Tropical ice core records: evidence for asynchronous glaciation on Milankovitch timescales
Abstract Over the last 28 years ice core records have been systematically recovered from ten high‐elevation ice fields, nine of which are located in the low latitudes. Each core has provided new information about the regional climate and environmental change, and together their records challenge exi...
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crwiley:10.1002/jqs.972 2024-09-30T14:36:30+00:00 Tropical ice core records: evidence for asynchronous glaciation on Milankovitch timescales Thompson, Lonnie G. Davis, Mary E. Mosley‐Thompson, Ellen Lin, Ping‐Nan Henderson, Keith A. Mashiotta, Tracy A. 2005 http://dx.doi.org/10.1002/jqs.972 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.972 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.972 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 20, issue 7-8, page 723-733 ISSN 0267-8179 1099-1417 journal-article 2005 crwiley https://doi.org/10.1002/jqs.972 2024-09-19T04:17:55Z Abstract Over the last 28 years ice core records have been systematically recovered from ten high‐elevation ice fields, nine of which are located in the low latitudes. Each core has provided new information about the regional climate and environmental change, and together their records challenge existing paradigms about the Earth's climate system. When viewed collectively, these ice core histories provide compelling evidence that the growth (glaciation) and decay (deglaciation) of large ice fields in the lower latitudes are often asynchronous, both between the hemispheres and with high latitude glaciation that occurs on Milankovitch timescales. Although stable isotopic records suggest that global‐scale cooling occurred during the Last Glacial Stage (LGS), we contend that precipitation is the primary driver of glaciation in the low latitudes. This is consistent with the time‐transgressive nature of precession‐driven changes in insolation (and hence precipitation) such that glaciers advance/retreat in the tropics north of the equator while glaciers retreat/advance in the tropics south of the equator. Thus, the coeval inter‐hemispheric retreat of glaciers in the 20th century and the beginning of the 21st century is atypical. Copyright © 2005 John Wiley & Sons, Ltd. Article in Journal/Newspaper ice core Wiley Online Library Journal of Quaternary Science 20 7-8 723 733 |
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Wiley Online Library |
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English |
description |
Abstract Over the last 28 years ice core records have been systematically recovered from ten high‐elevation ice fields, nine of which are located in the low latitudes. Each core has provided new information about the regional climate and environmental change, and together their records challenge existing paradigms about the Earth's climate system. When viewed collectively, these ice core histories provide compelling evidence that the growth (glaciation) and decay (deglaciation) of large ice fields in the lower latitudes are often asynchronous, both between the hemispheres and with high latitude glaciation that occurs on Milankovitch timescales. Although stable isotopic records suggest that global‐scale cooling occurred during the Last Glacial Stage (LGS), we contend that precipitation is the primary driver of glaciation in the low latitudes. This is consistent with the time‐transgressive nature of precession‐driven changes in insolation (and hence precipitation) such that glaciers advance/retreat in the tropics north of the equator while glaciers retreat/advance in the tropics south of the equator. Thus, the coeval inter‐hemispheric retreat of glaciers in the 20th century and the beginning of the 21st century is atypical. Copyright © 2005 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Thompson, Lonnie G. Davis, Mary E. Mosley‐Thompson, Ellen Lin, Ping‐Nan Henderson, Keith A. Mashiotta, Tracy A. |
spellingShingle |
Thompson, Lonnie G. Davis, Mary E. Mosley‐Thompson, Ellen Lin, Ping‐Nan Henderson, Keith A. Mashiotta, Tracy A. Tropical ice core records: evidence for asynchronous glaciation on Milankovitch timescales |
author_facet |
Thompson, Lonnie G. Davis, Mary E. Mosley‐Thompson, Ellen Lin, Ping‐Nan Henderson, Keith A. Mashiotta, Tracy A. |
author_sort |
Thompson, Lonnie G. |
title |
Tropical ice core records: evidence for asynchronous glaciation on Milankovitch timescales |
title_short |
Tropical ice core records: evidence for asynchronous glaciation on Milankovitch timescales |
title_full |
Tropical ice core records: evidence for asynchronous glaciation on Milankovitch timescales |
title_fullStr |
Tropical ice core records: evidence for asynchronous glaciation on Milankovitch timescales |
title_full_unstemmed |
Tropical ice core records: evidence for asynchronous glaciation on Milankovitch timescales |
title_sort |
tropical ice core records: evidence for asynchronous glaciation on milankovitch timescales |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1002/jqs.972 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.972 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.972 |
genre |
ice core |
genre_facet |
ice core |
op_source |
Journal of Quaternary Science volume 20, issue 7-8, page 723-733 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.972 |
container_title |
Journal of Quaternary Science |
container_volume |
20 |
container_issue |
7-8 |
container_start_page |
723 |
op_container_end_page |
733 |
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1811639537679466496 |