Extra-long interglacial in Northern Hemisphere during MISs 15-13 arising from limited extent of Arctic ice sheets in glacial MIS 14
Knowledge of the behavior of Northern Hemisphere (NH) ice sheets over the past million years is crucial for understanding the role of orbitally driven insolation changes on glacial/interglacial cycles. Here, based on the demonstrable link between changes in Chinese loess grain-size and NH ice-sheet...
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ftpubmed:oai:pubmedcentral.nih.gov:4498323 2023-05-15T14:00:13+02:00 Extra-long interglacial in Northern Hemisphere during MISs 15-13 arising from limited extent of Arctic ice sheets in glacial MIS 14 Hao, Qingzhen Wang, Luo Oldfield, Frank Guo, Zhengtang 2015-07-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498323/ http://www.ncbi.nlm.nih.gov/pubmed/26159304 https://doi.org/10.1038/srep12103 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498323/ http://www.ncbi.nlm.nih.gov/pubmed/26159304 http://dx.doi.org/10.1038/srep12103 Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2015 ftpubmed https://doi.org/10.1038/srep12103 2015-07-19T01:03:39Z Knowledge of the behavior of Northern Hemisphere (NH) ice sheets over the past million years is crucial for understanding the role of orbitally driven insolation changes on glacial/interglacial cycles. Here, based on the demonstrable link between changes in Chinese loess grain-size and NH ice-sheet extent, we use loess grain-size records to confirm that northern ice-sheets were restricted during marine oxygen isotope stage (MIS) 14. Thus, an unusually long NH interglacial climate of over 100 kyr persisted during MISs 15−13, much longer than expected from marine oxygen isotope records. Taking a global view of the paleoclimate records, MIS 14 inception seems to be a response to changes in Antarctic ice-sheets rather than to NH cooling. Orbital configuration in the two Polar regions shows that the onset of MIS 14 was forced by austral insolation changes, rather than by boreal summer insolation, as Milankovitch theory proposes. Our analysis of MIS 14 raises the possibility that southern insolation forcing may have played an important role in the inception of several other glacials. We suggest that the extra-long NH interglacial climate during MISs 15−13 provided favorable conditions for the second major dispersal episode of African hominins into Eurasia. Text Antarc* Antarctic Arctic Ice Sheet PubMed Central (PMC) Antarctic Arctic Austral Scientific Reports 5 1 |
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Article Hao, Qingzhen Wang, Luo Oldfield, Frank Guo, Zhengtang Extra-long interglacial in Northern Hemisphere during MISs 15-13 arising from limited extent of Arctic ice sheets in glacial MIS 14 |
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Article |
description |
Knowledge of the behavior of Northern Hemisphere (NH) ice sheets over the past million years is crucial for understanding the role of orbitally driven insolation changes on glacial/interglacial cycles. Here, based on the demonstrable link between changes in Chinese loess grain-size and NH ice-sheet extent, we use loess grain-size records to confirm that northern ice-sheets were restricted during marine oxygen isotope stage (MIS) 14. Thus, an unusually long NH interglacial climate of over 100 kyr persisted during MISs 15−13, much longer than expected from marine oxygen isotope records. Taking a global view of the paleoclimate records, MIS 14 inception seems to be a response to changes in Antarctic ice-sheets rather than to NH cooling. Orbital configuration in the two Polar regions shows that the onset of MIS 14 was forced by austral insolation changes, rather than by boreal summer insolation, as Milankovitch theory proposes. Our analysis of MIS 14 raises the possibility that southern insolation forcing may have played an important role in the inception of several other glacials. We suggest that the extra-long NH interglacial climate during MISs 15−13 provided favorable conditions for the second major dispersal episode of African hominins into Eurasia. |
format |
Text |
author |
Hao, Qingzhen Wang, Luo Oldfield, Frank Guo, Zhengtang |
author_facet |
Hao, Qingzhen Wang, Luo Oldfield, Frank Guo, Zhengtang |
author_sort |
Hao, Qingzhen |
title |
Extra-long interglacial in Northern Hemisphere during MISs 15-13 arising from limited extent of Arctic ice sheets in glacial MIS 14 |
title_short |
Extra-long interglacial in Northern Hemisphere during MISs 15-13 arising from limited extent of Arctic ice sheets in glacial MIS 14 |
title_full |
Extra-long interglacial in Northern Hemisphere during MISs 15-13 arising from limited extent of Arctic ice sheets in glacial MIS 14 |
title_fullStr |
Extra-long interglacial in Northern Hemisphere during MISs 15-13 arising from limited extent of Arctic ice sheets in glacial MIS 14 |
title_full_unstemmed |
Extra-long interglacial in Northern Hemisphere during MISs 15-13 arising from limited extent of Arctic ice sheets in glacial MIS 14 |
title_sort |
extra-long interglacial in northern hemisphere during miss 15-13 arising from limited extent of arctic ice sheets in glacial mis 14 |
publisher |
Nature Publishing Group |
publishDate |
2015 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498323/ http://www.ncbi.nlm.nih.gov/pubmed/26159304 https://doi.org/10.1038/srep12103 |
geographic |
Antarctic Arctic Austral |
geographic_facet |
Antarctic Arctic Austral |
genre |
Antarc* Antarctic Arctic Ice Sheet |
genre_facet |
Antarc* Antarctic Arctic Ice Sheet |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498323/ http://www.ncbi.nlm.nih.gov/pubmed/26159304 http://dx.doi.org/10.1038/srep12103 |
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Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
op_doi |
https://doi.org/10.1038/srep12103 |
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Scientific Reports |
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