Skip to main content
Article thumbnail
Location of Repository

Comparison of mid-Pliocene climate predictions from the HadAM3 and GCMAM3 General Circulation Models

By Alan M. Haywood, Mark A. Chandler, Paul J. Valdes, Ulrich Salzmann, Daniel J. Lunt and Harry J. Dowsett


The mid-Pliocene warm period (ca. 3 to 3.3 million years ago) has become an important interval of time for\ud palaeoclimate modelling exercises, with a large number of studies published during the last decade. However,\ud there has been no attempt to assess the degree of model dependency of the results obtained. Here we present\ud an initial comparison of mid-Pliocene climatologies produced by the Goddard Institute for Space Studies and\ud Hadley Centre for Climate Prediction and Research atmosphere-only General Circulation Models (GCMAM3\ud and HadAM3). Whilst both models are consistent in the simulation of broad-scale differences inmid-Pliocene\ud surface air temperature and total precipitation rates, significant variation is noted on regional and local scales.\ud There are also significant differences in the model predictions of total cloud cover. A terrestrial data/model\ud comparison, facilitated by the BIOME 4 model and a new data set of Piacenzian Stage land cover [Salzmann, U.,\ud Haywood, A.M., Lunt, D.J., Valdes, P.J., Hill, D.J., (2008). A new global biome reconstruction and data model\ud comparison for the Middle Pliocene. Global Ecology and Biogeography 17, 432-447, doi:10.1111/j.1466-\ud 8238.2007.00381.x] and combined with the use of Kappa statistics, indicates that HadAM3-based biome\ud predictions provide a closer fit to proxy data in the mid to high-latitudes. However, GCMAM3-based biomes in\ud the tropics provide the closest fit to proxy data

Topics: Ecology and Environment, Earth Sciences
Publisher: Elsevier
Year: 2009
DOI identifier: 10.1016/j.gloplacha.2008.12.014
OAI identifier:
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • (external link)
  • (external link)
  • (external link)
  • (external link)
  • Suggested articles

    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.