2025-2026 Science Planning Summary
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Alert
Due to a lapse in appropriations, NSF is closed. NSF will continue to accept proposals in accordance with published guidelines. Please continue to watch this site for changes to NSF's operating status, reopening guidance for employees, and if necessary, general instructions for recipients.
 
Additional information: Panelists, Proposers, and Recipients | NSF Employees
 
2025-2026 USAP Field Season
Station and Vessel Schedules

The United States Antarctic Program operates three permanent research stations on the continent and two research vessels.


Opening Dates

  Austral Summer Openings Austral Winter Openings
Operational Science
McMurdo
(Early Season*)
18 Aug 2025 Continuing through Winter/WinFly
5 Sep 2025
17 Mar 2026
McMurdo (Mainbody) 3 Oct 2025 3 Oct 2025
South Pole 1 Nov 2025 1 Nov 2025 14 Feb 2026
Palmer 1 Oct 2024 23 Oct 2024 20 Mar 2025

Estimated Population

Summer Winter
McMurdo 952
(weekly average)
188
(winter total)
South Pole 170
(weekly average)
45
(winter total)
Palmer 44
(weekly average)
20
(winter total)