Human-induced changes to the global ocean water masses and their time of emergence
The World Ocean is rapidly changing, with global and regional modification of temperature and salinity, resulting in widespread and irreversible impacts. While the most pronounced observed temperature and salinity changes are located in the upper ocean, changes in water masses at depth have been ide...
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ftosti:oai:osti.gov:1734978 2023-07-30T04:07:02+02:00 Human-induced changes to the global ocean water masses and their time of emergence Silvy, Yona Guilyardi, Eric Sallée, Jean-Baptiste Durack, Paul J. 2021-08-17 application/pdf http://www.osti.gov/servlets/purl/1734978 https://www.osti.gov/biblio/1734978 https://doi.org/10.1038/s41558-020-0878-x unknown http://www.osti.gov/servlets/purl/1734978 https://www.osti.gov/biblio/1734978 https://doi.org/10.1038/s41558-020-0878-x doi:10.1038/s41558-020-0878-x 54 ENVIRONMENTAL SCIENCES 2021 ftosti https://doi.org/10.1038/s41558-020-0878-x 2023-07-11T09:57:03Z The World Ocean is rapidly changing, with global and regional modification of temperature and salinity, resulting in widespread and irreversible impacts. While the most pronounced observed temperature and salinity changes are located in the upper ocean, changes in water masses at depth have been identified and will probably strengthen in the future. In this study, using 11 climate models, we define when anthropogenic temperature and salinity changes are expected to emerge from natural variability in the ocean interior along density surfaces. The models predict that in 2020, 20–55% of the Atlantic, Pacific and Indian basins have an emergent anthropogenic signal; reaching 40–65% in 2050 and 55–80% in 2080. The well-ventilated Southern Ocean water masses emerge very rapidly, as early as the 1980–1990s, while the Northern Hemisphere water masses emerge in the 2010–2030s. Our results highlight the importance of maintaining and augmenting an ocean observing system capable of detecting and monitoring persistent anthropogenic changes. Other/Unknown Material Southern Ocean SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Southern Ocean Pacific Indian Nature Climate Change 10 11 1030 1036 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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language |
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54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Silvy, Yona Guilyardi, Eric Sallée, Jean-Baptiste Durack, Paul J. Human-induced changes to the global ocean water masses and their time of emergence |
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54 ENVIRONMENTAL SCIENCES |
description |
The World Ocean is rapidly changing, with global and regional modification of temperature and salinity, resulting in widespread and irreversible impacts. While the most pronounced observed temperature and salinity changes are located in the upper ocean, changes in water masses at depth have been identified and will probably strengthen in the future. In this study, using 11 climate models, we define when anthropogenic temperature and salinity changes are expected to emerge from natural variability in the ocean interior along density surfaces. The models predict that in 2020, 20–55% of the Atlantic, Pacific and Indian basins have an emergent anthropogenic signal; reaching 40–65% in 2050 and 55–80% in 2080. The well-ventilated Southern Ocean water masses emerge very rapidly, as early as the 1980–1990s, while the Northern Hemisphere water masses emerge in the 2010–2030s. Our results highlight the importance of maintaining and augmenting an ocean observing system capable of detecting and monitoring persistent anthropogenic changes. |
author |
Silvy, Yona Guilyardi, Eric Sallée, Jean-Baptiste Durack, Paul J. |
author_facet |
Silvy, Yona Guilyardi, Eric Sallée, Jean-Baptiste Durack, Paul J. |
author_sort |
Silvy, Yona |
title |
Human-induced changes to the global ocean water masses and their time of emergence |
title_short |
Human-induced changes to the global ocean water masses and their time of emergence |
title_full |
Human-induced changes to the global ocean water masses and their time of emergence |
title_fullStr |
Human-induced changes to the global ocean water masses and their time of emergence |
title_full_unstemmed |
Human-induced changes to the global ocean water masses and their time of emergence |
title_sort |
human-induced changes to the global ocean water masses and their time of emergence |
publishDate |
2021 |
url |
http://www.osti.gov/servlets/purl/1734978 https://www.osti.gov/biblio/1734978 https://doi.org/10.1038/s41558-020-0878-x |
geographic |
Southern Ocean Pacific Indian |
geographic_facet |
Southern Ocean Pacific Indian |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://www.osti.gov/servlets/purl/1734978 https://www.osti.gov/biblio/1734978 https://doi.org/10.1038/s41558-020-0878-x doi:10.1038/s41558-020-0878-x |
op_doi |
https://doi.org/10.1038/s41558-020-0878-x |
container_title |
Nature Climate Change |
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10 |
container_issue |
11 |
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1030 |
op_container_end_page |
1036 |
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1772820113204969472 |