Process-explicit simulations of human migration in North America 19,000 years ago to present

We simulated the peopling of North America from 19,000 years BP to present using the Climate-Informed Genetic Model. We used a set of 4,950 values for the demographic parameters of the model, based on a previous optimization of these parameters on genetic data. We ran these simulations twice: once parametrised with the HadCM3 palaeoclimate model, and once with the TraCE-21ka palaeoclimate simulation. <br> Here we provide the median and MAD (median absolute deviation) of human abundance in North America, averaged across each set of simulations based on the HadCM3 and TraCE-21ka palaeoclimate models. These are provided as GeoTIFF files in standard longitude-latitude WGS84 projection. The extent is North America (170W to 49W, 15N to 90N) at a spatial resolution of 1 degree by 1 degree. The timescale is from 19,000 years ago to present at a temporal resolution of 25 years.