The once- serene Swiss Alps are now bearing the brunt of climate change, with glaciers facing a "dramatic" melt at an alarming rate. As a critical milestone looms, all of last winter's accumulated snow and ice is anticipated to have disappeared by Monday, marking what experts describe as the second-earliest 'glacier loss day' on record.
The accelerated melting, driven by factors including the ongoing European heatwave, a warm May, and preceding winter with significantly less snowfall, has left scientists sounding the alarm. Matthias Huss, head of Glacier Monitoring in Switzerland (Glamos), notes that he recently observed a metre of vertical ice melt on the Rhone Glacier within just ten days – a stark reminder of the heatwave's impact.
This year's situation mirrors 2022, which holds the record for the most extreme melt rates in the Alps. Glaciers received 25% less snow replenishment this winter compared to the 2010-2020 average, and warm temperatures in May led to an earlier disappearance of the snowpack. Huss also points to the arrival of Saharan dust in March as a contributing factor, darkening the snow and increasing heat absorption.
The long-term trend for Swiss glaciers is stark – they began retreating approximately 170 years ago, with the rate of melting accelerating significantly in recent decades due to a warming climate. Between 2000 and 2024, the total volume of Swiss glaciers has decreased by 38%. Over the past 50 years, Switzerland has lost 1,200 smaller glaciers, leaving only 1,300 remaining. Experts warn that if current warming trends continue, only small remnants of ice will be left by 2100.
The extensive melting has far-reaching implications beyond Switzerland's borders. The Alpine glaciers are a crucial source of water for two of Europe's major rivers, the Rhine and the Rhone. As glacier volume continues to dwindle, water availability downstream could be affected, impacting ecosystems, agriculture, and hydroelectric power generation across the continent.