‘Catastrophic year’ as Swiss glaciers lose 5% of ice after heatwaves

Swiss researchers are reporting a major reduction in glacier mass this year, estimating that roughly 5% of the country's glacier ice has melted. Scientists characterize the season's losses as catastrophic and unusually large for a single year. Experts point to a combination of weather factors that amplified melting: an unusually snow-poor winter left glaciers with a thinner protective cover, and a string of record high temperatures across Europe during the summer accelerated surface melt. Together, those conditions produced an 'enormous' net ice loss, according to the researchers. The sharp decline in ice mass this season underscores the sensitivity of alpine glaciers to short-term weather extremes as well as longer-term warming trends. While the scientists' statements highlight the scale of this year's change, they also signal broader concerns about glacier health and the potential consequences for downstream water supplies and mountain ecosystems. Researchers continue to monitor glacier mass balance and climatic conditions to assess ongoing changes. The description of this year as 'catastrophic' reflects the unusually severe combination of low winter snowfall and extreme summer heat that drove the observed losses.