Glaciers in Switzerland, which are the most abundant in the Alps, experienced a 5.5% reduction in ice volume this year, marking the second-largest drop on record. This decline was primarily attributed to heat waves and low snowfall during the winter, according to experts. The GLAMOS Swiss glacier monitoring service and Swiss Academy of Sciences expressed concerns about the sustainability of Alpine glaciers under such conditions.
Recent years have seen a worsening trend, with a nearly 20% decrease in ice volume in Switzerland over the past five years alone. This report underscores the growing impact of global warming on Europe, the continent experiencing the fastest rate of warming worldwide.
Matthias Huss, who leads GLAMOS, emphasized that the current warming is directly linked to human-induced climate change, stating that without human emissions and fossil fuels, the warming would not be occurring.
In 2022, Switzerland witnessed a significant retreat of glacier ice due to a combination of factors including summer heat, reduced winter snowfall, and the deposition of reddish dust from the Sahara. Snow cover in winter plays a crucial role in protecting the ice from melting and providing essential nourishment for glacier growth, as explained by Huss.
The effects of global warming are not limited to Switzerland, as it contributed to the destabilization of a Himalayan slope leading to a catastrophic collapse and flooding in Nepal. Satellite observations have also revealed substantial glacier shrinkage in Greenland and Antarctica over the past decades.
While the absolute volume loss in Swiss glaciers this year is lower than in 2003, the percentage decline is greater due to the overall reduction in ice volume compared to 23 years ago. The accelerated melting in Switzerland has resulted in the loss of 2.2 trillion liters of water from July to September, equivalent to four times the country’s annual water consumption.
The impact of glacier melt extends beyond Switzerland, as the country serves as a vital water source for Europe, feeding major rivers such as the Danube, Po, Rhine, and Rhone. The most affected glaciers in Switzerland this year included Allalin, Clarident, Rhone, and Aletsch, the largest glacier in the Alps.
Huss stressed the urgent need to stabilize the climate by reducing CO2 emissions to support glacier preservation efforts. While saving the Swiss Alps glaciers may be a challenging task, there is still hope to make a difference in polar regions to mitigate sea-level rise and its potential threats to coastal regions.