Glaciers in Switzerland, known for hosting the most glaciers in the Alps, experienced a 5.5% decline in ice volume this year, marking the second-largest drop on record. This decrease was primarily attributed to heat waves and low snowfall during the winter as reported by experts.
The GLAMOS Swiss glacier monitoring service and Swiss Academy of Sciences highlighted the grim outlook for Alpine glaciers under such conditions, stating that they have minimal chances of long-term survival. The trend of ice loss in Switzerland has been deteriorating, with a nearly 20% decline in ice volume over the past five years.
Experts emphasized the severe impact of global warming on Europe, noting that the current warming can be entirely linked to human-induced climate change. Matthias Huss, who leads GLAMOS, emphasized the critical role of anthropogenic climate change in the ongoing warming trend.
In 2022, Switzerland witnessed a significant retreat of glacier ice due to a combination of summer heat, reduced winter snowfall, and the deposition of reddish dust from the Sahara, which darkened the glaciers and led to increased heat absorption. The importance of winter snow cover in preserving glacier ice was highlighted by Huss, who explained its role in preventing ice melt and providing new ice formation.
The effects of global warming on glaciers are not limited to the Alps; recent incidents, such as the collapse of a Himalayan slope in August, resulting in devastating flooding in Nepal, underscore the broader impact of climate change. Similar shrinkage of glaciers has been observed in regions like Greenland and Antarctica over the past few decades.
Although the absolute volume loss in Swiss glaciers this year is lower than in 2003, the percentage decline is more significant due to the substantial reduction in total ice volume compared to 23 years ago. The accelerated melting in Switzerland has led to the loss of an estimated 2.2 trillion liters of water from July to September, equivalent to four times the country’s annual water consumption.
Switzerland’s glaciers play a crucial role as a water source for Europe, feeding important rivers like the Danube, Po, Rhine, and Rhone. The extreme melting experienced by Swiss glaciers this year has resulted in a decline in average glacier thickness and significant reductions in glacier tongues.
Glaciers such as Allalin, Clarident, Rhone, and Aletsch, the largest in the Alps, witnessed record melting this year. Huss stressed the urgent need to reduce CO2 emissions to stabilize the climate and protect glaciers, noting that immediate action is required to prevent further ice loss in the Swiss Alps.
While the situation for Alpine glaciers appears dire, Huss expressed optimism about the potential to make a difference in polar regions by limiting sea level rise, a critical threat to coastal populations worldwide.