Projected climate change impact on oceanic acidification
Abstract Background Anthropogenic CO 2 uptake by the ocean decreases the pH of seawater, leading to an 'acidification' which may have potential detrimental consequences on marine organisms 1 . Ocean warming or circulation alterations induced by climate change has the potential to slowdown...
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ftbiomed:oai:biomedcentral.com:1750-0680-1-2 2023-05-15T17:51:18+02:00 Projected climate change impact on oceanic acidification McNeil, Ben I Matear, Richard J 2006-06-27 http://www.cbmjournal.com/content/1/1/2 en eng BioMed Central Ltd. http://www.cbmjournal.com/content/1/1/2 Copyright 2006 McNeil and Matear; licensee BioMed Central Ltd. Research 2006 ftbiomed 2007-11-11T15:30:49Z Abstract Background Anthropogenic CO 2 uptake by the ocean decreases the pH of seawater, leading to an 'acidification' which may have potential detrimental consequences on marine organisms 1 . Ocean warming or circulation alterations induced by climate change has the potential to slowdown the rate of acidification of ocean waters by decreasing the amount of CO 2 uptake by the ocean 2 . However, a recent study showed that climate change affected the decrease in pH insignificantly 3 . Here, we examine the sensitivity of future oceanic acidification to climate change feedbacks within a coupled atmosphere-ocean model and find that ocean warming dominates the climate change feedbacks. Results Our results show that the direct decrease in pH due to ocean warming is approximately equal to but opposite in magnitude to the indirect increase in pH associated with ocean warming (ie reduced DIC concentration of the upper ocean caused by lower solubility of CO 2 ). Conclusion As climate change feedbacks on pH approximately cancel, future oceanic acidification will closely follow future atmospheric CO 2 concentrations. This suggests the only way to slowdown or mitigate the potential biological consequences of future ocean acidification is to significantly reduce fossil-fuel emissions of CO 2 to the atmosphere. Other/Unknown Material Ocean acidification BioMed Central |
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English |
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Abstract Background Anthropogenic CO 2 uptake by the ocean decreases the pH of seawater, leading to an 'acidification' which may have potential detrimental consequences on marine organisms 1 . Ocean warming or circulation alterations induced by climate change has the potential to slowdown the rate of acidification of ocean waters by decreasing the amount of CO 2 uptake by the ocean 2 . However, a recent study showed that climate change affected the decrease in pH insignificantly 3 . Here, we examine the sensitivity of future oceanic acidification to climate change feedbacks within a coupled atmosphere-ocean model and find that ocean warming dominates the climate change feedbacks. Results Our results show that the direct decrease in pH due to ocean warming is approximately equal to but opposite in magnitude to the indirect increase in pH associated with ocean warming (ie reduced DIC concentration of the upper ocean caused by lower solubility of CO 2 ). Conclusion As climate change feedbacks on pH approximately cancel, future oceanic acidification will closely follow future atmospheric CO 2 concentrations. This suggests the only way to slowdown or mitigate the potential biological consequences of future ocean acidification is to significantly reduce fossil-fuel emissions of CO 2 to the atmosphere. |
format |
Other/Unknown Material |
author |
McNeil, Ben I Matear, Richard J |
spellingShingle |
McNeil, Ben I Matear, Richard J Projected climate change impact on oceanic acidification |
author_facet |
McNeil, Ben I Matear, Richard J |
author_sort |
McNeil, Ben I |
title |
Projected climate change impact on oceanic acidification |
title_short |
Projected climate change impact on oceanic acidification |
title_full |
Projected climate change impact on oceanic acidification |
title_fullStr |
Projected climate change impact on oceanic acidification |
title_full_unstemmed |
Projected climate change impact on oceanic acidification |
title_sort |
projected climate change impact on oceanic acidification |
publisher |
BioMed Central Ltd. |
publishDate |
2006 |
url |
http://www.cbmjournal.com/content/1/1/2 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.cbmjournal.com/content/1/1/2 |
op_rights |
Copyright 2006 McNeil and Matear; licensee BioMed Central Ltd. |
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1766158412385615872 |