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IAG Structure Change: Splitting of Commission 4 & new IDEA Representative

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From 2027, the IAG splits Commission 4 into Commission 4 (PNT) and Commission 5 (Atmosphere and Space Weather), and adds a voting IDEA representative to the Executive Committee. Effective July 2027 after the IUGG Assembly.

TIGER Symposium in Geodesy 2026

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The TIGER Symposium in Geodesy 2026 brought together 275 participants worldwide to discuss advances in geodynamics, Earth rotation, and geodetic research, fostering interdisciplinary collaboration and supporting early career scientists.

New GGOS Video: Gravity – The Invisible Force Shaping Our Earth

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Discover how gravity reveals changes in ice, water, sea level and Earth’s interior. The new 8-minute GGOS video explains gravity and its role in geodesy in an accessible way. Available with narration in 11 languages and subtitles in 9 more.
Allison Craddock

IAG Participates in the 16th Session of UN-GGIM

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IAG participated as an observer in the 16th session of UN-GGIM in New York. Its intervention highlighted the need to protect radio frequencies used for geodetic VLBI and reaffirmed IAG’s commitment to strengthening a sustainable, resilient global geodetic infrastructure and the Global Geodetic Reference Frame.

Geodesy for a Resilient Africa Summer School 2026

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This event brought 30 early career scientists from 12 African countries to AIMS Cameroon for hands-on training in geodesy and Earth observation. The programme built practical skills, pan-African collaboration, science-to-policy capacity, and a lasting tide-gauge facility in Limbe for coastal resilience.

Call for Nominations for IAG Officers (2027–2031)

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Call for nominations for IAG Officers for 2027–2031. The IAG community is invited to nominate candidates for the next IAG leadership. Deadline for nominations: 31 October 2026.

In Memoriam: Professor Byron D. Tapley (1933–2026)

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Professor Byron Tapley (1932–2026), pioneer of space geodesy and GRACE Principal Investigator, passed away. He transformed Earth observation and satellite gravimetry. His scientific leadership, mentorship and legacy shaped generations worldwide.

Geodesy Glossary: A Reference Guide to Geodetic Terminology

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A living reference for geodetic terms and abbreviations, linked across IAG website for up-to-date explanations. We are open for updates, corrections, links and contributions from the community.

FIG Congress 2026

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Franck Ghomsi @ FIG Congress 2026   Franck Ghomsi, our early career representative (ECS) of the Inter-Commission Committee on Climate Research (ICCC), attended the recent FIG Congress and represented the IAG ECS group there. FIG is the…

Meet Jorge Martinez – Early Career Scientist

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Jorge Martinez is a Spanish aerospace engineer specializing in orbit determination and planetary science. He analyzes spacecraft data to reconstruct trajectories and study the internal structure and evolution of planets and moons. Currently working at the Royal Observatory of Belgium, he is preparing to pursue a PhD focused on advancing data processing methods and uncertainty estimation in space research.