Glaciers in Switzerland, which are among the most prominent in the Alps, experienced a 5.5% reduction in ice volume this year, marking the second-largest decline on record. This decrease was primarily caused by heat waves and insufficient snowfall during the winter, according to experts.
The GLAMOS Swiss glacier monitoring service and Swiss Academy of Sciences stated in a recent announcement that under such conditions, Alpine glaciers have little chance of long-term survival. The situation has deteriorated in recent years, with a nearly 20% decline in ice volume in Switzerland over the past five years alone.
This alarming trend underscores growing concerns about the impact of global warming on Europe, the continent experiencing the most rapid warming worldwide. Matthias Huss, who leads GLAMOS, emphasized that the current warming can be entirely attributed to human-induced climate change and would not occur without human activities and fossil fuel emissions.
The significant ice retreat in Switzerland in 2022 was influenced by a combination of summer heat, diminished winter snow cover, and the deposition of reddish dust from the Sahara, which darkened the glaciers and led to increased heat absorption. Snow cover plays a critical role in protecting the ice from melting and generating new ice for glaciers.
The effects of global warming are not limited to the Alps, as evidenced by the destabilization of a Himalayan slope that collapsed in August, triggering disastrous flooding in Nepal. Satellite observations have also documented extensive glacier shrinkage in regions like Greenland and Antarctica over the past few decades.
While the absolute volume loss in Switzerland this year is lower than in 2003, the percentage decline is more significant due to the considerable reduction in total ice volume compared to 23 years ago. The accelerated ice melt in Switzerland has far-reaching consequences, with the loss of 2.2 trillion liters of water from July to September, equivalent to four times the country’s annual water consumption.
Switzerland, known as the “water tower of Europe,” supplies key rivers such as the Danube, Po, Rhine, and Rhone. The extreme melting witnessed this year led to a decrease in glacier thickness and tongue length in several major glaciers, including Allalin, Clarident, Rhone, and Aletsch, the largest glacier in the Alps.
Experts stress the urgent need to stabilize the climate by reducing CO2 emissions to mitigate further glacier loss. While saving the Swiss Alps glaciers may be nearly impossible, there is still hope for preserving ice in polar regions to limit sea level rise and protect coastal populations.