New Delhi, May 25 -- As a child, Giannis Stathas remembers being snowed in for days at a time in Arachova, a village famous for its ski resort and long known as a winter playground for Greeks.

"We couldn't go to school because of the snow," said Stathas, now mayor of Arachova and the surrounding area. "We might have been stuck at home for two days without being able to go out because of the snow."

"Now we don't see that here anymore."

Stathas says snowfall on Mount Parnassos at an altitude of 2,400 meters (7,874 feet) is what once fell at 300 meters (984 feet).

New findings from the University of Cambridge's Scott Polar Research Institute confirm the mayor's observations.

"What we found across 10 mountains of Greece, across the mainl...