700,000 years of tropical Andean glaciation
Our understanding of the climatic teleconnections that drove ice-age cycles has been limited by a paucity of well-dated tropical records of glaciation that span several glacial–interglacial intervals. Glacial deposits offer discrete snapshots of glacier extent but cannot provide the continuous recor...
Published in: | Nature |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2022
|
Subjects: | |
Online Access: | https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638_1/component/file_5012710/5012638.pdf |
id |
ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5012638 |
---|---|
record_format |
openpolar |
spelling |
ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5012638 2023-05-15T16:21:30+02:00 700,000 years of tropical Andean glaciation Rodbell, D. Hatfield, R. Abbott, M. Chen, C. Woods, A. Stoner, J. McGee, D. Tapia, P. Bush, M. Valero-Garcés, B. Lehmann, S. Mark, S. Weidhaas, N. Hillman, A. Larsen, D. Delgado, G. Katz, S. Solada, K. Morey, A. Finkenbinder, M. Valencia, B. Rozas-Davila, A. Wattrus, N. Colman, S. Bustamante, M. Kück, J. Pierdominici, S. 2022 application/pdf https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638_1/component/file_5012710/5012638.pdf unknown info:eu-repo/semantics/altIdentifier/doi/10.1038/s41586-022-04873-0 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638_1/component/file_5012710/5012638.pdf info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ CC-BY Nature info:eu-repo/semantics/article 2022 ftgfzpotsdam https://doi.org/10.1038/s41586-022-04873-0 2023-02-06T00:33:48Z Our understanding of the climatic teleconnections that drove ice-age cycles has been limited by a paucity of well-dated tropical records of glaciation that span several glacial–interglacial intervals. Glacial deposits offer discrete snapshots of glacier extent but cannot provide the continuous records required for detailed interhemispheric comparisons. By contrast, lakes located within glaciated catchments can provide continuous archives of upstream glacial activity, but few such records extend beyond the last glacial cycle. Here a piston core from Lake Junín in the uppermost Amazon basin provides the first, to our knowledge, continuous, independently dated archive of tropical glaciation spanning 700,000 years. We find that tropical glaciers tracked changes in global ice volume and followed a clear approximately 100,000-year periodicity. An enhancement in the extent of tropical Andean glaciers relative to global ice volume occurred between 200,000 and 400,000 years ago, during sustained intervals of regionally elevated hydrologic balance that modified the regular approximately 23,000-year pacing of monsoon-driven precipitation. Millennial-scale variations in the extent of tropical Andean glaciers during the last glacial cycle were driven by variations in regional monsoon strength that were linked to temperature perturbations in Greenland ice cores1; these interhemispheric connections may have existed during previous glacial cycles. Article in Journal/Newspaper glacier Greenland GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Greenland Nature 607 7918 301 306 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
unknown |
description |
Our understanding of the climatic teleconnections that drove ice-age cycles has been limited by a paucity of well-dated tropical records of glaciation that span several glacial–interglacial intervals. Glacial deposits offer discrete snapshots of glacier extent but cannot provide the continuous records required for detailed interhemispheric comparisons. By contrast, lakes located within glaciated catchments can provide continuous archives of upstream glacial activity, but few such records extend beyond the last glacial cycle. Here a piston core from Lake Junín in the uppermost Amazon basin provides the first, to our knowledge, continuous, independently dated archive of tropical glaciation spanning 700,000 years. We find that tropical glaciers tracked changes in global ice volume and followed a clear approximately 100,000-year periodicity. An enhancement in the extent of tropical Andean glaciers relative to global ice volume occurred between 200,000 and 400,000 years ago, during sustained intervals of regionally elevated hydrologic balance that modified the regular approximately 23,000-year pacing of monsoon-driven precipitation. Millennial-scale variations in the extent of tropical Andean glaciers during the last glacial cycle were driven by variations in regional monsoon strength that were linked to temperature perturbations in Greenland ice cores1; these interhemispheric connections may have existed during previous glacial cycles. |
format |
Article in Journal/Newspaper |
author |
Rodbell, D. Hatfield, R. Abbott, M. Chen, C. Woods, A. Stoner, J. McGee, D. Tapia, P. Bush, M. Valero-Garcés, B. Lehmann, S. Mark, S. Weidhaas, N. Hillman, A. Larsen, D. Delgado, G. Katz, S. Solada, K. Morey, A. Finkenbinder, M. Valencia, B. Rozas-Davila, A. Wattrus, N. Colman, S. Bustamante, M. Kück, J. Pierdominici, S. |
spellingShingle |
Rodbell, D. Hatfield, R. Abbott, M. Chen, C. Woods, A. Stoner, J. McGee, D. Tapia, P. Bush, M. Valero-Garcés, B. Lehmann, S. Mark, S. Weidhaas, N. Hillman, A. Larsen, D. Delgado, G. Katz, S. Solada, K. Morey, A. Finkenbinder, M. Valencia, B. Rozas-Davila, A. Wattrus, N. Colman, S. Bustamante, M. Kück, J. Pierdominici, S. 700,000 years of tropical Andean glaciation |
author_facet |
Rodbell, D. Hatfield, R. Abbott, M. Chen, C. Woods, A. Stoner, J. McGee, D. Tapia, P. Bush, M. Valero-Garcés, B. Lehmann, S. Mark, S. Weidhaas, N. Hillman, A. Larsen, D. Delgado, G. Katz, S. Solada, K. Morey, A. Finkenbinder, M. Valencia, B. Rozas-Davila, A. Wattrus, N. Colman, S. Bustamante, M. Kück, J. Pierdominici, S. |
author_sort |
Rodbell, D. |
title |
700,000 years of tropical Andean glaciation |
title_short |
700,000 years of tropical Andean glaciation |
title_full |
700,000 years of tropical Andean glaciation |
title_fullStr |
700,000 years of tropical Andean glaciation |
title_full_unstemmed |
700,000 years of tropical Andean glaciation |
title_sort |
700,000 years of tropical andean glaciation |
publishDate |
2022 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638_1/component/file_5012710/5012638.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland |
genre_facet |
glacier Greenland |
op_source |
Nature |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41586-022-04873-0 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5012638_1/component/file_5012710/5012638.pdf |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41586-022-04873-0 |
container_title |
Nature |
container_volume |
607 |
container_issue |
7918 |
container_start_page |
301 |
op_container_end_page |
306 |
_version_ |
1766009504231587840 |