Persistent link between solar activity and Greenland climate during the Last Glacial Maximum
Changes in solar activity have previously been proposed to cause decadal- to millennial-scale fluctuations in both the modern and Holocene climates 1 . Direct observational records of solar activity, such as sunspot numbers, exist for only the past few hundred years, so solar variability for earlier...
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Online Access: | https://doi.org/10.1038/ngeo2225 |
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fteawag:oai:dora:eawag_7756 2024-09-15T18:08:46+00:00 Persistent link between solar activity and Greenland climate during the Last Glacial Maximum Adolphi, Florian Muscheler, Raimund Svensson, Ander Aldahan, Ala Possnert, Göran Beer, Jürg Sjolte, Jesper Björck, Svante Matthes, Katja Thiéblemont, Rémi 2014 https://doi.org/10.1038/ngeo2225 eng eng Springer Nature Nature Geoscience--Nat. Geosci.--journals:2182--1752-0894--1752-0908 eawag:7756 journal id: journals:2182 issn: 1752-0894 e-issn: 1752-0908 ut: 000341635600015 local: 16943 scopus: 2-s2.0-84906822109 doi:10.1038/ngeo2225 uri: pmid: Text Journal Article 2014 fteawag https://doi.org/10.1038/ngeo2225 2024-08-05T03:04:28Z Changes in solar activity have previously been proposed to cause decadal- to millennial-scale fluctuations in both the modern and Holocene climates 1 . Direct observational records of solar activity, such as sunspot numbers, exist for only the past few hundred years, so solar variability for earlier periods is typically reconstructed from measurements of cosmogenic radionuclides such as 10 Be and 14 C from ice cores and tree rings 2 , 3 . Here we present a high-resolution 10 Be record from the ice core collected from central Greenland by the Greenland Ice Core Project (GRIP). The record spans from 22,500 to 10,000 years ago, and is based on new and compiled data 4 , 5 , 6 . Using 14 C records 7 , 8 to control for climate-related influences on 10 Be deposition, we reconstruct centennial changes in solar activity. We find that during the Last Glacial Maximum, solar minima correlate with more negative δ 18 O values of ice and are accompanied by increased snow accumulation and sea-salt input over central Greenland. We suggest that solar minima could have induced changes in the stratosphere that favour the development of high-pressure blocking systems located to the south of Greenland, as has been found in observations and model simulations for recent climate 9 , 10 . We conclude that the mechanism behind solar forcing of regional climate change may have been similar under both modern and Last Glacial Maximum climate conditions. Article in Journal/Newspaper Greenland Greenland ice core Greenland Ice core Project GRIP ice core DORA Eawag Nature Geoscience 7 9 662 666 |
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Changes in solar activity have previously been proposed to cause decadal- to millennial-scale fluctuations in both the modern and Holocene climates 1 . Direct observational records of solar activity, such as sunspot numbers, exist for only the past few hundred years, so solar variability for earlier periods is typically reconstructed from measurements of cosmogenic radionuclides such as 10 Be and 14 C from ice cores and tree rings 2 , 3 . Here we present a high-resolution 10 Be record from the ice core collected from central Greenland by the Greenland Ice Core Project (GRIP). The record spans from 22,500 to 10,000 years ago, and is based on new and compiled data 4 , 5 , 6 . Using 14 C records 7 , 8 to control for climate-related influences on 10 Be deposition, we reconstruct centennial changes in solar activity. We find that during the Last Glacial Maximum, solar minima correlate with more negative δ 18 O values of ice and are accompanied by increased snow accumulation and sea-salt input over central Greenland. We suggest that solar minima could have induced changes in the stratosphere that favour the development of high-pressure blocking systems located to the south of Greenland, as has been found in observations and model simulations for recent climate 9 , 10 . We conclude that the mechanism behind solar forcing of regional climate change may have been similar under both modern and Last Glacial Maximum climate conditions. |
format |
Article in Journal/Newspaper |
author |
Adolphi, Florian Muscheler, Raimund Svensson, Ander Aldahan, Ala Possnert, Göran Beer, Jürg Sjolte, Jesper Björck, Svante Matthes, Katja Thiéblemont, Rémi |
spellingShingle |
Adolphi, Florian Muscheler, Raimund Svensson, Ander Aldahan, Ala Possnert, Göran Beer, Jürg Sjolte, Jesper Björck, Svante Matthes, Katja Thiéblemont, Rémi Persistent link between solar activity and Greenland climate during the Last Glacial Maximum |
author_facet |
Adolphi, Florian Muscheler, Raimund Svensson, Ander Aldahan, Ala Possnert, Göran Beer, Jürg Sjolte, Jesper Björck, Svante Matthes, Katja Thiéblemont, Rémi |
author_sort |
Adolphi, Florian |
title |
Persistent link between solar activity and Greenland climate during the Last Glacial Maximum |
title_short |
Persistent link between solar activity and Greenland climate during the Last Glacial Maximum |
title_full |
Persistent link between solar activity and Greenland climate during the Last Glacial Maximum |
title_fullStr |
Persistent link between solar activity and Greenland climate during the Last Glacial Maximum |
title_full_unstemmed |
Persistent link between solar activity and Greenland climate during the Last Glacial Maximum |
title_sort |
persistent link between solar activity and greenland climate during the last glacial maximum |
publisher |
Springer Nature |
publishDate |
2014 |
url |
https://doi.org/10.1038/ngeo2225 |
genre |
Greenland Greenland ice core Greenland Ice core Project GRIP ice core |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project GRIP ice core |
op_relation |
Nature Geoscience--Nat. Geosci.--journals:2182--1752-0894--1752-0908 eawag:7756 journal id: journals:2182 issn: 1752-0894 e-issn: 1752-0908 ut: 000341635600015 local: 16943 scopus: 2-s2.0-84906822109 doi:10.1038/ngeo2225 uri: pmid: |
op_doi |
https://doi.org/10.1038/ngeo2225 |
container_title |
Nature Geoscience |
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7 |
container_issue |
9 |
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662 |
op_container_end_page |
666 |
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1810446144928481280 |