50 year means of oxygen isotope data from ice core NGRIP
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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.586886 2023-05-15T13:57:23+02:00 50 year means of oxygen isotope data from ice core NGRIP North Greenland Ice Core Project Members LATITUDE: 75.100000 * LONGITUDE: -42.320000 * DATE/TIME START: 1996-07-01T00:00:00 * DATE/TIME END: 1996-07-01T00:00:00 * MINIMUM ELEVATION: 2917.0 m * MAXIMUM ELEVATION: 2917.0 m 2007-01-12 text/tab-separated-values, 4918 data points https://doi.pangaea.de/10.1594/PANGAEA.586886 https://doi.org/10.1594/PANGAEA.586886 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.586886 https://doi.org/10.1594/PANGAEA.586886 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: North Greenland Ice Core Project Members (2004): High-resolution record of Northern Hemisphere climate extending into the last interglacial period. Nature, 431, 147-151, https://doi.org/10.1038/nature02805 AGE Greenland ICEDRILL Ice drill NGRIP North Greenland Ice Core Project NorthGRIP Sampling/drilling ice δ18O water Dataset 2007 ftpangaea https://doi.org/10.1594/PANGAEA.586886 https://doi.org/10.1038/nature02805 2023-01-20T08:33:11Z 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. Dataset Antarc* Antarctic Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Greenland ENVELOPE(-42.320000,-42.320000,75.100000,75.100000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AGE Greenland ICEDRILL Ice drill NGRIP North Greenland Ice Core Project NorthGRIP Sampling/drilling ice δ18O water |
spellingShingle |
AGE Greenland ICEDRILL Ice drill NGRIP North Greenland Ice Core Project NorthGRIP Sampling/drilling ice δ18O water North Greenland Ice Core Project Members 50 year means of oxygen isotope data from ice core NGRIP |
topic_facet |
AGE Greenland ICEDRILL Ice drill NGRIP North Greenland Ice Core Project NorthGRIP Sampling/drilling ice δ18O water |
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 |
Dataset |
author |
North Greenland Ice Core Project Members |
author_facet |
North Greenland Ice Core Project Members |
author_sort |
North Greenland Ice Core Project Members |
title |
50 year means of oxygen isotope data from ice core NGRIP |
title_short |
50 year means of oxygen isotope data from ice core NGRIP |
title_full |
50 year means of oxygen isotope data from ice core NGRIP |
title_fullStr |
50 year means of oxygen isotope data from ice core NGRIP |
title_full_unstemmed |
50 year means of oxygen isotope data from ice core NGRIP |
title_sort |
50 year means of oxygen isotope data from ice core ngrip |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.586886 https://doi.org/10.1594/PANGAEA.586886 |
op_coverage |
LATITUDE: 75.100000 * LONGITUDE: -42.320000 * DATE/TIME START: 1996-07-01T00:00:00 * DATE/TIME END: 1996-07-01T00:00:00 * MINIMUM ELEVATION: 2917.0 m * MAXIMUM ELEVATION: 2917.0 m |
long_lat |
ENVELOPE(-42.320000,-42.320000,75.100000,75.100000) |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
genre_facet |
Antarc* Antarctic Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
op_source |
Supplement to: North Greenland Ice Core Project Members (2004): High-resolution record of Northern Hemisphere climate extending into the last interglacial period. Nature, 431, 147-151, https://doi.org/10.1038/nature02805 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.586886 https://doi.org/10.1594/PANGAEA.586886 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.586886 https://doi.org/10.1038/nature02805 |
_version_ |
1766265071354249216 |