Arctic sea ice extent reached its lowest April level since satellite records began in 1979, according to data released Monday by the National Snow and Ice Data Center. The ice covered approximately 5.1 million square miles, roughly 600,000 square miles below the 1981-2010 average for this time of year.
Scientists attribute the record to an exceptionally warm winter across the Arctic, with temperatures averaging 4 to 6 degrees Fahrenheit above normal in key regions. The Barents Sea and Kara Sea were particularly affected, with large areas remaining ice-free well into the typical freeze season.
Researchers warn that the diminished ice cover could have cascading effects on global weather patterns, including potential disruptions to the jet stream that can amplify extreme weather events at lower latitudes. The findings are consistent with long-term projections that the Arctic could experience ice-free summers within the next decade.
