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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ftunivfrankfurt:oai:publikationen.ub.uni-frankfurt.de:29881 2023-05-15T16:40:57+02:00 The relative roles of CO2 and palaeogeography in determining late Miocene climate: results from a terrestrial model–data comparison Bradshaw, Catherine D. Lunt, Daniel J. Flecker, Rachel Salzmann, Ulrich Pound, Matthew J. Haywood, Alan M. Eronen, Jussi 2012-08-16 application/octet-stream http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/29881 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-298812 https://doi.org/10.5194/cp-8-1257-2012 http://publikationen.ub.uni-frankfurt.de/files/29881/container.zip eng eng http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/29881 urn:nbn:de:hebis:30:3-298812 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-298812 https://doi.org/10.5194/cp-8-1257-2012 http://publikationen.ub.uni-frankfurt.de/files/29881/container.zip http://creativecommons.org/licenses/by/3.0/de/deed.de info:eu-repo/semantics/restrictedAccess CC-BY ddc:550 article doc-type:article 2012 ftunivfrankfurt https://doi.org/10.5194/cp-8-1257-2012 2022-09-11T23:04:11Z 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 Publication Server of Goethe University Frankfurt am Main Climate of the Past 8 4 1257 1285 |
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Publication Server of Goethe University Frankfurt am Main |
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ftunivfrankfurt |
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English |
topic |
ddc:550 |
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ddc:550 Bradshaw, Catherine D. Lunt, Daniel J. Flecker, Rachel Salzmann, Ulrich Pound, Matthew J. Haywood, Alan M. Eronen, Jussi The relative roles of CO2 and palaeogeography in determining late Miocene climate: results from a terrestrial model–data comparison |
topic_facet |
ddc:550 |
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 |
Bradshaw, Catherine D. Lunt, Daniel J. Flecker, Rachel Salzmann, Ulrich Pound, Matthew J. Haywood, Alan M. Eronen, Jussi |
author_facet |
Bradshaw, Catherine D. Lunt, Daniel J. Flecker, Rachel Salzmann, Ulrich Pound, Matthew J. Haywood, Alan M. Eronen, Jussi |
author_sort |
Bradshaw, Catherine D. |
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 |
publishDate |
2012 |
url |
http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/29881 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-298812 https://doi.org/10.5194/cp-8-1257-2012 http://publikationen.ub.uni-frankfurt.de/files/29881/container.zip |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/29881 urn:nbn:de:hebis:30:3-298812 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-298812 https://doi.org/10.5194/cp-8-1257-2012 http://publikationen.ub.uni-frankfurt.de/files/29881/container.zip |
op_rights |
http://creativecommons.org/licenses/by/3.0/de/deed.de info:eu-repo/semantics/restrictedAccess |
op_rightsnorm |
CC-BY |
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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1766031391318867968 |