High-resolution record of Northern Hemisphere climate extending into the last interglacial period
Two deep ice cores from central Greenland, drilled in the 1990s, have played a key role in climate reconstructions of the Northern Hemisphere, but the oldest sections of the cores were disturbed in chronology owing to ice folding near the bedrock. Here we present an undisturbed climate record from a...
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London, Springer Science and Business Media LLC
2022
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Online Access: | https://doi.org/10.1038/nature02805 http://infoscience.epfl.ch/record/298333 |
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ftinfoscience:oai:infoscience.epfl.ch:298333 2023-05-15T13:43:17+02:00 High-resolution record of Northern Hemisphere climate extending into the last interglacial period Andersen, K. K. Azuma, N. Barnola, J. M. Bigler, M. Biscaye, P. Caillon, N. Chappellaz, J. Clausen, H. B. DahlJensen, D. Fischer, H. Fluckiger, J. Fritzsche, D. Fujii, Y. Goto-Azuma, K. Gronvold, K. Gundestrup, N. S. Hansson, M. Huber, C. Hvidberg, C. S. Johnsen, S. J. Jonsell, U. Jouzel, J. Kipfstuhl, S. Landais, A. Leuenberger, M. Lorrain, R. Masson-Delmotte, V. Miller, H. Motoyama, H. Narita, H. Popp, T. Rasmussen, S. O. Raynaud, D. Rothlisberger, R. Ruth, U. Samyn, D. Schwander, J. Shoji, H. Siggard-Andersen, M. L. Steffensen, J. P. Stocker, T. Sveinbjornsdottir, A. E. Svensson, A. Takata, M. Tison, J. L. Thorsteinsson, T. Watanabe, O. Wilhelms, F. White, J. W. C. 2022-11-23T16:11:33Z https://doi.org/10.1038/nature02805 http://infoscience.epfl.ch/record/298333 unknown London, Springer Science and Business Media LLC doi:10.1038/nature02805 isi:000223746000034 http://infoscience.epfl.ch/record/298333 http://infoscience.epfl.ch/record/298333 Text 2022 ftinfoscience https://doi.org/10.1038/nature02805 2023-02-13T23:12:29Z Two deep ice cores from central Greenland, drilled in the 1990s, have played a key role in climate reconstructions of the Northern Hemisphere, but the oldest sections of the cores were disturbed in chronology owing to ice folding near the bedrock. Here we present an undisturbed climate record from a North Greenland ice core, which extends back to 123,000 years before the present, within the last interglacial period. The oxygen isotopes in the ice imply that climate was stable during the last interglacial period, with temperatures 5 °C warmer than today. We find unexpectedly large temperature differences between our new record from northern Greenland and the undisturbed sections of the cores from central Greenland, suggesting that the extent of ice in the Northern Hemisphere modulated the latitudinal temperature gradients in Greenland. This record shows a slow decline in temperatures that marked the initiation of the last glacial period. Our record reveals a hitherto unrecognized warm period initiated by an abrupt climate warming about 115,000 years ago, before glacial conditions were fully developed. This event does not appear to have an immediate Antarctic counterpart, suggesting that the climate see-saw between the hemispheres (which dominated the last glacial period) was not operating at this time. Text Antarc* Antarctic Greenland Greenland ice core ice core North Greenland EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Antarctic Greenland Nature 431 7005 147 151 |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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ftinfoscience |
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unknown |
description |
Two deep ice cores from central Greenland, drilled in the 1990s, have played a key role in climate reconstructions of the Northern Hemisphere, but the oldest sections of the cores were disturbed in chronology owing to ice folding near the bedrock. Here we present an undisturbed climate record from a North Greenland ice core, which extends back to 123,000 years before the present, within the last interglacial period. The oxygen isotopes in the ice imply that climate was stable during the last interglacial period, with temperatures 5 °C warmer than today. We find unexpectedly large temperature differences between our new record from northern Greenland and the undisturbed sections of the cores from central Greenland, suggesting that the extent of ice in the Northern Hemisphere modulated the latitudinal temperature gradients in Greenland. This record shows a slow decline in temperatures that marked the initiation of the last glacial period. Our record reveals a hitherto unrecognized warm period initiated by an abrupt climate warming about 115,000 years ago, before glacial conditions were fully developed. This event does not appear to have an immediate Antarctic counterpart, suggesting that the climate see-saw between the hemispheres (which dominated the last glacial period) was not operating at this time. |
