The Last Glacial Maximum and Heinrich Event 1 in terms of climate and vegetation around the Alboran Sea: a preliminary model-data comparison

Masa Kageyama (1, 2) , Nathalie Combourieu-Nebout (1) , Pierre Sepulchre (1, 2) , Odile Peyron (3) , Gerhard Krinner (4) , Gilles Ramstein (1, 2) , Jean-Pierre Cazet (1)

1 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
2 CLIM - Modélisation du climat
3 LCE - Laboratoire de chrono-écologie - CNRS (UMR6565)
4 LGGE - Laboratoire de glaciologie et géophysique de l'environnement

The Heinrich Event 1, the most recent of the glacial North Atlantic large iceberg discharges, is well documented in continental and marine records, but this large perturbation of the climate system has rarely been simulated. Here we propose a preliminary model-data comparison for this period, which we compare to the Last Glacial Maximum state. The pollen record from one specific core from the western Mediterranean Sea (ODP site 976) is analysed both in terms of vegetation distribution and climatic implication. The climate and vegetation of both periods are then simulated and compared to the pollen-based data.

Mots clés: Heinrich 1; Last Glacial Maximum; Europe and western Mediterranean Sea; Pollen record; Climatic reconstruction; Atmospheric General Circulation Model with high resolution model over Europe; Dynamical Global Vegetation Model

Domaines: Glaciologie

Masa Kageyama, Nathalie Combourieu-Nebout, Pierre Sepulchre, Odile Peyron, Gerhard Krinner, et al.. The Last Glacial Maximum and Heinrich Event 1 in terms of climate and vegetation around the Alboran Sea: a preliminary model-data comparison. Comptes Rendus Géoscience, 2005, 337 (10-11), pp.983 à 992. ⟨10.1016/j.crte.2005.04.012⟩. ⟨insu-00374596⟩