Arctic Portal news

The August report for the 2018 Sea Ice Outlook (SIO) is now available online.

For the August report, 39 contributions were received that include pan-Arctic predictions. Of those contributions, 10 also included pan-Antarctic predictions and 11 included predictions for Alaskan waters.

For the Arctic, the median August Outlook value for a September 2018 sea ice extent projection is 4.6 million square kilometers.

The August report includes an overview of projections of total September Arctic ice extent; a section about predicted spatial fields with discussion on sea ice probability (SIP) and the first ice-free day (IFD) from a number of dynamical models; a section on current conditions and atmospheric conditions; a section discussing regional sea ice conditions; and a section discussing Antarctic sea ice extent forecasts.

The August report is the product of the Sea Ice Prediction Network–Phase 2 (SIPN2) effort. The goal of the previous SIPN1 was to enhance scientific discussion on the physics that control summer sea ice extents. In SIPN2 there is a further analysis of quantitatively comparing model forecast output.

The full report is available on the Sea Ice Prediction Network website.

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