Call for Contributions
2025 Sea Ice Outlook June Report
(based on May data)
The Sea Ice Prediction Network (SIPN) invites you to contribute to the June 2025 Sea Ice Outlook (SIO)—a collaborative, community-driven effort to compare and improve seasonal sea ice forecasts.
Submission Deadline: 6:00 p.m. (AKDT) Monday, 16 June 2025 (Firm)
The Sea Ice Outlook (SIO) offers a platform for researchers and forecasters to share predictions of September Arctic sea ice extent and related variables. Following submission of contributions, key visualizations (including pan-Arctic sea ice forecast figures) are published by month on the SIO website. A post-season report focusing on June-September forecast accuracy and performance compared to the observed minimum will be released after the melt season.
For an overview of the 2025 SIO and detailed instructions for contributions, please visit the Call for Contributions online: https://www.arcus.org/sipn/sea-ice-outlook/2025/call
We encourage all past contributors to submit Outlooks for 2025, and we also hope to see new participants. Please feel free to distribute this announcement to others who might be interested in participating in the SIO. Interested first-time contributors should feel free to reach out to the SIO Team with any questions. We look forward to seeing your predictions!
Contact: SIO Team
Email: sio2025 [at] arcus.org
2025 SIO SUBMISSION SCHEDULE
JUNE: (Based on May data)
- 2 June 2025 (Monday): Call for Contributions to June Report
- 16 June 2025 (Monday): Extended Deadline for June Contributions
JULY: (Based on May and June data)
- 1 July 2025 (Tuesday): Call for Contributions to July Report
- 15 July 2025 (Tuesday): Deadline for July Contributions
AUGUST: (Based on May, June, and July data)
- 1 August 2025 (Friday): Call for Contributions to August Report
- 15 August 2025 (Friday): Deadline for August Contributions
SEPTEMBER: (Based on May, June, July, and August data)
- 2 September 2025 (Tuesday): Call for Contributions to September Report
- 15 September 2025 (Monday): Deadline for September Contributions