Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand
We present a long‐term record of terrestrial climate change for the Early Paleogene of the Southern Hemisphere that complements previously reported marine temperature records. Using the MBT′‐CBT proxy, based on the distribution of soil bacterial glycerol dialkyl glycerol tetraether lipids, we recons...
Published in: | Geochemistry, Geophysics, Geosystems |
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Language: | English |
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ftsouthampton:oai:eprints.soton.ac.uk:437539 2023-08-27T04:05:58+02:00 Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand Pancost, Richard D. Taylor, Kyle W.R. Inglis, Gordon N. Kennedy, Elizabeth M. Handley, Luke Hollis, Christopher J. Crouch, Erica M. Pross, Jörg Huber, Matthew Schouten, Stefan 2013-12 https://eprints.soton.ac.uk/437539/ English eng Pancost, Richard D., Taylor, Kyle W.R., Inglis, Gordon N., Kennedy, Elizabeth M., Handley, Luke, Hollis, Christopher J., Crouch, Erica M., Pross, Jörg, Huber, Matthew and Schouten, Stefan (2013) Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand. Geochemistry, Geophysics, Geosystems, 14 (12), 5413-5429. (doi:10.1002/2013GC004935 <http://dx.doi.org/10.1002/2013GC004935>). Article PeerReviewed 2013 ftsouthampton https://doi.org/10.1002/2013GC004935 2023-08-03T22:24:24Z We present a long‐term record of terrestrial climate change for the Early Paleogene of the Southern Hemisphere that complements previously reported marine temperature records. Using the MBT′‐CBT proxy, based on the distribution of soil bacterial glycerol dialkyl glycerol tetraether lipids, we reconstructed mean annual air temperature (MAT) from the Middle Paleocene to Middle Eocene (62–42 Ma) for southern New Zealand. This record is consistent with temperature estimates derived from leaf fossils and palynology, as well as previously published MBT′‐CBT records, which provides confidence in absolute temperature estimates. Our record indicates that through this interval, temperatures were typically 5°C warmer than those of today at such latitudes, with more pronounced warming during the Early Eocene Climate Optimum (EECO; ∼50 Ma) when MAT was ∼20°C. Moreover, the EECO MATs are similar to those determined for Antarctica, with a weak high‐latitude terrestrial temperature gradient (∼5°C) developing by the Middle Eocene. We also document a short‐lived cooling episode in the early Late Paleocene when MAT was comparable to present. This record corroborates the trends documented by sea surface temperature (SST) proxies, although absolute SSTs are up to 6°C warmer than MATs. Although the high‐calibration error of the MBT′‐CBT proxy dictates caution, the good match between our MAT results and modeled temperatures supports the suggestion that SST records suffer from a warm (summer?) bias, particularly during times of peak warming. Article in Journal/Newspaper Antarc* Antarctica University of Southampton: e-Prints Soton New Zealand Pacific Geochemistry, Geophysics, Geosystems 14 12 5413 5429 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
We present a long‐term record of terrestrial climate change for the Early Paleogene of the Southern Hemisphere that complements previously reported marine temperature records. Using the MBT′‐CBT proxy, based on the distribution of soil bacterial glycerol dialkyl glycerol tetraether lipids, we reconstructed mean annual air temperature (MAT) from the Middle Paleocene to Middle Eocene (62–42 Ma) for southern New Zealand. This record is consistent with temperature estimates derived from leaf fossils and palynology, as well as previously published MBT′‐CBT records, which provides confidence in absolute temperature estimates. Our record indicates that through this interval, temperatures were typically 5°C warmer than those of today at such latitudes, with more pronounced warming during the Early Eocene Climate Optimum (EECO; ∼50 Ma) when MAT was ∼20°C. Moreover, the EECO MATs are similar to those determined for Antarctica, with a weak high‐latitude terrestrial temperature gradient (∼5°C) developing by the Middle Eocene. We also document a short‐lived cooling episode in the early Late Paleocene when MAT was comparable to present. This record corroborates the trends documented by sea surface temperature (SST) proxies, although absolute SSTs are up to 6°C warmer than MATs. Although the high‐calibration error of the MBT′‐CBT proxy dictates caution, the good match between our MAT results and modeled temperatures supports the suggestion that SST records suffer from a warm (summer?) bias, particularly during times of peak warming. |
format |
Article in Journal/Newspaper |
author |
Pancost, Richard D. Taylor, Kyle W.R. Inglis, Gordon N. Kennedy, Elizabeth M. Handley, Luke Hollis, Christopher J. Crouch, Erica M. Pross, Jörg Huber, Matthew Schouten, Stefan |
spellingShingle |
Pancost, Richard D. Taylor, Kyle W.R. Inglis, Gordon N. Kennedy, Elizabeth M. Handley, Luke Hollis, Christopher J. Crouch, Erica M. Pross, Jörg Huber, Matthew Schouten, Stefan Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand |
author_facet |
Pancost, Richard D. Taylor, Kyle W.R. Inglis, Gordon N. Kennedy, Elizabeth M. Handley, Luke Hollis, Christopher J. Crouch, Erica M. Pross, Jörg Huber, Matthew Schouten, Stefan |
author_sort |
Pancost, Richard D. |
title |
Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand |
title_short |
Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand |
title_full |
Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand |
title_fullStr |
Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand |
title_full_unstemmed |
Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand |
title_sort |
early paleogene evolution of terrestrial climate in the sw pacific, southern new zealand |
publishDate |
2013 |
url |
https://eprints.soton.ac.uk/437539/ |
geographic |
New Zealand Pacific |
geographic_facet |
New Zealand Pacific |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Pancost, Richard D., Taylor, Kyle W.R., Inglis, Gordon N., Kennedy, Elizabeth M., Handley, Luke, Hollis, Christopher J., Crouch, Erica M., Pross, Jörg, Huber, Matthew and Schouten, Stefan (2013) Early Paleogene evolution of terrestrial climate in the SW Pacific, Southern New Zealand. Geochemistry, Geophysics, Geosystems, 14 (12), 5413-5429. (doi:10.1002/2013GC004935 <http://dx.doi.org/10.1002/2013GC004935>). |
op_doi |
https://doi.org/10.1002/2013GC004935 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
14 |
container_issue |
12 |
container_start_page |
5413 |
op_container_end_page |
5429 |
_version_ |
1775346690384986112 |