format |
Text |
author |
Andersen, K. K. Azuma, N. Barnola, J. M. Bigler, M. Biscaye, P. Caillon, N. Chappellaz, J. Clausen, H. B. DahlJensen, D. Fischer, H. Fluckiger, J. Fritzsche, D. Fujii, Y. Goto-Azuma, K. Gronvold, K. Gundestrup, N. S. Hansson, M. Huber, C. Hvidberg, C. S. Johnsen, S. J. Jonsell, U. Jouzel, J. Kipfstuhl, S. Landais, A. Leuenberger, M. Lorrain, R. Masson-Delmotte, V. Miller, H. Motoyama, H. Narita, H. Popp, T. Rasmussen, S. O. Raynaud, D. Rothlisberger, R. Ruth, U. Samyn, D. Schwander, J. Shoji, H. Siggard-Andersen, M. L. Steffensen, J. P. Stocker, T. Sveinbjornsdottir, A. E. Svensson, A. Takata, M. Tison, J. L. Thorsteinsson, T. Watanabe, O. Wilhelms, F. White, J. W. C. |
spellingShingle |
Andersen, K. K. Azuma, N. Barnola, J. M. Bigler, M. Biscaye, P. Caillon, N. Chappellaz, J. Clausen, H. B. DahlJensen, D. Fischer, H. Fluckiger, J. Fritzsche, D. Fujii, Y. Goto-Azuma, K. Gronvold, K. Gundestrup, N. S. Hansson, M. Huber, C. Hvidberg, C. S. Johnsen, S. J. Jonsell, U. Jouzel, J. Kipfstuhl, S. Landais, A. Leuenberger, M. Lorrain, R. Masson-Delmotte, V. Miller, H. Motoyama, H. Narita, H. Popp, T. Rasmussen, S. O. Raynaud, D. Rothlisberger, R. Ruth, U. Samyn, D. Schwander, J. Shoji, H. Siggard-Andersen, M. L. Steffensen, J. P. Stocker, T. Sveinbjornsdottir, A. E. Svensson, A. Takata, M. Tison, J. L. Thorsteinsson, T. Watanabe, O. Wilhelms, F. White, J. W. C. High-resolution record of Northern Hemisphere climate extending into the last interglacial period |
author_facet |
Andersen, K. K. Azuma, N. Barnola, J. M. Bigler, M. Biscaye, P. Caillon, N. Chappellaz, J. Clausen, H. B. DahlJensen, D. Fischer, H. Fluckiger, J. Fritzsche, D. Fujii, Y. Goto-Azuma, K. Gronvold, K. Gundestrup, N. S. Hansson, M. Huber, C. Hvidberg, C. S. Johnsen, S. J. Jonsell, U. Jouzel, J. Kipfstuhl, S. Landais, A. Leuenberger, M. Lorrain, R. Masson-Delmotte, V. Miller, H. Motoyama, H. Narita, H. Popp, T. Rasmussen, S. O. Raynaud, D. Rothlisberger, R. Ruth, U. Samyn, D. Schwander, J. Shoji, H. Siggard-Andersen, M. L. Steffensen, J. P. Stocker, T. Sveinbjornsdottir, A. E. Svensson, A. Takata, M. Tison, J. L. Thorsteinsson, T. Watanabe, O. Wilhelms, F. White, J. W. C. |
author_sort |
Andersen, K. K. |
title |
High-resolution record of Northern Hemisphere climate extending into the last interglacial period |
title_short |
High-resolution record of Northern Hemisphere climate extending into the last interglacial period |
title_full |
High-resolution record of Northern Hemisphere climate extending into the last interglacial period |
title_fullStr |
High-resolution record of Northern Hemisphere climate extending into the last interglacial period |
title_full_unstemmed |
High-resolution record of Northern Hemisphere climate extending into the last interglacial period |
title_sort |
high-resolution record of northern hemisphere climate extending into the last interglacial period |
publisher |
London, Springer Science and Business Media LLC |
publishDate |
2022 |
url |
https://doi.org/10.1038/nature02805 http://infoscience.epfl.ch/record/298333 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland Greenland ice core ice core North Greenland |
genre_facet |
Antarc* Antarctic Greenland Greenland ice core ice core North Greenland |
op_source |
http://infoscience.epfl.ch/record/298333 |
op_relation |
doi:10.1038/nature02805 isi:000223746000034 http://infoscience.epfl.ch/record/298333 |
op_doi |
https://doi.org/10.1038/nature02805 |
container_title |
Nature |
container_volume |
431 |
container_issue |
7005 |
container_start_page |
147 |
op_container_end_page |
151 |
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1766186835177897984 |