The relative roles of CO2 and palaeogeography in determining late Miocene climate: results from a terrestrial model–data comparison
The late Miocene 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 200 ppm. We present results from fully coupled atmosphere-ocean-vegetation simulations for the late Miocene that examine the relative role...
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Copernicus Publications
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fttriple:oai:gotriple.eu:oai:doaj.org/article:c1aed9d020c942e38d5a558a19494e95 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 A. M. Haywood J. T. Eronen M. J. Pound U. Salzmann R. Flecker D. J. Lunt C. D. Bradshaw 2012-08-01 https://doi.org/10.5194/cp-8-1257-2012 http://www.clim-past.net/8/1257/2012/cp-8-1257-2012.pdf https://doaj.org/article/c1aed9d020c942e38d5a558a19494e95 en eng Copernicus Publications doi:10.5194/cp-8-1257-2012 1814-9324 1814-9332 http://www.clim-past.net/8/1257/2012/cp-8-1257-2012.pdf https://doaj.org/article/c1aed9d020c942e38d5a558a19494e95 undefined Climate of the Past, Vol 8, Iss 4, Pp 1257-1285 (2012) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2012 fttriple https://doi.org/10.5194/cp-8-1257-2012 2023-01-22T17:50:52Z The late Miocene 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 200 ppm. 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 these data accurately reflect the late Miocene climate, and that the late Miocene palaeogeographic reconstruction used in the model is robust, then results indicate that: 1. Both palaeogeography and atmospheric CO2 contribute to the proxy-derived precipitation differences between the late Miocene and modern reference climates. However these contributions exibit synergy and so do not add linearly. 2. The vast majority of the proxy-derived temperature differences between the late Miocene and modern reference climates can only 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 Unknown Climate of the Past 8 4 1257 1285 |
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envir geo A. M. Haywood J. T. Eronen M. J. Pound U. Salzmann R. Flecker D. J. Lunt C. D. Bradshaw The relative roles of CO2 and palaeogeography in determining late Miocene climate: results from a terrestrial model–data comparison |
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envir geo |
description |
The late Miocene 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 200 ppm. 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 these data accurately reflect the late Miocene climate, and that the late Miocene palaeogeographic reconstruction used in the model is robust, then results indicate that: 1. Both palaeogeography and atmospheric CO2 contribute to the proxy-derived precipitation differences between the late Miocene and modern reference climates. However these contributions exibit synergy and so do not add linearly. 2. The vast majority of the proxy-derived temperature differences between the late Miocene and modern reference climates can only 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 |
A. M. Haywood J. T. Eronen M. J. Pound U. Salzmann R. Flecker D. J. Lunt C. D. Bradshaw |
author_facet |
A. M. Haywood J. T. Eronen M. J. Pound U. Salzmann R. Flecker D. J. Lunt C. D. Bradshaw |
author_sort |
A. M. Haywood |
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://doi.org/10.5194/cp-8-1257-2012 http://www.clim-past.net/8/1257/2012/cp-8-1257-2012.pdf https://doaj.org/article/c1aed9d020c942e38d5a558a19494e95 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Climate of the Past, Vol 8, Iss 4, Pp 1257-1285 (2012) |
op_relation |
doi:10.5194/cp-8-1257-2012 1814-9324 1814-9332 http://www.clim-past.net/8/1257/2012/cp-8-1257-2012.pdf https://doaj.org/article/c1aed9d020c942e38d5a558a19494e95 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-8-1257-2012 |
container_title |
Climate of the Past |
container_volume |
8 |
container_issue |
4 |
container_start_page |
1257 |
op_container_end_page |
1285 |
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1766031353194741760 |