Monsoon changes for 6000 years ago: Results of 18 simulations from the Paleoclimate Modeling Intercomparison Project (PMIP)

S. Joussaume (1, 2) , Ke Taylor , P. Braconnot (1, 2) , Jfb Mitchell , Je Kutzbach , Sp Harrison , Ic Prentice , Aj Broccoli , A Abe-Ouchi , Pj Bartlein , C Bonfils , B Dong , Joel Guiot (3) , K Herterich , Cd Hewitt , D Jolly (4) , Jw Kim , A Kislov , A Kitoh , Mf Loutre , V. Masson (1, 5) , B Mcavaney , N Mcfarlane , N. De Noblet (1, 6) , Wr Peltier , J.Y. Peterschmitt (1, 7) , D Pollard , D Rind , Jf Royer , Me Schlesinger , J Syktus , S Thompson , P Valdes , G Vettoretti , Rs Webb , U Wyputta

1 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
2 MERMAID - Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics
3 IMEP - Institut Méditerranéen d'Ecologie et de Paléoécologie
4 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement
5 GLACCIOS - Glaces et Continents, Climats et Isotopes Stables
6 ESTIMR - Extrèmes : Statistiques, Impacts et Régionalisation
7 CLIM - Modélisation du climat

Amplification of the northern hemisphere seasonal cycle of insolation during the mid-Holocene causes a northward shift of the main regions of monsoon precipitation over Africa and India in all 18 simulations conducted for the Paleoclimate Modeling Intercomparison Project (PMIP). Differences among simulations are related to differences in model formulation. Despite qualitative agreement with paleoecological estimates of biome shifts, the magnitude of the monsoon increases over northern Africa are underestimated by all the models.

Domaines: Milieux et Changements globaux

S. Joussaume, Ke Taylor, P. Braconnot, Jfb Mitchell, Je Kutzbach, et al.. Monsoon changes for 6000 years ago: Results of 18 simulations from the Paleoclimate Modeling Intercomparison Project (PMIP). Geophysical Research Letters, 1999, 26 (7), pp.859-862. ⟨10.1029/1999GL900126⟩. ⟨hal-01457628⟩