The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean
The absorption of anthropogenic CO2 and atmospheric deposition of acidity can both contribute to the acidification of the global ocean. Rainfall pH measurements and chemical compositions monitored on the island of Bermuda since 1980, and a long-term seawater CO2 time-series (1983–2005) in the subtro...
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ftsouthampton:oai:eprints.soton.ac.uk:357436 2023-07-30T04:05:10+02:00 The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean Bates, Nicholas R. Peters, Andrew J. 2007-12-20 https://eprints.soton.ac.uk/357436/ English eng Bates, Nicholas R. and Peters, Andrew J. (2007) The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean. Marine Chemistry, 107 (4), 547-558. (doi:10.1016/j.marchem.2007.08.002 <http://dx.doi.org/10.1016/j.marchem.2007.08.002>). Article PeerReviewed 2007 ftsouthampton https://doi.org/10.1016/j.marchem.2007.08.002 2023-07-09T21:49:16Z The absorption of anthropogenic CO2 and atmospheric deposition of acidity can both contribute to the acidification of the global ocean. Rainfall pH measurements and chemical compositions monitored on the island of Bermuda since 1980, and a long-term seawater CO2 time-series (1983–2005) in the subtropical North Atlantic Ocean near Bermuda were used to evaluate the influence of acidic deposition on the acidification of oligotrophic waters of the North Atlantic Ocean and coastal waters of the coral reef ecosystem of Bermuda. Since the early 1980's, the average annual wet deposition of acidity at Bermuda was 15 ± 14 mmol m? 2 year? 1, while surface seawater pH decreased by 0.0017 ± 0.0001 pH units each year. The gradual acidification of subtropical gyre waters was primarily due to uptake of anthropogenic CO2. We estimate that direct atmospheric acid deposition contributed 2% to the acidification of surface waters in the subtropical North Atlantic Ocean, although this value likely represents an upper limit. Acidifying deposition had negligible influence on seawater CO2 chemistry of the Bermuda coral reef, with no evident impact on hard coral calcification. Article in Journal/Newspaper North Atlantic Ocean acidification University of Southampton: e-Prints Soton Marine Chemistry 107 4 547 558 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
The absorption of anthropogenic CO2 and atmospheric deposition of acidity can both contribute to the acidification of the global ocean. Rainfall pH measurements and chemical compositions monitored on the island of Bermuda since 1980, and a long-term seawater CO2 time-series (1983–2005) in the subtropical North Atlantic Ocean near Bermuda were used to evaluate the influence of acidic deposition on the acidification of oligotrophic waters of the North Atlantic Ocean and coastal waters of the coral reef ecosystem of Bermuda. Since the early 1980's, the average annual wet deposition of acidity at Bermuda was 15 ± 14 mmol m? 2 year? 1, while surface seawater pH decreased by 0.0017 ± 0.0001 pH units each year. The gradual acidification of subtropical gyre waters was primarily due to uptake of anthropogenic CO2. We estimate that direct atmospheric acid deposition contributed 2% to the acidification of surface waters in the subtropical North Atlantic Ocean, although this value likely represents an upper limit. Acidifying deposition had negligible influence on seawater CO2 chemistry of the Bermuda coral reef, with no evident impact on hard coral calcification. |
format |
Article in Journal/Newspaper |
author |
Bates, Nicholas R. Peters, Andrew J. |
spellingShingle |
Bates, Nicholas R. Peters, Andrew J. The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean |
author_facet |
Bates, Nicholas R. Peters, Andrew J. |
author_sort |
Bates, Nicholas R. |
title |
The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean |
title_short |
The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean |
title_full |
The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean |
title_fullStr |
The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean |
title_full_unstemmed |
The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean |
title_sort |
contribution of atmospheric acid deposition to ocean acidification in the subtropical north atlantic ocean |
publishDate |
2007 |
url |
https://eprints.soton.ac.uk/357436/ |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_relation |
Bates, Nicholas R. and Peters, Andrew J. (2007) The contribution of atmospheric acid deposition to ocean acidification in the subtropical North Atlantic Ocean. Marine Chemistry, 107 (4), 547-558. (doi:10.1016/j.marchem.2007.08.002 <http://dx.doi.org/10.1016/j.marchem.2007.08.002>). |
op_doi |
https://doi.org/10.1016/j.marchem.2007.08.002 |
container_title |
Marine Chemistry |
container_volume |
107 |
container_issue |
4 |
container_start_page |
547 |
op_container_end_page |
558 |
_version_ |
1772816924179169280 |