Mean global ocean temperatures during the last glacial transition
Little is known about the ocean temperature's long-term response to climate perturbations owing to limited observations and a lack of robust reconstructions. Although most of the anthropogenic heat added to the climate system has been taken up by the ocean up until now, its role in a century an...
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ftcdlib:oai:escholarship.org:ark:/13030/qt2q28m2k6 2023-11-05T03:34:05+01:00 Mean global ocean temperatures during the last glacial transition Bereiter, Bernhard Shackleton, Sarah Baggenstos, Daniel Kawamura, Kenji Severinghaus, Jeff 39 - 44 2018-01-01 application/pdf https://escholarship.org/uc/item/2q28m2k6 unknown eScholarship, University of California qt2q28m2k6 https://escholarship.org/uc/item/2q28m2k6 public Nature, vol 553, iss 7686 Earth Sciences Oceanography Physical Geography and Environmental Geoscience Geology Climate Action Life Below Water Antarctic Regions Atmosphere Carbon Dioxide Climate History 21st Century Ancient Hot Temperature Ice Cover Noble Gases Oceans and Seas Seasons Temperature General Science & Technology article 2018 ftcdlib 2023-10-09T18:04:13Z Little is known about the ocean temperature's long-term response to climate perturbations owing to limited observations and a lack of robust reconstructions. Although most of the anthropogenic heat added to the climate system has been taken up by the ocean up until now, its role in a century and beyond is uncertain. Here, using noble gases trapped in ice cores, we show that the mean global ocean temperature increased by 2.57 ± 0.24 degrees Celsius over the last glacial transition (20,000 to 10,000 years ago). Our reconstruction provides unprecedented precision and temporal resolution for the integrated global ocean, in contrast to the depth-, region-, organism- and season-specific estimates provided by other methods. We find that the mean global ocean temperature is closely correlated with Antarctic temperature and has no lead or lag with atmospheric CO2, thereby confirming the important role of Southern Hemisphere climate in global climate trends. We also reveal an enigmatic 700-year warming during the early Younger Dryas period (about 12,000 years ago) that surpasses estimates of modern ocean heat uptake. Article in Journal/Newspaper Antarc* Antarctic University of California: eScholarship |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Earth Sciences Oceanography Physical Geography and Environmental Geoscience Geology Climate Action Life Below Water Antarctic Regions Atmosphere Carbon Dioxide Climate History 21st Century Ancient Hot Temperature Ice Cover Noble Gases Oceans and Seas Seasons Temperature General Science & Technology |
spellingShingle |
Earth Sciences Oceanography Physical Geography and Environmental Geoscience Geology Climate Action Life Below Water Antarctic Regions Atmosphere Carbon Dioxide Climate History 21st Century Ancient Hot Temperature Ice Cover Noble Gases Oceans and Seas Seasons Temperature General Science & Technology Bereiter, Bernhard Shackleton, Sarah Baggenstos, Daniel Kawamura, Kenji Severinghaus, Jeff Mean global ocean temperatures during the last glacial transition |
topic_facet |
Earth Sciences Oceanography Physical Geography and Environmental Geoscience Geology Climate Action Life Below Water Antarctic Regions Atmosphere Carbon Dioxide Climate History 21st Century Ancient Hot Temperature Ice Cover Noble Gases Oceans and Seas Seasons Temperature General Science & Technology |
description |
Little is known about the ocean temperature's long-term response to climate perturbations owing to limited observations and a lack of robust reconstructions. Although most of the anthropogenic heat added to the climate system has been taken up by the ocean up until now, its role in a century and beyond is uncertain. Here, using noble gases trapped in ice cores, we show that the mean global ocean temperature increased by 2.57 ± 0.24 degrees Celsius over the last glacial transition (20,000 to 10,000 years ago). Our reconstruction provides unprecedented precision and temporal resolution for the integrated global ocean, in contrast to the depth-, region-, organism- and season-specific estimates provided by other methods. We find that the mean global ocean temperature is closely correlated with Antarctic temperature and has no lead or lag with atmospheric CO2, thereby confirming the important role of Southern Hemisphere climate in global climate trends. We also reveal an enigmatic 700-year warming during the early Younger Dryas period (about 12,000 years ago) that surpasses estimates of modern ocean heat uptake. |
format |
Article in Journal/Newspaper |
author |
Bereiter, Bernhard Shackleton, Sarah Baggenstos, Daniel Kawamura, Kenji Severinghaus, Jeff |
author_facet |
Bereiter, Bernhard Shackleton, Sarah Baggenstos, Daniel Kawamura, Kenji Severinghaus, Jeff |
author_sort |
Bereiter, Bernhard |
title |
Mean global ocean temperatures during the last glacial transition |
title_short |
Mean global ocean temperatures during the last glacial transition |
title_full |
Mean global ocean temperatures during the last glacial transition |
title_fullStr |
Mean global ocean temperatures during the last glacial transition |
title_full_unstemmed |
Mean global ocean temperatures during the last glacial transition |
title_sort |
mean global ocean temperatures during the last glacial transition |
publisher |
eScholarship, University of California |
publishDate |
2018 |
url |
https://escholarship.org/uc/item/2q28m2k6 |
op_coverage |
39 - 44 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Nature, vol 553, iss 7686 |
op_relation |
qt2q28m2k6 https://escholarship.org/uc/item/2q28m2k6 |
op_rights |
public |
_version_ |
1781702696231763968 |