Ice sheets
During the Last Glacial Maximum (LGM, ~21,000 years ago), the Laurentide ice sheet covered large parts of North America – reaching an ice thickness of more than 3 km, before it finally melted [...] developed climate-ice model to draw conclusions about its spatial expansion. They discovered that in particular the snowfall in summer favoured the growth of the ice sheet and influenced the sea level.
[...] melted at the end of the ice age. To date, there have been few detailed studies of the evolution of the North American ice sheet into the LGM. In a new study published in the journal Nature Geoscience