Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles
Here we developed a composite pollen-based record of altitudinal vegetation changes from Lake Fúquene (5° N) in Colombia at 2540 m elevation. We quantitatively calibrated Arboreal Pollen percentages (AP%) into mean annual temperature (MAT) changes with an unprecedented ~60-year resolution over the p...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Copernicus Publications on behalf of the European Geosciences Union
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/2381/19178 http://www.clim-past.net/7/299/2011/cp-7-299-2011.html https://doi.org/10.5194/cp-7-299-2011 |
id |
ftleicester:oai:lra.le.ac.uk:2381/19178 |
---|---|
record_format |
openpolar |
spelling |
ftleicester:oai:lra.le.ac.uk:2381/19178 2023-05-15T17:33:22+02:00 Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles Groot, M.H.M. Bogotá, R.G. Lourens, L.J. Hooghiemstra, H. Vriend, M. Berrio, Juan C. Tuenter, E. Van Der Plicht, J. Van Geel, B. Ziegler, M. Weber, S.L. Betancourt, A. Contreras, L. Gaviria, S. Giraldo, C. González, N. Jansen, J.H.F. Konert, M. Ortega, D. Rangel, O. Sarmiento, G. Vandenberghe, J. Van Der Hammen, T. Van Der Linden, M. Westerhoff, W. 2012-10-24T09:06:25Z http://hdl.handle.net/2381/19178 http://www.clim-past.net/7/299/2011/cp-7-299-2011.html https://doi.org/10.5194/cp-7-299-2011 unknown Copernicus Publications on behalf of the European Geosciences Union Climate of the Past, 2011, 7 (1), pp. 299-316 http://hdl.handle.net/2381/19178 http://www.clim-past.net/7/299/2011/cp-7-299-2011.html doi:10.5194/cp-7-299-2011 1814-9332 Copyright © the authors, 2011. This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Journal Article 2012 ftleicester https://doi.org/10.5194/cp-7-299-2011 2019-03-22T20:16:52Z Here we developed a composite pollen-based record of altitudinal vegetation changes from Lake Fúquene (5° N) in Colombia at 2540 m elevation. We quantitatively calibrated Arboreal Pollen percentages (AP%) into mean annual temperature (MAT) changes with an unprecedented ~60-year resolution over the past 284 000 years. An age model for the AP% record was constructed using frequency analysis in the depth domain and tuning of the distinct obliquity-related variations to the latest marine oxygen isotope stacked record. The reconstructed MAT record largely concurs with the ~100 and 41-kyr (obliquity) paced glacial cycles and is superimposed by extreme changes of up to 7 to 10° Celsius within a few hundred years at the major glacial terminations and during marine isotope stage 3, suggesting an unprecedented North Atlantic – equatorial link. Using intermediate complexity transient climate modelling experiments, we demonstrate that ice volume and greenhouse gasses are the major forcing agents causing the orbital-related MAT changes, while direct precession-induced insolation changes had no significant impact on the high mountain vegetation during the last two glacial cycles. Peer-reviewed Publisher Version 44340 Article in Journal/Newspaper North Atlantic University of Leicester: Leicester Research Archive (LRA) Climate of the Past 7 1 299 316 |
institution |
Open Polar |
collection |
University of Leicester: Leicester Research Archive (LRA) |
op_collection_id |
ftleicester |
language |
unknown |
description |
Here we developed a composite pollen-based record of altitudinal vegetation changes from Lake Fúquene (5° N) in Colombia at 2540 m elevation. We quantitatively calibrated Arboreal Pollen percentages (AP%) into mean annual temperature (MAT) changes with an unprecedented ~60-year resolution over the past 284 000 years. An age model for the AP% record was constructed using frequency analysis in the depth domain and tuning of the distinct obliquity-related variations to the latest marine oxygen isotope stacked record. The reconstructed MAT record largely concurs with the ~100 and 41-kyr (obliquity) paced glacial cycles and is superimposed by extreme changes of up to 7 to 10° Celsius within a few hundred years at the major glacial terminations and during marine isotope stage 3, suggesting an unprecedented North Atlantic – equatorial link. Using intermediate complexity transient climate modelling experiments, we demonstrate that ice volume and greenhouse gasses are the major forcing agents causing the orbital-related MAT changes, while direct precession-induced insolation changes had no significant impact on the high mountain vegetation during the last two glacial cycles. Peer-reviewed Publisher Version 44340 |
format |
Article in Journal/Newspaper |
author |
Groot, M.H.M. Bogotá, R.G. Lourens, L.J. Hooghiemstra, H. Vriend, M. Berrio, Juan C. Tuenter, E. Van Der Plicht, J. Van Geel, B. Ziegler, M. Weber, S.L. Betancourt, A. Contreras, L. Gaviria, S. Giraldo, C. González, N. Jansen, J.H.F. Konert, M. Ortega, D. Rangel, O. Sarmiento, G. Vandenberghe, J. Van Der Hammen, T. Van Der Linden, M. Westerhoff, W. |
spellingShingle |
Groot, M.H.M. Bogotá, R.G. Lourens, L.J. Hooghiemstra, H. Vriend, M. Berrio, Juan C. Tuenter, E. Van Der Plicht, J. Van Geel, B. Ziegler, M. Weber, S.L. Betancourt, A. Contreras, L. Gaviria, S. Giraldo, C. González, N. Jansen, J.H.F. Konert, M. Ortega, D. Rangel, O. Sarmiento, G. Vandenberghe, J. Van Der Hammen, T. Van Der Linden, M. Westerhoff, W. Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles |
author_facet |
Groot, M.H.M. Bogotá, R.G. Lourens, L.J. Hooghiemstra, H. Vriend, M. Berrio, Juan C. Tuenter, E. Van Der Plicht, J. Van Geel, B. Ziegler, M. Weber, S.L. Betancourt, A. Contreras, L. Gaviria, S. Giraldo, C. González, N. Jansen, J.H.F. Konert, M. Ortega, D. Rangel, O. Sarmiento, G. Vandenberghe, J. Van Der Hammen, T. Van Der Linden, M. Westerhoff, W. |
author_sort |
Groot, M.H.M. |
title |
Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles |
title_short |
Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles |
title_full |
Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles |
title_fullStr |
Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles |
title_full_unstemmed |
Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles |
title_sort |
ultra-high resolution pollen record from the northern andes reveals rapid shifts in montane climates within the last two glacial cycles |
publisher |
Copernicus Publications on behalf of the European Geosciences Union |
publishDate |
2012 |
url |
http://hdl.handle.net/2381/19178 http://www.clim-past.net/7/299/2011/cp-7-299-2011.html https://doi.org/10.5194/cp-7-299-2011 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Climate of the Past, 2011, 7 (1), pp. 299-316 http://hdl.handle.net/2381/19178 http://www.clim-past.net/7/299/2011/cp-7-299-2011.html doi:10.5194/cp-7-299-2011 1814-9332 |
op_rights |
Copyright © the authors, 2011. This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-7-299-2011 |
container_title |
Climate of the Past |
container_volume |
7 |
container_issue |
1 |
container_start_page |
299 |
op_container_end_page |
316 |
_version_ |
1766131845788860416 |