A 37-year record of ocean acidification in the Southern California current |
topic_facet |
Geology QE1-996.5 Environmental sciences GE1-350 |
description |
Abstract Long-term ocean time series have proven to be the most robust approach for direct observation of climate change processes such as Ocean Acidification. The California Cooperative Oceanic Fisheries Investigations (CalCOFI) program has collected quarterly samples for seawater inorganic carbon since 1983. The longest time series is at CalCOFI line 90 station 90 from 1984–present, with a gap from 2002 to 2008. Here we present the first analysis of this 37- year time series, the oldest in the Pacific. Station 90.90 exhibits an unambiguous acidification signal in agreement with the global surface ocean (decrease in pH of −0.0015 ± 0.0001 yr−1), with a distinct seasonal cycle driven by temperature and total dissolved inorganic carbon. This provides direct evidence that the unique carbon chemistry signature (compared to other long standing time series) results in a reduced uptake rate of carbon dioxide (CO2) due to proximity to a mid-latitude eastern boundary current upwelling zone. Comparison to an independent empirical model estimate and climatology at the same location reveals regional differences not captured in the existing models. |
format |
Article in Journal/Newspaper |
author |
Wiley H. Wolfe Todd R. Martz Andrew G. Dickson Ralf Goericke Mark D. Ohman |
author_facet |
Wiley H. Wolfe Todd R. Martz Andrew G. Dickson Ralf Goericke Mark D. Ohman |
author_sort |
Wiley H. Wolfe |
title |
A 37-year record of ocean acidification in the Southern California current |
title_short |
A 37-year record of ocean acidification in the Southern California current |
title_full |
A 37-year record of ocean acidification in the Southern California current |
title_fullStr |
A 37-year record of ocean acidification in the Southern California current |
title_full_unstemmed |
A 37-year record of ocean acidification in the Southern California current |
title_sort |
37-year record of ocean acidification in the southern california current |
publisher |
Nature Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s43247-023-01065-0 https://doaj.org/article/cc39e529a98b4e29b55cfebeece74711 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-7 (2023) |
op_relation |
https://doi.org/10.1038/s43247-023-01065-0 https://doaj.org/toc/2662-4435 doi:10.1038/s43247-023-01065-0 2662-4435 https://doaj.org/article/cc39e529a98b4e29b55cfebeece74711 |
op_doi |
https://doi.org/10.1038/s43247-023-01065-0 |
container_title |
Communications Earth & Environment |
container_volume |
4 |
container_issue |
1 |
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1784898456111808512 |