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Climate of the Past An interactive open-access journal of the European Geosciences Union
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Volume 3, issue 2
Clim. Past, 3, 261–277, 2007
https://doi.org/10.5194/cp-3-261-2007
© Author(s) 2007. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

Special issue: Modelling late Quaternary climate

Clim. Past, 3, 261–277, 2007
https://doi.org/10.5194/cp-3-261-2007
© Author(s) 2007. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  04 Jun 2007

04 Jun 2007

Results of PMIP2 coupled simulations of the Mid-Holocene and Last Glacial Maximum – Part 1: experiments and large-scale features

P. Braconnot1, B. Otto-Bliesner2, S. Harrison3, S. Joussaume1, J.-Y. Peterchmitt1, A. Abe-Ouchi4, M. Crucifix5,6, E. Driesschaert6, Th. Fichefet6, C. D. Hewitt5, M. Kageyama1, A. Kitoh7, A. Laîné1, M.-F. Loutre6, O. Marti1, U. Merkel8, G. Ramstein1, P. Valdes3, S. L. Weber9, Y. Yu10, and Y. Zhao3 P. Braconnot et al.
  • 1Laboratoire des Sciences du Climat et de l'Environnement, Unité mixte CEA-CNRS-UVSQ, Orme des Merisiers, bât 712, 91191 Gif-sur-Yvette Cedex, France
  • 2National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, Colorado, USA
  • 3School of Geographical Sciences, University of Bristol, Bristol, BS8 1SS, UK
  • 4Center for Climate System Research, The University of Tokyo, Japan 277-8568 and FRCGC/JAMSTEC, Yokohama 236-0001, Japan
  • 5Met Office Hadley Centre, Fitzroy Road, Exeter EX1 3PB, UK
  • 6Université Catholique de Louvain, Institut d'Astronomie et de Géophysique Georges Lemaître, B-1348 Louvain-la-Neuve, Belgium
  • 7Meteorological Research Institute, Tsukuba, Ibaraki 305-0052, Japan
  • 8Universität Bremen, FB5 Geosciences, Geosystem modelling, P.O. Box 330 440, 28334 Bremen, Germany
  • 9Royal Netherlands Meteorological Institute, P.O. Box 201, 3730 AE De Bilt, The Netherlands
  • 10LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, P.O. Box 9804, Beijing 100029, P. R. China

Abstract. A set of coupled ocean-atmosphere simulations using state of the art climate models is now available for the Last Glacial Maximum and the Mid-Holocene through the second phase of the Paleoclimate Modeling Intercomparison Project (PMIP2). This study presents the large-scale features of the simulated climates and compares the new model results to those of the atmospheric models from the first phase of the PMIP, for which sea surface temperature was prescribed or computed using simple slab ocean formulations. We consider the large-scale features of the climate change, pointing out some of the major differences between the different sets of experiments. We show in particular that systematic differences between PMIP1 and PMIP2 simulations are due to the interactive ocean, such as the amplification of the African monsoon at the Mid-Holocene or the change in precipitation in mid-latitudes at the LGM. Also the PMIP2 simulations are in general in better agreement with data than PMIP1 simulations.

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