ATMOSPHERIC DUST UNDER GLACIAL AND INTERGLACIAL CONDITIONS

The uplift, transport and deposition of dust have been implemented in the LMDz AGCM. Simulations of atmospheric dust transport have been per formed under present day (PD) and Last Glacial Maximum (LGM) condition s. For the PD climate the large-scale atmospheric dust transport as in ferred from atmospheric measurements is reproduced. Increased dust amo unts are simulated almost everywhere for the LGM climate, and the conc entration of dust in Antarctic ice is increased as inferred from ice c ores. The model simulates substantially increased dust concentrations in Greenland ice, however they are still lower than values reported fr om ice cores.