For the 2021 August report, 45 contributions were received that included pan-Arctic predictions. Of those contributions, nine also included predictions for pan-Antarctic, nine included predictions for the Alaska Region, and 15 submitted September mean sea-ice extent anomalies.

This report includes discussions on current conditions in the Arctic; ocean heat conditions; predictions of Arctic sea-ice probability, ice-free dates, ice-advance dates, and initial conditions for those forecasts; Arctic regional sea-ice extent; Arctic sea-ice extent anomalies; and Antarctic contributions.

For the pan-Arctic, the median August Outlook value for September 2021 sea-ice extent is 4.39 million square kilometers, with quartiles of 4.1 and 4.5 million square kilometers. The forecasts continue to support a September 2021 mean sea-ice extent that is above the September 2020 value of 4.00 million square kilometers.

To access the report, go to:

2021 Sea Ice Outlook August Report

For questions, contact:
Betsy Turner-Bogren, ARCUS