However, what has caught our attention more and more is the changing of the 'light brown' soils to dark brown, where they are obviously becoming wet. We see this around lakes and streams all of the time:Priscu Stream entering Lake Bonney, note the dark, wet soils around both water bodies.
But we are now seeing it in places that do not have obvious water sources (snow, lakes, streams, etc.). This is a strong indication of the melting of ground ice and permafrost in the McMurdo Dry Valleys:South shore of Lake Hoare
These wetted spots across the landscape are indicative of a strong change in the Dry Valleys ecosystem that we look forward to studying for years to come.