Warming Climate Can Increase Avalanche Risk, Studies Show

Ned Bair, a researcher at the University of California, Santa Barbara and former research chairman of the American Avalanche Association, presented studies showing that warming climate can increase avalanche risk in California's Sierra Nevada through heavier and wetter snowfall patterns, even as total snowy days decrease, due to more intense atmospheric river events. The research reveals a concerning paradox where the overall number of snowy days is diminishing, yet when precipitation does occur, it tends to be more concentrated and intense, creating conditions ripe for dangerous avalanches. 'We do expect that in the highest elevations in the Sierra, for example, there to actually be more snowfall,' Bair explained, highlighting how climate change is altering precipitation patterns rather than simply reducing snowfall entirely. The findings underscore how atmospheric rivers, which bring concentrated moisture from the ocean, play a critical role in determining avalanche risk, with their intensity becoming more important than the mere presence of snow.