The National Snow and Ice Data Center (NSIDC) recently made a preliminary announcement that Arctic sea ice on September 16 had melted to about 1.32 million square miles, or just 24 percent of the surface of the Arctic Ocean. This is the lowest seasonal ice coverage since satellite measurements began in 1979. Although ice should start building back up now as the Arctic heads into winter, any newly formed sea ice will be relatively thin and more prone to melting in the coming summer. The Arctic is our planet’s air conditioner, and it plays a key role in regulating global climate. Its cold air and water help drive atmospheric and ocean currents that regulate temperatures worldwide.
NSIDC scientist Julienne Stroeve said, “Recent climate models suggest that ice-free conditions may happen before 2050, though the observed rate of decline remains faster than many of the models are able to capture.” This means the actual melting of sea ice is happening faster than what recent climate models predict and an ice-free Arctic could happen even sooner.