Modern temperatures in central-north Greenland warmest in past millennium
The Greenland Ice Sheet has a central role in the global climate system owing to its size, radiative effects and freshwater storage, and as a potential tipping point(1). Weather stations show that the coastal regions are warming(2), but the imprint of global warming in the central part of the ice sh...
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2023
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Online Access: | https://curis.ku.dk/portal/da/publications/modern-temperatures-in-centralnorth-greenland-warmest-in-past-millennium(8eacd119-0c20-44c1-8508-10be098e03ad).html https://doi.org/10.1038/s41586-022-05517-z https://curis.ku.dk/ws/files/346047850/s41586_022_05517_z.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/8eacd119-0c20-44c1-8508-10be098e03ad 2024-06-09T07:46:15+00:00 Modern temperatures in central-north Greenland warmest in past millennium Hoerhold, M. Muench, T. Weissbach, S. Kipfstuhl, S. Freitag, J. Sasgen, I. Lohmann, G. Vinther, B. Laepple, T. 2023-01-18 application/pdf https://curis.ku.dk/portal/da/publications/modern-temperatures-in-centralnorth-greenland-warmest-in-past-millennium(8eacd119-0c20-44c1-8508-10be098e03ad).html https://doi.org/10.1038/s41586-022-05517-z https://curis.ku.dk/ws/files/346047850/s41586_022_05517_z.pdf eng eng info:eu-repo/semantics/openAccess Hoerhold , M , Muench , T , Weissbach , S , Kipfstuhl , S , Freitag , J , Sasgen , I , Lohmann , G , Vinther , B & Laepple , T 2023 , ' Modern temperatures in central-north Greenland warmest in past millennium ' , Nature , vol. 613 , no. 7944 , pp. 503-507 . https://doi.org/10.1038/s41586-022-05517-z ICE-SHEET CLIMATE VARIABILITY WATER ISOTOPES STABLE-ISOTOPES FIRN PRECIPITATION OXYGEN MELT RECONSTRUCTIONS DENSIFICATION article 2023 ftcopenhagenunip https://doi.org/10.1038/s41586-022-05517-z 2024-05-16T11:29:29Z The Greenland Ice Sheet has a central role in the global climate system owing to its size, radiative effects and freshwater storage, and as a potential tipping point(1). Weather stations show that the coastal regions are warming(2), but the imprint of global warming in the central part of the ice sheet is unclear, owing to missing long-term observations. Current ice-core-based temperature reconstructions(3-5) are ambiguous with respect to isolating global warming signatures from natural variability, because they are too noisy and do not include the most recent decades. By systematically redrilling ice cores, we created a high-quality reconstruction of central and north Greenland temperatures from ad 1000 until 2011. Here we show that the warming in the recent reconstructed decade exceeds the range of the pre-industrial temperature variability in the past millennium with virtual certainty (P < 0.001) and is on average 1.5 +/- 0.4 degrees Celsius (1 standard error) warmer than the twentieth century. Our findings suggest that these exceptional temperatures arise from the superposition of natural variability with a long-term warming trend, apparent since ad 1800. The disproportionate warming is accompanied by enhanced Greenland meltwater run-off, implying that anthropogenic influence has also arrived in central and north Greenland, which might further accelerate the overall Greenland mass loss. Article in Journal/Newspaper Greenland ice core Ice Sheet North Greenland University of Copenhagen: Research Greenland Nature 613 7944 503 507 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
ICE-SHEET CLIMATE VARIABILITY WATER ISOTOPES STABLE-ISOTOPES FIRN PRECIPITATION OXYGEN MELT RECONSTRUCTIONS DENSIFICATION |
spellingShingle |
ICE-SHEET CLIMATE VARIABILITY WATER ISOTOPES STABLE-ISOTOPES FIRN PRECIPITATION OXYGEN MELT RECONSTRUCTIONS DENSIFICATION Hoerhold, M. Muench, T. Weissbach, S. Kipfstuhl, S. Freitag, J. Sasgen, I. Lohmann, G. Vinther, B. Laepple, T. Modern temperatures in central-north Greenland warmest in past millennium |
topic_facet |
ICE-SHEET CLIMATE VARIABILITY WATER ISOTOPES STABLE-ISOTOPES FIRN PRECIPITATION OXYGEN MELT RECONSTRUCTIONS DENSIFICATION |
description |
The Greenland Ice Sheet has a central role in the global climate system owing to its size, radiative effects and freshwater storage, and as a potential tipping point(1). Weather stations show that the coastal regions are warming(2), but the imprint of global warming in the central part of the ice sheet is unclear, owing to missing long-term observations. Current ice-core-based temperature reconstructions(3-5) are ambiguous with respect to isolating global warming signatures from natural variability, because they are too noisy and do not include the most recent decades. By systematically redrilling ice cores, we created a high-quality reconstruction of central and north Greenland temperatures from ad 1000 until 2011. Here we show that the warming in the recent reconstructed decade exceeds the range of the pre-industrial temperature variability in the past millennium with virtual certainty (P < 0.001) and is on average 1.5 +/- 0.4 degrees Celsius (1 standard error) warmer than the twentieth century. Our findings suggest that these exceptional temperatures arise from the superposition of natural variability with a long-term warming trend, apparent since ad 1800. The disproportionate warming is accompanied by enhanced Greenland meltwater run-off, implying that anthropogenic influence has also arrived in central and north Greenland, which might further accelerate the overall Greenland mass loss. |
format |
Article in Journal/Newspaper |
author |
Hoerhold, M. Muench, T. Weissbach, S. Kipfstuhl, S. Freitag, J. Sasgen, I. Lohmann, G. Vinther, B. Laepple, T. |
author_facet |
Hoerhold, M. Muench, T. Weissbach, S. Kipfstuhl, S. Freitag, J. Sasgen, I. Lohmann, G. Vinther, B. Laepple, T. |
author_sort |
Hoerhold, M. |
title |
Modern temperatures in central-north Greenland warmest in past millennium |
title_short |
Modern temperatures in central-north Greenland warmest in past millennium |
title_full |
Modern temperatures in central-north Greenland warmest in past millennium |
title_fullStr |
Modern temperatures in central-north Greenland warmest in past millennium |
title_full_unstemmed |
Modern temperatures in central-north Greenland warmest in past millennium |
title_sort |
modern temperatures in central-north greenland warmest in past millennium |
publishDate |
2023 |
url |
https://curis.ku.dk/portal/da/publications/modern-temperatures-in-centralnorth-greenland-warmest-in-past-millennium(8eacd119-0c20-44c1-8508-10be098e03ad).html https://doi.org/10.1038/s41586-022-05517-z https://curis.ku.dk/ws/files/346047850/s41586_022_05517_z.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland ice core Ice Sheet North Greenland |
genre_facet |
Greenland ice core Ice Sheet North Greenland |
op_source |
Hoerhold , M , Muench , T , Weissbach , S , Kipfstuhl , S , Freitag , J , Sasgen , I , Lohmann , G , Vinther , B & Laepple , T 2023 , ' Modern temperatures in central-north Greenland warmest in past millennium ' , Nature , vol. 613 , no. 7944 , pp. 503-507 . https://doi.org/10.1038/s41586-022-05517-z |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41586-022-05517-z |
container_title |
Nature |
container_volume |
613 |
container_issue |
7944 |
container_start_page |
503 |
op_container_end_page |
507 |
_version_ |
1801376030341988352 |