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 climates1. Direct observational records of solar activity, such as sunspot numbers, exist for only the past few hundred years, so solar variability for earlier p...
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ftoceanrep:oai:oceanrep.geomar.de:25479 2023-05-15T16:25:36+02:00 Persistent link between solar activity and Greenland climate during the Last Glacial Maximum Adolphi, Florian Muscheler, Raimund Svensson, Anders Aldahan, Ala Possnert, Göran Beer, Jürg Sjolte, Jesper Björck, Svante Matthes, Katja Thieblemont, Remi 2014-09-30 text https://oceanrep.geomar.de/id/eprint/25479/ https://oceanrep.geomar.de/id/eprint/25479/1/ngeo2225.pdf https://doi.org/10.1038/ngeo2225 en eng Nature Publishing Group https://oceanrep.geomar.de/id/eprint/25479/1/ngeo2225.pdf Adolphi, F., Muscheler, R., Svensson, A., Aldahan, A., Possnert, G., Beer, J., Sjolte, J., Björck, S., Matthes, K. and Thieblemont, R. (2014) Persistent link between solar activity and Greenland climate during the Last Glacial Maximum. Nature Geoscience, 7 (9). pp. 662-666. DOI 10.1038/ngeo2225 <https://doi.org/10.1038/ngeo2225>. doi:10.1038/ngeo2225 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2014 ftoceanrep https://doi.org/10.1038/ngeo2225 2023-04-07T15:14:04Z Changes in solar activity have previously been proposed to cause decadal- to millennial-scale fluctuations in both the modern and Holocene climates1. 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 10Be and 14C from ice cores and tree rings2, 3. Here we present a high-resolution 10Be 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 data4, 5, 6. Using 14C records7, 8 to control for climate-related influences on 10Be deposition, we reconstruct centennial changes in solar activity. We find that during the Last Glacial Maximum, solar minima correlate with more negative δ18O 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 climate9, 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 OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Greenland Nature Geoscience 7 9 662 666 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Changes in solar activity have previously been proposed to cause decadal- to millennial-scale fluctuations in both the modern and Holocene climates1. 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 10Be and 14C from ice cores and tree rings2, 3. Here we present a high-resolution 10Be 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 data4, 5, 6. Using 14C records7, 8 to control for climate-related influences on 10Be deposition, we reconstruct centennial changes in solar activity. We find that during the Last Glacial Maximum, solar minima correlate with more negative δ18O 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 climate9, 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, Anders Aldahan, Ala Possnert, Göran Beer, Jürg Sjolte, Jesper Björck, Svante Matthes, Katja Thieblemont, Remi |
spellingShingle |
Adolphi, Florian Muscheler, Raimund Svensson, Anders Aldahan, Ala Possnert, Göran Beer, Jürg Sjolte, Jesper Björck, Svante Matthes, Katja Thieblemont, Remi Persistent link between solar activity and Greenland climate during the Last Glacial Maximum |
author_facet |
Adolphi, Florian Muscheler, Raimund Svensson, Anders Aldahan, Ala Possnert, Göran Beer, Jürg Sjolte, Jesper Björck, Svante Matthes, Katja Thieblemont, Remi |
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 |
Nature Publishing Group |
publishDate |
2014 |
url |
https://oceanrep.geomar.de/id/eprint/25479/ https://oceanrep.geomar.de/id/eprint/25479/1/ngeo2225.pdf https://doi.org/10.1038/ngeo2225 |
geographic |
Greenland |
geographic_facet |
Greenland |
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 |
https://oceanrep.geomar.de/id/eprint/25479/1/ngeo2225.pdf Adolphi, F., Muscheler, R., Svensson, A., Aldahan, A., Possnert, G., Beer, J., Sjolte, J., Björck, S., Matthes, K. and Thieblemont, R. (2014) Persistent link between solar activity and Greenland climate during the Last Glacial Maximum. Nature Geoscience, 7 (9). pp. 662-666. DOI 10.1038/ngeo2225 <https://doi.org/10.1038/ngeo2225>. doi:10.1038/ngeo2225 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/ngeo2225 |
container_title |
Nature Geoscience |
container_volume |
7 |
container_issue |
9 |
container_start_page |
662 |
op_container_end_page |
666 |
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1766014401134985216 |