A renowned Swiss-American climate change scientist died after falling into a crevasse while conducting research on ice in Greenland, authorities and reports said Wednesday.

Konrad Steffen, director of the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), was working near Ilulissat on Saturday when he was reported missing, police said.

His death was confirmed by WSL in a statement on Monday, which said staffers at the institute were “shocked and aghast” by the loss of Steffen.

“We have not only lost the Director of our institute, but also a committed scientist and above all a unique and generous person and friend,” the statement said.

Fellow scientist Kathy Riklin said it seemed a snow bridge had collapsed under Steffen, causing him to plummet into the crevasse, Agence France-Presse reported.

The tragic accident occurred less than a mile from the research station Steffen established in 1990 — known as “Swiss Camp” — where he made an annual expedition.

Assisted by NASA and the US National Science Foundation, Steffen had been building a network of automatic weather stations there.

Steffen’s 30-year study observing the changing nature of Greenland’s ice sheet confirmed rising temperatures and sea levels, the most distinct features of climate change, The Washington Post reported.

“That got some attention,” Steffen said at the time

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