Global cooling during the eocene-oligocene climate transition
About 34 million years ago, Earth's climate shifted from a relatively ice-free world to one with glacial conditions on Antarctica characterized by substantial ice sheets. How Earth's temperature changed during this climate transition remains poorly understood, and evidence for Northern Hem...
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American Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org
2009
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Online Access: | https://doi.org/10.1126/science.1166368 http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0036-8075&volume=323&spage=1187&epage=1190&date=2009&atitle=Global+cooling+during+the+Eocene-Oligocene+climate+transition http://hdl.handle.net/10722/58696 |
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ftunivhongkonghu:oai:hub.hku.hk:10722/58696 2023-05-15T14:00:15+02:00 Global cooling during the eocene-oligocene climate transition Brinkhuis, H Liu, Z Pagani, M Pearson, A Zinniker, D DeConto, R Leckie, RM Shah, SR Huber, M 2009 https://doi.org/10.1126/science.1166368 http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0036-8075&volume=323&spage=1187&epage=1190&date=2009&atitle=Global+cooling+during+the+Eocene-Oligocene+climate+transition http://hdl.handle.net/10722/58696 eng eng American Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org United States Science http://www.scopus.com/mlt/select.url?eid=2-s2.0-61349156757&selection=ref&src=s&origin=recordpage Science, 2009, v. 323 n. 5918, p. 1187-1190 5706637 doi:10.1126/science.1166368 1095-9203 1190 158086 WOS:000263687600031 0036-8075 5918 http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0036-8075&volume=323&spage=1187&epage=1190&date=2009&atitle=Global+cooling+during+the+Eocene-Oligocene+climate+transition eid_2-s2.0-61349156757 1187 http://hdl.handle.net/10722/58696 323 Science. Copyright © American Association for the Advancement of Science. Article 2009 ftunivhongkonghu https://doi.org/10.1126/science.1166368 2023-01-14T15:10:13Z About 34 million years ago, Earth's climate shifted from a relatively ice-free world to one with glacial conditions on Antarctica characterized by substantial ice sheets. How Earth's temperature changed during this climate transition remains poorly understood, and evidence for Northern Hemisphere polar ice is controversial. Here, we report proxy records of sea surface temperatures from multiple ocean localities and show that the high-latitude temperature decrease was substantial and heterogeneous. High-latitude (45 degrees to 70 degrees in both hemispheres) temperatures before the climate transition were ∼20°C and cooled an average of ∼5°C. Our results, combined with ocean and ice-sheet model simulations and benthic oxygen isotope records, indicate that Northern Hemisphere glaciation was not required to accommodate the magnitude of continental ice growth during this time. link_to_subscribed_fulltext Article in Journal/Newspaper Antarc* Antarctica Ice Sheet University of Hong Kong: HKU Scholars Hub Science 323 5918 1187 1190 |
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Open Polar |
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University of Hong Kong: HKU Scholars Hub |
op_collection_id |
ftunivhongkonghu |
language |
English |
description |
About 34 million years ago, Earth's climate shifted from a relatively ice-free world to one with glacial conditions on Antarctica characterized by substantial ice sheets. How Earth's temperature changed during this climate transition remains poorly understood, and evidence for Northern Hemisphere polar ice is controversial. Here, we report proxy records of sea surface temperatures from multiple ocean localities and show that the high-latitude temperature decrease was substantial and heterogeneous. High-latitude (45 degrees to 70 degrees in both hemispheres) temperatures before the climate transition were ∼20°C and cooled an average of ∼5°C. Our results, combined with ocean and ice-sheet model simulations and benthic oxygen isotope records, indicate that Northern Hemisphere glaciation was not required to accommodate the magnitude of continental ice growth during this time. link_to_subscribed_fulltext |
format |
Article in Journal/Newspaper |
author |
Brinkhuis, H Liu, Z Pagani, M Pearson, A Zinniker, D DeConto, R Leckie, RM Shah, SR Huber, M |
spellingShingle |
Brinkhuis, H Liu, Z Pagani, M Pearson, A Zinniker, D DeConto, R Leckie, RM Shah, SR Huber, M Global cooling during the eocene-oligocene climate transition |
author_facet |
Brinkhuis, H Liu, Z Pagani, M Pearson, A Zinniker, D DeConto, R Leckie, RM Shah, SR Huber, M |
author_sort |
Brinkhuis, H |
title |
Global cooling during the eocene-oligocene climate transition |
title_short |
Global cooling during the eocene-oligocene climate transition |
title_full |
Global cooling during the eocene-oligocene climate transition |
title_fullStr |
Global cooling during the eocene-oligocene climate transition |
title_full_unstemmed |
Global cooling during the eocene-oligocene climate transition |
title_sort |
global cooling during the eocene-oligocene climate transition |
publisher |
American Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org |
publishDate |
2009 |
url |
https://doi.org/10.1126/science.1166368 http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0036-8075&volume=323&spage=1187&epage=1190&date=2009&atitle=Global+cooling+during+the+Eocene-Oligocene+climate+transition http://hdl.handle.net/10722/58696 |
genre |
Antarc* Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctica Ice Sheet |
op_relation |
Science http://www.scopus.com/mlt/select.url?eid=2-s2.0-61349156757&selection=ref&src=s&origin=recordpage Science, 2009, v. 323 n. 5918, p. 1187-1190 5706637 doi:10.1126/science.1166368 1095-9203 1190 158086 WOS:000263687600031 0036-8075 5918 http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0036-8075&volume=323&spage=1187&epage=1190&date=2009&atitle=Global+cooling+during+the+Eocene-Oligocene+climate+transition eid_2-s2.0-61349156757 1187 http://hdl.handle.net/10722/58696 323 |
op_rights |
Science. Copyright © American Association for the Advancement of Science. |
op_doi |
https://doi.org/10.1126/science.1166368 |
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Science |
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323 |
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5918 |
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1187 |
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1190 |
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1766269296685613056 |