Many of the impacts of climate change have to do with increased variance rather than with shifted average. For example, every +0C day in the winter leads to sn

Many of the impacts of climate change have to do with increased variance rather than with shifted average. For example, every +0C day in the winter leads to snow melt. The total amount of snow collected per winter depends highly on the number of +0C days in the winter. Your average temperature might only go from -11C to -10C, but if there are 20 additional +0C days, you might end up with a lot less snow cover.