A man spent 52 winters recording snowfall by hand in Colorado. His notebooks now help scientists track climate change

In a remote patch of Colorado's Gunnison National Forest, four miles from the nearest ploughed road, a man known simply as Billy Barr has spent 52 consecutive winters recording daily snowfall, temperature and weather observations from his off-grid cabin at roughly 9,600 feet. Barr first began jotting down snow measurements in 1974, shortly after graduating from Rutgers University with a degree in environmental science, initially just to keep himself occupied through the long, isolated winters near Gothic, a former silver mining town now home to the Rocky Mountain Biological Laboratory.

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