Palaeogeographic controls on climate and proxy interpretation

Lunt, Daniel J.; Farnsworth, Alex; Loptson, Claire; Foster, Gavin L.; Markwick, Paul; O'Brien, Charlotte L.; Pancost, Richard D.; Robinson, Stuart A.; Wrobel, Neil

doi:https://doi.org/10.5194/cp-12-1181-2016

Articles | Volume 12, issue 5

https://doi.org/10.5194/cp-12-1181-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/cp-12-1181-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 12, issue 5

Research article

|

20 May 2016

Research article |

| 20 May 2016

Palaeogeographic controls on climate and proxy interpretation

Daniel J. Lunt, Alex Farnsworth, Claire Loptson, Gavin L. Foster, Paul Markwick, Charlotte L. O'Brien, Richard D. Pancost, Stuart A. Robinson, and Neil Wrobel

Supplement

https://doi.org/10.5194/cp-12-1181-2016-supplement

Data sets

Bristol Research Initiative for the Dynamic Global Environment, Earth Systems Modelling within Bridge, A Database of Model Simulations BRIDGE http://www.bridge.bris.ac.uk/resources/simulations

Short summary

We explore the influence of changing geography from the period ~ 150 million years ago to ~ 35 million years ago, using a set of 19 climate model simulations. We find that without any CO₂ change, the global mean temperature is remarkably constant, but that regionally there are significant changes in temperature which we link back to changes in ocean circulation. Finally, we explore the implications of our findings for the interpretation of geological indicators of past temperatures.