Science advances / Speleothem record of mild and wet mid-Pleistocene climate in northeast Greenland
The five interglacials before the Mid-Brunhes Event (MBE) [c.430 thousand years (ka) ago] are generally considered to be globally cooler than those post-MBE. Inhomogeneities exist regionally, however, which suggest that the Arctic was warmer than present during Marine Isotope Stage (MIS) 15a. Using...
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American Association for the Advancement of Science
2021
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ftunivinnsbruck:oai:diglib.uibk.ac.at/:8930396 2023-10-01T03:53:34+02:00 Science advances / Speleothem record of mild and wet mid-Pleistocene climate in northeast Greenland Moseley, G.E. Edwards, R.L. Lord, N.S. Spötl, C. Cheng, H. UI:GA:GP 2021 text/html https://doi.org/10.1126/sciadv.abe1260 https://diglib.uibk.ac.at/doi/10.1126/sciadv.abe1260 https://resolver.obvsg.at/urn:nbn:at:at-ubi:3-34893 eng eng American Association for the Advancement of Science vignette : https://diglib.uibk.ac.at/titlepage/urn/urn:nbn:at:at-ubi:3-34893/128 vignette : https://diglib.uibk.ac.at/titlepage/doi/10.1126/sciadv.abe1260/128 2375-2548 doi:10.1126/sciadv.abe1260 https://diglib.uibk.ac.at/doi/10.1126/sciadv.abe1260 urn:nbn:at:at-ubi:3-34893 https://resolver.obvsg.at/urn:nbn:at:at-ubi:3-34893 local:99147472430003331 system:AC16905103 cc-by-nc_4 Text Article 2021 ftunivinnsbruck https://doi.org/10.1126/sciadv.abe1260 2023-09-05T02:34:37Z The five interglacials before the Mid-Brunhes Event (MBE) [c.430 thousand years (ka) ago] are generally considered to be globally cooler than those post-MBE. Inhomogeneities exist regionally, however, which suggest that the Arctic was warmer than present during Marine Isotope Stage (MIS) 15a. Using the first speleothem record for the High Arctic, we investigate the climatic response of northeast Greenland between c.588 and c.549 ka ago. Our results indicate an enhanced warmth of at least +3.5°C relative to the present, leading to permafrost thaw and increased precipitation. We find that δ18O of precipitation was at least 3‰ higher than today and recognize two local cooling events (c.571 and c.594 ka ago) thought to be caused by freshwater forcing. Our results are important for improving understanding of the regional climatic response leading up to the MBE and specifically provide insights into the climatic response of a warmer Arctic. Fonds zur Förderung der Wissenschaftlichen Forschung T 710-NBL Y 1162-N37 Version of record Article in Journal/Newspaper Arctic Greenland permafrost University of Innsbruck: Digital Library (Universitäts- und Landesbibliothek Tirol) Arctic Greenland Science Advances 7 13 |
institution |
Open Polar |
collection |
University of Innsbruck: Digital Library (Universitäts- und Landesbibliothek Tirol) |
op_collection_id |
ftunivinnsbruck |
language |
English |
description |
The five interglacials before the Mid-Brunhes Event (MBE) [c.430 thousand years (ka) ago] are generally considered to be globally cooler than those post-MBE. Inhomogeneities exist regionally, however, which suggest that the Arctic was warmer than present during Marine Isotope Stage (MIS) 15a. Using the first speleothem record for the High Arctic, we investigate the climatic response of northeast Greenland between c.588 and c.549 ka ago. Our results indicate an enhanced warmth of at least +3.5°C relative to the present, leading to permafrost thaw and increased precipitation. We find that δ18O of precipitation was at least 3‰ higher than today and recognize two local cooling events (c.571 and c.594 ka ago) thought to be caused by freshwater forcing. Our results are important for improving understanding of the regional climatic response leading up to the MBE and specifically provide insights into the climatic response of a warmer Arctic. Fonds zur Förderung der Wissenschaftlichen Forschung T 710-NBL Y 1162-N37 Version of record |
format |
Article in Journal/Newspaper |
author |
Moseley, G.E. Edwards, R.L. Lord, N.S. Spötl, C. Cheng, H. |
spellingShingle |
Moseley, G.E. Edwards, R.L. Lord, N.S. Spötl, C. Cheng, H. Science advances / Speleothem record of mild and wet mid-Pleistocene climate in northeast Greenland |
author_facet |
Moseley, G.E. Edwards, R.L. Lord, N.S. Spötl, C. Cheng, H. |
author_sort |
Moseley, G.E. |
title |
Science advances / Speleothem record of mild and wet mid-Pleistocene climate in northeast Greenland |
title_short |
Science advances / Speleothem record of mild and wet mid-Pleistocene climate in northeast Greenland |
title_full |
Science advances / Speleothem record of mild and wet mid-Pleistocene climate in northeast Greenland |
title_fullStr |
Science advances / Speleothem record of mild and wet mid-Pleistocene climate in northeast Greenland |
title_full_unstemmed |
Science advances / Speleothem record of mild and wet mid-Pleistocene climate in northeast Greenland |
title_sort |
science advances / speleothem record of mild and wet mid-pleistocene climate in northeast greenland |
publisher |
American Association for the Advancement of Science |
publishDate |
2021 |
url |
https://doi.org/10.1126/sciadv.abe1260 https://diglib.uibk.ac.at/doi/10.1126/sciadv.abe1260 https://resolver.obvsg.at/urn:nbn:at:at-ubi:3-34893 |
op_coverage |
UI:GA:GP |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland permafrost |
genre_facet |
Arctic Greenland permafrost |
op_relation |
vignette : https://diglib.uibk.ac.at/titlepage/urn/urn:nbn:at:at-ubi:3-34893/128 vignette : https://diglib.uibk.ac.at/titlepage/doi/10.1126/sciadv.abe1260/128 2375-2548 doi:10.1126/sciadv.abe1260 https://diglib.uibk.ac.at/doi/10.1126/sciadv.abe1260 urn:nbn:at:at-ubi:3-34893 https://resolver.obvsg.at/urn:nbn:at:at-ubi:3-34893 local:99147472430003331 system:AC16905103 |
op_rights |
cc-by-nc_4 |
op_doi |
https://doi.org/10.1126/sciadv.abe1260 |
container_title |
Science Advances |
container_volume |
7 |
container_issue |
13 |
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1778520192659226624 |