The average Arctic sea ice extent this September has come in at 4.87 million km sq! Looking back over our statistical forecasts over the last 4 months, we made some good estimates! The observed extent fell into the 1 standard deviation uncertainty of all 4 forecasts - just! 🥳 pic.twitter.com/tnvLeFF2D8

— Will Gregory (@willjgregory_) October 3, 2022