2021 was a bad year for glaciers in western North America — and it's about to get much worse

Glaciers are primarily nourished by snowfall during the winter and depleted by melting seasonal snow and ice during summer, releasing large volumes of cool water into headwater streams. Glacier runoff buffers aquatic ecosystems that can suffer from heat or water stress, especially during late summer or years of drought...

https://theconversation.com/2021-was-a-bad-year-for-glaciers-in-western-north-america-and-its-about-to-get-much-worse-170847