The "2025 Glacial Isostatic Adjustment Workshop: Advancing Models and Observational Constraints" was held in Sidney, BC, Canada, June 2-6, 2025. The workshop was hosted by Natural Resources Canada and held jointly at the research facilities of the Institute of Ocean Sciences and the Pacific Geoscience Centre. The last such workshop on GIA was held in Ottawa, Canada, in 2019.

The meeting brought together 76 attendees in person, representing 16 countries. An additional 60 participants joined online during the week for a combined attendance of 136 registrants representing 23 countries. The participation of early career researchers benefited greatly from the support of IUGG, IACS, NSF, and SCAR-INSTANT—an impressive 58% of the in-person participants were early career researchers.

 The meeting consisted of oral and poster presentations on topics including Earth rheology, ice sheet evolution and dynamics, modern sea-level change, and geodetic observational techniques. A one-day field trip to local sites offered participants a unique view of the area's geology and geomorphology, including neotectonic and glacial erosional and depositional features. Topical workshops on the final day provided in-depth discussions on issues of high interest to the GIA community. Detailed information on the workshop program, including the abstract book, can be found on the event's website.

 Among the organizers and key contributors were members of the Byrd Polar and Climate Research Center's POLENET research group, further solidifying the program's international impact on polar geophysics.

 Stephanie Konfal Sherman, Senior Research Associate with POLENET, played a pivotal role in the event's success. She was one of four primary organizers of the GIA Workshop and co-convened a thematic session alongside collaborators from three other institutions. 

Konfal Sherman also presented a poster focused on the historical, current, and future state of the ANET-POLENET project, as well as seeking community input on highest-priority sites for continuing GNSS observations in Antarctica.

Research Assistant David Saddler and Professor Terry Wilson, POLENET principal investigator, joined the workshop. Professor Wilson delivered an oral presentation on important new project results developed with graduate student Hongzhi Yao showing that bedrock motions in West Antarctica are accelerating in response to changing ice sheet mass loss in the region. Saddler's poster presentation included an analysis of Antarctic GNSS horizontal and vertical velocities affected by chokering antenna internal icing. He investigated ways to identify and eliminate the signal produced by internal icing in order to provide more accurate GNSS velocities and associated errors to the GIA modeling community.

The 2025 GIA Workshop marked a significant milestone for interdisciplinary cooperation in cryosphere and solid Earth science, with the Byrd Center's team playing an essential role in fostering collaborative research and scientific exchange.

The workshop website includes the full program and a gallery of photos from the event.