The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison
The Late Miocene (∼11.6–5.3 Ma) palaeorecord provides evidence for a warmer and wetter climate than that of today and there is uncertainty in the palaeo-CO2 record of at least 150 ppmv. We present results from fully coupled atmosphere-ocean-vegetation simulations for the Late Miocene that examine th...
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:5736 2023-05-15T16:40:55+02:00 The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison Bradshaw, Catherine Lunt, Daniel Flecker, Rachel Salzmann, Ulrich Pound, Matthew Haywood, Alan Eronen, Jussi 2012-08-16 application/pdf application/vnd.ms-excel https://nrl.northumbria.ac.uk/id/eprint/5736/ https://doi.org/10.5194/cpd-8-715-2012 https://nrl.northumbria.ac.uk/id/eprint/5736/1/cpd-8-715-2012.pdf https://nrl.northumbria.ac.uk/id/eprint/5736/2/Palaeogeography_CO2_Paper_120223_SupplementaryInfo.xls en eng Copernicus Publications https://nrl.northumbria.ac.uk/id/eprint/5736/1/cpd-8-715-2012.pdf https://nrl.northumbria.ac.uk/id/eprint/5736/2/Palaeogeography_CO2_Paper_120223_SupplementaryInfo.xls Bradshaw, Catherine, Lunt, Daniel, Flecker, Rachel, Salzmann, Ulrich, Pound, Matthew, Haywood, Alan and Eronen, Jussi (2012) The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison. Climate of the Past, 8 (2). pp. 715-786. ISSN 1814-9324 cc_by CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2012 ftunivnorthumb https://doi.org/10.5194/cpd-8-715-2012 2022-09-25T05:53:02Z The Late Miocene (∼11.6–5.3 Ma) palaeorecord provides evidence for a warmer and wetter climate than that of today and there is uncertainty in the palaeo-CO2 record of at least 150 ppmv. We present results from fully coupled atmosphere-ocean-vegetation simulations for the Late Miocene that examine the relative roles of palaeogeography (topography and ice sheet geometry) and CO2 concentration in the determination of Late Miocene climate through comprehensive terrestrial model-data comparisons. Assuming that the data accurately reflects the Late Miocene climate, and that the Late Miocene palaeogeographic reconstruction used in the model is robust, then results indicate that the proxy-derived precipitation differences between the Late Miocene and modern can be largely accounted for by the palaeogeographic changes alone. However, the proxy-derived temperatures differences between the Late Miocene and modern can only begin to be accounted for if we assume a palaeo-CO2 concentration towards the higher end of the range of estimates. Article in Journal/Newspaper Ice Sheet Northumbria University, Newcastle: Northumbria Research Link (NRL) |
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Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Bradshaw, Catherine Lunt, Daniel Flecker, Rachel Salzmann, Ulrich Pound, Matthew Haywood, Alan Eronen, Jussi The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
The Late Miocene (∼11.6–5.3 Ma) palaeorecord provides evidence for a warmer and wetter climate than that of today and there is uncertainty in the palaeo-CO2 record of at least 150 ppmv. We present results from fully coupled atmosphere-ocean-vegetation simulations for the Late Miocene that examine the relative roles of palaeogeography (topography and ice sheet geometry) and CO2 concentration in the determination of Late Miocene climate through comprehensive terrestrial model-data comparisons. Assuming that the data accurately reflects the Late Miocene climate, and that the Late Miocene palaeogeographic reconstruction used in the model is robust, then results indicate that the proxy-derived precipitation differences between the Late Miocene and modern can be largely accounted for by the palaeogeographic changes alone. However, the proxy-derived temperatures differences between the Late Miocene and modern can only begin to be accounted for if we assume a palaeo-CO2 concentration towards the higher end of the range of estimates. |
format |
Article in Journal/Newspaper |
author |
Bradshaw, Catherine Lunt, Daniel Flecker, Rachel Salzmann, Ulrich Pound, Matthew Haywood, Alan Eronen, Jussi |
author_facet |
Bradshaw, Catherine Lunt, Daniel Flecker, Rachel Salzmann, Ulrich Pound, Matthew Haywood, Alan Eronen, Jussi |
author_sort |
Bradshaw, Catherine |
title |
The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison |
title_short |
The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison |
title_full |
The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison |
title_fullStr |
The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison |
title_full_unstemmed |
The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison |
title_sort |
relative roles of co2 and palaeogeography in determining late miocene climate: results from a terrestrial model-data comparison |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://nrl.northumbria.ac.uk/id/eprint/5736/ https://doi.org/10.5194/cpd-8-715-2012 https://nrl.northumbria.ac.uk/id/eprint/5736/1/cpd-8-715-2012.pdf https://nrl.northumbria.ac.uk/id/eprint/5736/2/Palaeogeography_CO2_Paper_120223_SupplementaryInfo.xls |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/5736/1/cpd-8-715-2012.pdf https://nrl.northumbria.ac.uk/id/eprint/5736/2/Palaeogeography_CO2_Paper_120223_SupplementaryInfo.xls Bradshaw, Catherine, Lunt, Daniel, Flecker, Rachel, Salzmann, Ulrich, Pound, Matthew, Haywood, Alan and Eronen, Jussi (2012) The relative roles of CO2 and palaeogeography in determining Late Miocene climate: results from a terrestrial model-data comparison. Climate of the Past, 8 (2). pp. 715-786. ISSN 1814-9324 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cpd-8-715-2012 |
_version_ |
1766031354515947520 |