Leaf wax hydrogen isotope data, and modern precipitation isotope data, Lake E5, Alaska, 2014-2018
The Late-Quaternary climate of Beringia remains unresolved despite the region’s role in modulating glacial-interglacial climate and as the conduit for human dispersal into the Americas. We investigate Beringian temperature change using an ~32,000-year record of leaf wax hydrogen isotope ratios (δDwa...
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ftdatacite:10.18739/a2dz03215 2023-05-15T14:46:40+02:00 Leaf wax hydrogen isotope data, and modern precipitation isotope data, Lake E5, Alaska, 2014-2018 Daniels, William Huang, Yongsong Russell, James Morrill, Carrie Longo, William Giblin, Anne Welker, Jeffrey Wen, Xinyu Hu, Aixue Holland-Stergar, Patrick 2019 text/xml https://dx.doi.org/10.18739/a2dz03215 https://arcticdata.io/catalog/#view/doi:10.18739/A2DZ03215 en eng Arctic Data Center Arctic Paleoclimate Hydrogen Isotopes dataset Dataset 2019 ftdatacite https://doi.org/10.18739/a2dz03215 2021-11-05T12:55:41Z The Late-Quaternary climate of Beringia remains unresolved despite the region’s role in modulating glacial-interglacial climate and as the conduit for human dispersal into the Americas. We investigate Beringian temperature change using an ~32,000-year record of leaf wax hydrogen isotope ratios (δDwax) archived in lake sediments in Arctic Alaska. Temperatures were 2.9 °C colder during the Last Glacial Maximum (LGM; 21-25 thousand years before present, ka) than the pre-industrial era (PI; 2-0.1 ka). LGM temperatures were substantially warmer than in other parts of the Arctic, reflecting the greater continentality and altered atmospheric circulation which together contributed to weaker, rather than amplified, glacial cooling in the region. The transition to Holocene warmth was punctuated by abrupt events that are largely synchronous with events seen in Greenland ice cores but which also arise from local processes. Warming of 1.7 °C over the anthropogenic era has reversed a 5.5 °C decline through the Holocene, such that that recent warming in Arctic Alaska has not surpassed peak Holocene warmth. Our reconstruction, together with climate modeling experiments, indicates that Eastern Beringia responds more strongly to global climate forcings under modern-day, open-Bering Strait conditions. Dataset Arctic Bering Strait Greenland Greenland ice cores Alaska Beringia DataCite Metadata Store (German National Library of Science and Technology) Arctic Bering Strait Greenland |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Arctic Paleoclimate Hydrogen Isotopes |
spellingShingle |
Arctic Paleoclimate Hydrogen Isotopes Daniels, William Huang, Yongsong Russell, James Morrill, Carrie Longo, William Giblin, Anne Welker, Jeffrey Wen, Xinyu Hu, Aixue Holland-Stergar, Patrick Leaf wax hydrogen isotope data, and modern precipitation isotope data, Lake E5, Alaska, 2014-2018 |
topic_facet |
Arctic Paleoclimate Hydrogen Isotopes |
description |
The Late-Quaternary climate of Beringia remains unresolved despite the region’s role in modulating glacial-interglacial climate and as the conduit for human dispersal into the Americas. We investigate Beringian temperature change using an ~32,000-year record of leaf wax hydrogen isotope ratios (δDwax) archived in lake sediments in Arctic Alaska. Temperatures were 2.9 °C colder during the Last Glacial Maximum (LGM; 21-25 thousand years before present, ka) than the pre-industrial era (PI; 2-0.1 ka). LGM temperatures were substantially warmer than in other parts of the Arctic, reflecting the greater continentality and altered atmospheric circulation which together contributed to weaker, rather than amplified, glacial cooling in the region. The transition to Holocene warmth was punctuated by abrupt events that are largely synchronous with events seen in Greenland ice cores but which also arise from local processes. Warming of 1.7 °C over the anthropogenic era has reversed a 5.5 °C decline through the Holocene, such that that recent warming in Arctic Alaska has not surpassed peak Holocene warmth. Our reconstruction, together with climate modeling experiments, indicates that Eastern Beringia responds more strongly to global climate forcings under modern-day, open-Bering Strait conditions. |
format |
Dataset |
author |
Daniels, William Huang, Yongsong Russell, James Morrill, Carrie Longo, William Giblin, Anne Welker, Jeffrey Wen, Xinyu Hu, Aixue Holland-Stergar, Patrick |
author_facet |
Daniels, William Huang, Yongsong Russell, James Morrill, Carrie Longo, William Giblin, Anne Welker, Jeffrey Wen, Xinyu Hu, Aixue Holland-Stergar, Patrick |
author_sort |
Daniels, William |
title |
Leaf wax hydrogen isotope data, and modern precipitation isotope data, Lake E5, Alaska, 2014-2018 |
title_short |
Leaf wax hydrogen isotope data, and modern precipitation isotope data, Lake E5, Alaska, 2014-2018 |
title_full |
Leaf wax hydrogen isotope data, and modern precipitation isotope data, Lake E5, Alaska, 2014-2018 |
title_fullStr |
Leaf wax hydrogen isotope data, and modern precipitation isotope data, Lake E5, Alaska, 2014-2018 |
title_full_unstemmed |
Leaf wax hydrogen isotope data, and modern precipitation isotope data, Lake E5, Alaska, 2014-2018 |
title_sort |
leaf wax hydrogen isotope data, and modern precipitation isotope data, lake e5, alaska, 2014-2018 |
publisher |
Arctic Data Center |
publishDate |
2019 |
url |
https://dx.doi.org/10.18739/a2dz03215 https://arcticdata.io/catalog/#view/doi:10.18739/A2DZ03215 |
geographic |
Arctic Bering Strait Greenland |
geographic_facet |
Arctic Bering Strait Greenland |
genre |
Arctic Bering Strait Greenland Greenland ice cores Alaska Beringia |
genre_facet |
Arctic Bering Strait Greenland Greenland ice cores Alaska Beringia |
op_doi |
https://doi.org/10.18739/a2dz03215 |
_version_ |
1766317870599372800 |