Climate researcher warns Switzerland not prepared for collapse of Atlantic current; implications extend to agriculture and energy supply across Europe.

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Thomas Fröhlicher, a climate researcher at the University of Bern, has issued a grave warning regarding Switzerland's lack of preparedness for the potential collapse of the Atlantic Meridional Overturning Circulation (AMOC), a phenomenon that could lead to severe consequences for agriculture and energy supply across Europe.

The AMOC is crucial for regulating temperatures and weather patterns, and a collapse could mean a drop of up to ten degrees in winter temperatures in northern Europe. Fröhlicher emphasizes the potential for widespread logistical issues, such as disruptions in district heating, as the current system risks faltering.

Fröhlicher notes that the Swiss government's recent climate scenarios fail to address the AMOC collapse as a specific threat, asserting, "We are flying blind as to what this would mean for Swiss agriculture or energy supply." He describes the situation as risky, stating, "It's too risky to bet against it, even if the probability of an imminent collapse is low, the potential damage would be so enormous that the risk cannot be ignored.”

The alarming implications extend beyond Switzerland, as a sustained weakening of the AMOC could alter regional rainfall patterns and reshape the European climate, leading to colder winters and extreme weather. Observations of the North Atlantic “cold blob” indicate that the circulation may already be at its weakest state in more than a thousand years, prompting concerns about global climatic consequences.

Iceland has even declared the potential collapse as an “existential crisis”, emphasizing the urgency of the situation.

Warning on Atlantic current collapse in Switzerland

Key Facts

Switzerland is not prepared for a collapse of the Atlantic current, warns climate researcher Thomas Frölicher from the University of Bern.
A collapse of the Atlantic overturning circulation would probably have a drastic impact on agriculture and infrastructure in Switzerland.
The federal government's new climate scenarios do not include an AMOC collapse as a separate scenario, warns the scientist, stating: "We are flying blind as to what this would mean for Swiss agriculture or energy supply."
A collapse of the AMOC would have "far-reaching consequences" for Europe, including potential changes to heating systems and a possible drop of up to ten degrees in winter temperatures, especially in the north.
Despite the low probability of an imminent collapse, the researcher emphasizes that the potential damage is so enormous that the risk cannot be ignored.
The North Atlantic “cold blob” is associated with the collapse concern, affecting heat distribution and indicating possible system failures in climate regulation.

Context on Atlantic current and climate implications

Key Facts

The Atlantic Meridional Overturning Circulation (AMOC) is weakening and may be approaching a threshold beyond which changes could become abrupt and difficult to reverse.
Freshwater influx into the North Atlantic reduces salinity, making it harder for water to sink, which further weakens the circulation.
A sustained weakening of the AMOC could alter rainfall patterns, affect sea levels, and reshape Europe's climate, potentially leading to colder winters and more extreme weather.
Iceland has raised an unprecedented alarm regarding the potential collapse of the AMOC, describing it as an existential crisis.
Evidence shows a long-term cooling trend in the subpolar Atlantic linked to a weakening AMOC, which poses risks that must be taken seriously.

Climate researcher warns Switzerland not prepared for collapse of Atlantic current; Implications extend to agriculture and energy supply across Europe.

Warning on Atlantic current collapse in Switzerland

Context on Atlantic current and climate implications

Source Citations

Climate researcher warns Switzerland not prepared for collapse of Atlantic current; Implications extend to agriculture and energy supply across Europe.

Warning on Atlantic current collapse in Switzerland

Context on Atlantic current and climate implications

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Source Citations