Michael Allchin

University of Northern British Columbia · Natural Resources and Environmental Studies Institute

Several studies based on the longest remotely sensed record of Northern Hemisphere seasonal snow cover have indicated that its extent has increased over large areas of Eurasia and North America during the transition from summer to winter. Given current understanding of widespread warming trends, this finding is somewhat surprising. It has been sugg...

The catastrophic August 2014 Mount Polley tailings spill, the second largest ever documented, sent ~18 Mm³ of waste plunging to the bottom of the >100 m deep West Basin of Quesnel Lake, British Columbia, a critical West Coast salmon habitat. To understand the impact of the spill on the lake, including the fate of suspended solids, we examine change...

The potential for anthropogenic climate change to impact patterns of seasonal snow cover has motivated numerous studies seeking trends in its extent and duration. Many have been based on the NOAA-Rutgers record of Northern Hemisphere snow cover. Several studies have found augmented early-season snow identified from this archive to be anomalous, and...

Seasonal snow-cover modulates water and energy budgets across large areas of the Northern Hemisphere. Previous research, based on satellite imagery interpreted and curated by the Rutgers University Snow Laboratory, has identified significant negative and positive trends in annual snow-covered duration and area at hemispheric and continental scales...