Sea ice data updated daily with one-day lag
On September 11, Arctic sea ice reached its likely minimum extent for 2015. The minimum ice extent was the fourth lowest in the satellite record, and reinforces the long-term downward trend in Arctic ice extent. Sea ice extent will now begin its seasonal increase through autumn and winter. In the Antarctic, sea ice extent is average, a substantial contrast with recent years when Antarctic winter extents reached record high levels. Please note that this is a preliminary announcement. Changing winds or late-season melt could still reduce the Arctic ice extent, as happened in 2005 and 2010. Overview of conditions Figure 1. Credit: National Snow and Ice Data CenterHigh-resolution image On September 11, 2015, sea ice extent dropped to 4.41 million square kilometers (1.70 million square miles), the fourth lowest minimum in the satellite record. The minimum extent was reached four days earlier than the 1981 to 2010 average minimum date of September 15. Conditions in context Figure 2a. Figure 2b.