Dataset for Northward expansion of westerlies over SE Australia

Here we provide wind regime data for the two sites for the present day, based on climate reanalysis using data from the European Centre for Medium Range Weather Forecasting (ECMWF) aided by atmospheric general circulation models (GCMs). We provide the wind regime data for the two sites for the LGM time slice by processing data produced by the MPI-ESM-P model (rlilpl-P experiment). From there we performed dust transport and source footprint analyses for the likelihood of aeolian transported particles arriving at a given site, from a given area, using the Lagrangian particle dispersal model FLEXPART, driven by the respective GCM product synoptic data for the LGM and present day.

Our simulations are based on the transport of grain sizes 20, 60 and 120 µm in size. KMZ files refer to the sites sampled for the study. Files beginning with PD_(ERA-INTERIM)... refer to present-day wind roses based on climate reanalysis using the ERA dataset.

Files beginning with LGM_(MPI-ESM-P)... refer to LGM-age wind roses based on data farmed from the MPI-earth system model. Files beginning with PD_SC and PD_LM refer to results of the Lagrangian footprint analysis of particle size transport under present-day conditions to Spring Creek (SC) and Lake Mungo (LM) in the Willandra Lakes respectively. Files beginning with LGM_SC and LGM_LM refer to results of the Lagrangian footprint analysis of particle size transport under modelled LGM conditions to Spring Creek (SC) and Lake Mungo (LM) in the Willandra Lakes respectively.

Files including L-EVA1125-1128 in the name provide primary data for the calculation of luminescence ages from the Willandra Lakes. Files including K1917-1919 in the name provide primary data for the calculation of luminescence ages from Spring Creek.