A transient rise in tropical sea surface temperature during the Paleocene-Eocene Thermal Maximum
The Paleocene-Eocene Thermal Maximum (PETM) has been attributed to a rapid rise in greenhouse gas levels. If so, warming should have occurred at all latitudes, although amplified toward the poles. Existing records reveal an increase in high-latitude sea surface temperatures (SSTs) (8° to 10°C) and i...
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Online Access: | http://hdl.handle.net/2434/458091 https://doi.org/10.1126/science.1090110 |
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ftunivmilanoair:oai:air.unimi.it:2434/458091 2024-01-28T10:07:12+01:00 A transient rise in tropical sea surface temperature during the Paleocene-Eocene Thermal Maximum J. C. Zachos M. W. Wara S. Bohaty M. L. Delaney A. Brill T. J. Bralower M.R. Petrizzo I. Premoli-Silva J.C. Zacho M.W. Wara S. Bohaty M.L. Delaney M.R. Petrizzo A. Brill T.J. Bralower I. Premoli-Silva 2003 http://hdl.handle.net/2434/458091 https://doi.org/10.1126/science.1090110 eng eng info:eu-repo/semantics/altIdentifier/pmid/14576441 info:eu-repo/semantics/altIdentifier/wos/WOS:000186802200039 volume:302 issue:5650 firstpage:1551 lastpage:1554 numberofpages:4 journal:SCIENCE http://hdl.handle.net/2434/458091 doi:10.1126/science.1090110 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0345690130 info:eu-repo/semantics/closedAccess oceanic methane hydrate planktonic-foraminifera latest paleocene atmospheric CO2 Settore GEO/01 - Paleontologia e Paleoecologia info:eu-repo/semantics/article 2003 ftunivmilanoair https://doi.org/10.1126/science.1090110 2024-01-02T23:41:15Z The Paleocene-Eocene Thermal Maximum (PETM) has been attributed to a rapid rise in greenhouse gas levels. If so, warming should have occurred at all latitudes, although amplified toward the poles. Existing records reveal an increase in high-latitude sea surface temperatures (SSTs) (8° to 10°C) and in bottom water temperatures (4° to 5°C). To date, however, the character of the tropical SST response during this event remains unconstrained. Here we address this deficiency by using paired oxygen isotope and minor element (magnesium/calcium) ratios of planktonic foraminifera from a tropical Pacific core to estimate changes in SST. Using mixed-layer foraminifera, we found that the combined proxies imply a 4° to 5°C rise in Pacific SST during the PETM. These results would necessitate a rise in atmospheric pCO 2 to levels three to four times as high as those estimated for the late Pateocene. Article in Journal/Newspaper Methane hydrate Planktonic foraminifera The University of Milan: Archivio Istituzionale della Ricerca (AIR) Pacific Science 302 5650 1551 1554 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
oceanic methane hydrate planktonic-foraminifera latest paleocene atmospheric CO2 Settore GEO/01 - Paleontologia e Paleoecologia |
spellingShingle |
oceanic methane hydrate planktonic-foraminifera latest paleocene atmospheric CO2 Settore GEO/01 - Paleontologia e Paleoecologia J. C. Zachos M. W. Wara S. Bohaty M. L. Delaney A. Brill T. J. Bralower M.R. Petrizzo I. Premoli-Silva A transient rise in tropical sea surface temperature during the Paleocene-Eocene Thermal Maximum |
topic_facet |
oceanic methane hydrate planktonic-foraminifera latest paleocene atmospheric CO2 Settore GEO/01 - Paleontologia e Paleoecologia |
description |
The Paleocene-Eocene Thermal Maximum (PETM) has been attributed to a rapid rise in greenhouse gas levels. If so, warming should have occurred at all latitudes, although amplified toward the poles. Existing records reveal an increase in high-latitude sea surface temperatures (SSTs) (8° to 10°C) and in bottom water temperatures (4° to 5°C). To date, however, the character of the tropical SST response during this event remains unconstrained. Here we address this deficiency by using paired oxygen isotope and minor element (magnesium/calcium) ratios of planktonic foraminifera from a tropical Pacific core to estimate changes in SST. Using mixed-layer foraminifera, we found that the combined proxies imply a 4° to 5°C rise in Pacific SST during the PETM. These results would necessitate a rise in atmospheric pCO 2 to levels three to four times as high as those estimated for the late Pateocene. |
author2 |
J.C. Zacho M.W. Wara S. Bohaty M.L. Delaney M.R. Petrizzo A. Brill T.J. Bralower I. Premoli-Silva |
format |
Article in Journal/Newspaper |
author |
J. C. Zachos M. W. Wara S. Bohaty M. L. Delaney A. Brill T. J. Bralower M.R. Petrizzo I. Premoli-Silva |
author_facet |
J. C. Zachos M. W. Wara S. Bohaty M. L. Delaney A. Brill T. J. Bralower M.R. Petrizzo I. Premoli-Silva |
author_sort |
J. C. Zachos |
title |
A transient rise in tropical sea surface temperature during the Paleocene-Eocene Thermal Maximum |
title_short |
A transient rise in tropical sea surface temperature during the Paleocene-Eocene Thermal Maximum |
title_full |
A transient rise in tropical sea surface temperature during the Paleocene-Eocene Thermal Maximum |
title_fullStr |
A transient rise in tropical sea surface temperature during the Paleocene-Eocene Thermal Maximum |
title_full_unstemmed |
A transient rise in tropical sea surface temperature during the Paleocene-Eocene Thermal Maximum |
title_sort |
transient rise in tropical sea surface temperature during the paleocene-eocene thermal maximum |
publishDate |
2003 |
url |
http://hdl.handle.net/2434/458091 https://doi.org/10.1126/science.1090110 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Methane hydrate Planktonic foraminifera |
genre_facet |
Methane hydrate Planktonic foraminifera |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/14576441 info:eu-repo/semantics/altIdentifier/wos/WOS:000186802200039 volume:302 issue:5650 firstpage:1551 lastpage:1554 numberofpages:4 journal:SCIENCE http://hdl.handle.net/2434/458091 doi:10.1126/science.1090110 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0345690130 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1126/science.1090110 |
container_title |
Science |
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302 |
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5650 |
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1551 |
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1554 |
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