For a fuller description of the paper itself, go to the end of this web page.
Each simulation published in this paper corresponds to a unique 5 or 6 character code on the web pages.
The following table lists the name of the simulation as used in the paper, and the corresponding code name
The webpage gives you the ability to examine the published simulations, but you can also download the raw (netcdf) files to perform your own analysis. Detailed instructions on how to use the webpages and access the data can be found here: Using_BRIDGE_webpages.pdf
There are four simulations used in this paper, two for late Miocene and two for Preindustrial climates
You can have make you own analysis and plots by going here
| Simulation Name as in Paper | Simulation name on web pages |
|---|---|
| LM280 (Late Miocene 280ppm CO2) | tczth |
| LM400 (Late Miocene 400ppm CO2) | tczti |
| CTRL (Preindustrial 280ppm CO2) | tcztg |
| CTRL400 (Preindustrial 400ppm CO2) | tcztk |
This paper demonstrates that both the CO2 concentration and the palaeogeography of the late Miocene may contribute to precipitation differences, but that only higher CO2 contributes to temperature differences.
| Name | Bradshaw et al |
|---|---|
| Brief Description | This paper demonstrates that both the CO2 concentration and the palaeogeography of the late Miocene may contribute to precipitation differences, but that only higher CO2 contributes to temperature differences. |
| Full Author List | Catherine D. Bradshaw, Daniel J. Lunt, Rachel Flecker, Ulrich Salzmann, Matthew J. Pound, Alan M. Haywood, Jussi T. Eronen |
| Title | The relative roles of CO2 and palaeogeography in determining late Miocene climate: results from a terrestrial model data comparison |
| Year | 2012 |
| Journal | Climate of the Past |
| Volume | 8 |
| Issue | |
| Pages | 1257-1285 |
| DOI | 10.5194/cp-8-1257-2012 |
| Contact's Name | Catherine Bradshaw |
| Contact's email | C.Bradshaw@bristol.ac.uk |
| Abstract | 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. |