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Webinar: A Synergy between EUREF and EPOS: GNSS Data Quality Monitoring Service (DQMS)

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EPOS-GNSS 2026 webinar on 11 June, 10:00–11:00 CEST: Fikri Bamahry presents ROB’s GNSS Data Quality Monitoring Service for EUREF stations, including indicators and visualization tools.

International Geological Congress IGC 2028 – First Circular

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CGU joins IGC 2028 in Calgary (Aug 12–20). Submit Geomatics & Geodesy sessions (gravity, GNSS, tectonics, hydrology, sea level) by March 2027 to highlight geodesy’s role in global challenges.

New Website: Discover the Importance of VLBI for Geodesy and Society

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This accessible and visually engaging explainer introduces the fundamentals of Very Long Baseline Interferometry (VLBI) and shows how radio telescopes around the globe measure distances of thousands of kilometres with millimetre precision. It highlights contributions to the International Terrestrial Reference Frame, satellite navigation, and Earth observation, and showcases Australia’s role in global VLBI operations.

Genesis Session at COSPAR – Call for Abstracts

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ESA’s Genesis geodetic satellite, planned for launch in 2029, will strengthen global reference frames. Join the Genesis session (PSD.2) at the COSPAR Scientific Meeting, 01–09 Aug 2026 in Florence, and submit your abstract by 13 February 2026.
REFAG UAW

REFAG2026: Early bird registration deadline – 15 December 2025

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This is a reminder to all colleagues interested in participating in the next IAG Symposium Reference Frames for Applications in Geosciences (REFAG2026), that early bird registration closes on 15 December 2025. The symposium will take place from 2 to 4 March 2026 in Munich, Germany.

Canadian Geophysical Union 2026 Scientific Meeting – Call for Abstracts

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The Canadian Geophysical Union (CGU) announces the opening of abstract submissions for the 2026 Scientific Meeting, to be held May 24–27, 2026, in Halifax, Canada. The Geodesy Section will offer a comprehensive program covering advances in gravity field modelling, geoid and height system modernization, GNSS/GNSS-IR, InSAR, geodynamics, deformation monitoring, satellite missions, and innovations in gravimetry. International contributions from the IAG community are encouraged. Travel support for students and Early Career Researchers is available. The abstract submission deadline is January 10, 2026.

New IAG Publications | Geodesist’s Handbook 2024 & IAG Travaux 2023–2025

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The IAG has released two flagship open-access references: the Geodesist’s Handbook 2024 and the IAG Travaux Report 2023–2025. The Handbook presents IAG statutes, structure, officers, and planned scientific activities, while the Travaux documents scientific and organizational progress across all IAG components. Both volumes provide DOIs for the full work and for each chapter, supporting precise citation and strengthening the international visibility of IAG activities.

16th SIRGAS School: “VLBI and SLR Data Processing”

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The 16th SIRGAS School (San Juan, Argentina | Oct 27–Nov 1, 2025) will train professionals in VLBI and SLR data processing, strengthening geodetic capacities in Latin America through theory and practice at the Félix Aguilar Astronomical Observatory. Join us.

Satellite Laser Ranging – How SLR Powers Geodesy

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Discover Satellite Laser Ranging (SLR) – lasers from ground stations measure satellite and Moon positions with millimeter precision. SLR supports the Terrestrial Reference Frame, tracks Earth rotation, tectonic motion, improves gravity and sea level models, and tests relativity. Explore the science behind these precision measurements in our Geodesy Cartoon.

Geodesy Virtual School 2025 – Summary

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The 2025 Geodesy Virtual School focused on reference frames and Earth system monitoring, held in five free online sessions coordinated from Argentina with support from SIRGAS, IAG, IUGG, and others. It featured 37 instructors and global participation, especially from the Americas. All lectures, in English or Spanish with subtitles, are available online, promoting inclusive, high-quality geodetic training worldwide.