Glaciers in Switzerland, known for hosting the most in the Alps, experienced a 5.5% reduction in ice volume this year, marking the second-largest drop on record. This decline was attributed to heat waves and below-average 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 a bleak future. The situation has deteriorated over the past five years, with Switzerland witnessing a nearly 20% decrease in ice volume during this period.
The report underscores mounting concerns about the impact of global warming on Europe, which is currently the continent experiencing the most rapid warming. Matthias Huss, who leads GLAMOS, emphasized that the current warming is entirely due to human-induced climate change, with no natural factors at play.
The record decline in glacier ice in Switzerland occurred in 2022, exacerbated by summer heat, low snowfall, and the deposition of reddish dust from the Sahara, which darkened the glaciers, causing them to absorb more heat. Snow cover in winter plays a crucial role in protecting the ice from melting and generating new ice, explained Huss, a glaciology professor at the Federal Polytechnic Institute ETHZ.
Beyond Switzerland, global warming has triggered events like the destabilization of a Himalayan slope that collapsed in August, leading to devastating floods in Nepal. Satellite observations have also revealed significant glacier shrinkage in Greenland and Antarctica over the past few decades.
Although the absolute volume loss in Switzerland this year was lower than in 2003, the percentage decline was more pronounced due to the substantial reduction in total ice volume over the years. The impact of accelerated glacier melt in Switzerland is vast, with 2.2 trillion liters lost between July and September alone, equivalent to four times the country’s annual water consumption.
Switzerland’s glaciers not only supply water locally but also feed major European rivers like the Danube, Po, Rhine, and Rhone. The unprecedented melting this year led to a significant reduction in glacier thickness and tongue length, further highlighting the urgency of addressing climate change to preserve these natural ice formations.
Glaciers such as Allalin, Clarident, Rhone, and Aletsch, the largest in the Alps, experienced record melting this year. While stabilizing the climate by reducing CO2 emissions could potentially aid in glacier preservation, Huss noted that saving the Swiss Alps glaciers may be a lost cause. However, urgent action can still make a difference for polar ice sheets, crucial for mitigating sea-level rise and protecting coastal populations worldwide.