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...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
European Geosciences Union
2012
|
Subjects: | |
Online Access: | https://nrl.northumbria.ac.uk/id/eprint/13955/ https://doi.org/10.5194/cp-8-1257-2012 https://nrl.northumbria.ac.uk/id/eprint/13955/1/cp-8-1257-2012.pdf |
id |
ftunivnorthumb:oai:nrl.northumbria.ac.uk:13955 |
---|---|
record_format |
openpolar |
spelling |
ftunivnorthumb:oai:nrl.northumbria.ac.uk:13955 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 application/pdf https://nrl.northumbria.ac.uk/id/eprint/13955/ https://doi.org/10.5194/cp-8-1257-2012 https://nrl.northumbria.ac.uk/id/eprint/13955/1/cp-8-1257-2012.pdf en eng European Geosciences Union https://nrl.northumbria.ac.uk/id/eprint/13955/1/cp-8-1257-2012.pdf 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 (4). pp. 1257-1285. ISSN 1814-9332 cc_by CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2012 ftunivnorthumb https://doi.org/10.5194/cp-8-1257-2012 2022-09-25T05:58:17Z 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 Northumbria University, Newcastle: Northumbria Research Link (NRL) Climate of the Past 8 4 1257 1285 |
institution |
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 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 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 |
European Geosciences Union |
publishDate |
2012 |
url |
https://nrl.northumbria.ac.uk/id/eprint/13955/ https://doi.org/10.5194/cp-8-1257-2012 https://nrl.northumbria.ac.uk/id/eprint/13955/1/cp-8-1257-2012.pdf |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/13955/1/cp-8-1257-2012.pdf 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 (4). pp. 1257-1285. ISSN 1814-9332 |
op_rights |
cc_by |
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 |
_version_ |
1766031355665186816 |