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Highlights:
- AMOC collapse could lead to significantly colder winters in Europe and global weather disruptions.
- Recent studies show AMOC is at its weakest in nearly 1,000 years, with a high risk of collapse by 2095.
- Climate scientists urge urgent cuts to greenhouse gas emissions to prevent this potential disaster.
Scientists have issued a stark warning about the potential collapse of the Atlantic meridional overturning circulation (AMOC), a key component of the Gulf Stream that helps regulate temperatures in Europe and beyond. Researchers caution that this collapse could happen sooner than previously thought, leading to devastating consequences for agriculture, energy demand, and weather patterns across the UK and Europe.
The collapse of the AMOC would result in much harsher winters in Europe, with temperatures dropping between 5ºC and 10ºC. In addition, the equatorial regions would experience warmer temperatures, and rainfall patterns would become more volatile. A recent study from Utrecht University in the Netherlands highlighted that AMOC is now at its weakest in nearly a millennium and may come to a complete halt within the century, a scenario that could have irreversible global effects.
An open letter signed by 40 leading climate scientists, addressed to the Nordic Council of Ministers, urged leaders to take the risk more seriously and press international partners to adhere to the 2015 Paris Agreement’s climate targets. The letter warns that while the Intergovernmental Panel on Climate Change (IPCC) has expressed medium confidence that AMOC will not collapse abruptly before 2100, this is far from reassuring, given more recent studies suggesting an increasing likelihood of collapse.
Research from the University of Copenhagen last year predicted a 95% chance that the AMOC could stop between 2025 and 2095, while Utrecht’s simulation forecasted that such an event would have catastrophic consequences, especially for Nordic countries. The scientists are calling for immediate and aggressive cuts in greenhouse gas emissions to prevent this disaster.
The UK's Office for Budget Responsibility (OBR) has acknowledged the collapse of the AMOC as a key uncertainty in forecasting economic risks. The OBR stated that changes in weather patterns linked to AMOC could significantly affect the UK's climate, resulting in more extreme weather events, ranging from cooler winters to increased storm activity.
The scientists emphasize that stopping greenhouse gas emissions is essential to avoiding this tipping point and protecting the planet from drastic climate changes.
