Globe Climate: Wildfire ash speeds up glacier melt

Sierra Bein
The Globe and Mail
September 15, 2025

John Pomeroy is familiar with Peyto Glacier’s rapid melting.

He’s a distinguished professor and director of the Global Water Futures Observatories at the University of Saskatchewan, and has studied the ice mass in Banff National Park since 2008, visiting several times a year to adjust weather stations and photograph changes.

But on a helicopter trip through the Canadian Rockies to the glacier one year ago, Prof. Pomeroy and his team of scientists gasped – stunned to see how much it had transformed since even his previous visit.

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Wildfire ash is accelerating glacier melt in the Canadian Rockies

Andrea Woo
The Globe and Mail
September 5, 2025

As the helicopter turned toward Peyto Glacier, located in the Park Ranges of the Canadian Rockies, John Pomeroy and his team of scientists gasped.

Prof. Pomeroy, a distinguished professor and director of the Global Water Futures Observatories at the University of Saskatchewan, has studied the ice mass in Banff National Park since 2008, visiting several times a year to adjust weather stations and photograph changes.

He is familiar with the glacier’s rapid melting. It retreats tens of metres per year – 80 metres in 2021 alone. But on the helicopter ride last September, he was stunned to see how much it had transformed since even his previous visit…

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