Arctic sea ice hits record lows amid AMOC stability concerns

Arctic sea ice reached one of its lowest recorded levels on September 12, 2026, covering 4.6 million km2. Data from NASA and the National Snow and Ice Data Center indicate this minimum ties with the 10th lowest levels recorded in 2008, 2010, and 2025. Scientists note a shift in ice composition, as thick multi-year ice is increasingly replaced by thinner, more vulnerable first-year ice.

Simultaneously, scientific debate continues regarding the stability of the Atlantic Meridional Overturning Circulation (AMOC), which includes the Gulf Stream. Research from the University of Utrecht suggests a tipping point could be reached at approximately two degrees Celsius of warming, rather than the previously estimated four degrees.

Other studies, including research from Inria, indicate that under average emission scenarios, the AMOC could lose roughly 51 percent of its strength by 2100. While some oceanographers caution against media alarmism, measurements from the University of Miami show a decline in deep Atlantic currents over nearly two decades, and Iceland has classified a potential collapse as a national security threat.