By: John Pomeroy , University of Saskatchewan
Rain-on-snow floods – deluges caused when rain melts snow – are becoming more frequent and are spreading into regions where they were once rare as the climate warms and weather becomes more extreme. These events can be catastrophic: major floods in the Canadian Rockies in 2013 resulted in the most expensive natural disaster in the country’s history. Rain-on-snow events are also contributing to the melting of mountain snowpacks, sources of water for many areas that are declining dramatically as temperatures rise. A panel of experts will present new findings about how climate change is affecting rain-on-snow floods and contributing to the collapse of mountain snowpacks.