Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis
© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Nye, H., & Condron, A. Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis. Climate of the Past, 17(3), (2...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/27633 2023-05-15T16:28:29+02:00 Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis Nye, Henry Condron, Alan 2021-06-30 https://hdl.handle.net/1912/27633 unknown European Geosciences Union https://doi.org/10.5194/cp-17-1409-2021 Nye, H., & Condron, A. (2021). Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis. Climate of the Past, 17(3), 1409–1421. https://hdl.handle.net/1912/27633 doi:10.5194/cp-17-1409-2021 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ CC-BY Nye, H., & Condron, A. (2021). Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis. Climate of the Past, 17(3), 1409–1421. doi:10.5194/cp-17-1409-2021 Article 2021 ftwhoas https://doi.org/10.5194/cp-17-1409-2021 2022-05-28T23:04:19Z © The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Nye, H., & Condron, A. Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis. Climate of the Past, 17(3), (2021): 1409–1421, https://doi.org/10.5194/cp-17-1409-2021. During the last glacial period (ca. 120–11 kyr BP), dramatic temperature swings, known as Dansgaard–Oeschger (D–O) events, are clearly manifest in high-resolution oxygen isotope records from the Greenland Ice Sheet. Although variability in the Atlantic Meridional Overturning Circulation (AMOC) is often invoked, a unified explanation for what caused these “sawtooth-shaped” climate patterns has yet to be accepted. Of particular interest is the most recent D–O-shaped climate pattern that occurred from ∼ 14 600 to 11 500 years ago – the Bølling–Allerød (BA) warm interstadial and the subsequent Younger Dryas (YD) cold stadial. Unlike earlier D–O stadials, the YD is frequently considered a unique event, potentially resulting from a rerouting and/or flood of glacial meltwater into the North Atlantic or a meteorite impact. Yet, these mechanisms are less frequently considered as the cause of the earlier stadials. Using a robust multivariate outlier detection scheme – a novel approach for traditional paleoclimate research – we show that the pattern of climate change during the BA/YD is not statistically different from the other D–O events in the Greenland record and that it should not necessarily be considered unique when investigating the drivers of abrupt climate change. In so doing, our results present a novel statistical framework for paleoclimatic data analysis. This research has been supported by the National Science Foundation (grant no. NSF REU OCE-1852460). Article in Journal/Newspaper Greenland Ice Sheet North Atlantic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Greenland Reu ENVELOPE(65.600,65.600,-71.142,-71.142) Climate of the Past 17 3 1409 1421 |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Nye, H., & Condron, A. Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis. Climate of the Past, 17(3), (2021): 1409–1421, https://doi.org/10.5194/cp-17-1409-2021. During the last glacial period (ca. 120–11 kyr BP), dramatic temperature swings, known as Dansgaard–Oeschger (D–O) events, are clearly manifest in high-resolution oxygen isotope records from the Greenland Ice Sheet. Although variability in the Atlantic Meridional Overturning Circulation (AMOC) is often invoked, a unified explanation for what caused these “sawtooth-shaped” climate patterns has yet to be accepted. Of particular interest is the most recent D–O-shaped climate pattern that occurred from ∼ 14 600 to 11 500 years ago – the Bølling–Allerød (BA) warm interstadial and the subsequent Younger Dryas (YD) cold stadial. Unlike earlier D–O stadials, the YD is frequently considered a unique event, potentially resulting from a rerouting and/or flood of glacial meltwater into the North Atlantic or a meteorite impact. Yet, these mechanisms are less frequently considered as the cause of the earlier stadials. Using a robust multivariate outlier detection scheme – a novel approach for traditional paleoclimate research – we show that the pattern of climate change during the BA/YD is not statistically different from the other D–O events in the Greenland record and that it should not necessarily be considered unique when investigating the drivers of abrupt climate change. In so doing, our results present a novel statistical framework for paleoclimatic data analysis. This research has been supported by the National Science Foundation (grant no. NSF REU OCE-1852460). |
format |
Article in Journal/Newspaper |
author |
Nye, Henry Condron, Alan |
spellingShingle |
Nye, Henry Condron, Alan Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis |
author_facet |
Nye, Henry Condron, Alan |
author_sort |
Nye, Henry |
title |
Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis |
title_short |
Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis |
title_full |
Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis |
title_fullStr |
Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis |
title_full_unstemmed |
Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis |
title_sort |
assessing the statistical uniqueness of the younger dryas: a robust multivariate analysis |
publisher |
European Geosciences Union |
publishDate |
2021 |
url |
https://hdl.handle.net/1912/27633 |
long_lat |
ENVELOPE(65.600,65.600,-71.142,-71.142) |
geographic |
Greenland Reu |
geographic_facet |
Greenland Reu |
genre |
Greenland Ice Sheet North Atlantic |
genre_facet |
Greenland Ice Sheet North Atlantic |
op_source |
Nye, H., & Condron, A. (2021). Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis. Climate of the Past, 17(3), 1409–1421. doi:10.5194/cp-17-1409-2021 |
op_relation |
https://doi.org/10.5194/cp-17-1409-2021 Nye, H., & Condron, A. (2021). Assessing the statistical uniqueness of the Younger Dryas: a robust multivariate analysis. Climate of the Past, 17(3), 1409–1421. https://hdl.handle.net/1912/27633 doi:10.5194/cp-17-1409-2021 |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-17-1409-2021 |
container_title |
Climate of the Past |
container_volume |
17 |
container_issue |
3 |
container_start_page |
1409 |
op_container_end_page |
1421 |
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1766018139226636288 |