GGOS monitors global changes through geodesy
The Global Geodetic Observing System (GGOS) of the International Association of Geodesy (IAG) provides the essential framework for accurate measurements and consistent modelling and interpretation of Earth system processes and interactions, including global change, Earth deformation, and mass exchange between and within the geosphere, biosphere, cryosphere, hydrosphere and atmosphere. GGOS provides a framework of geodetic observation infrastructure and expertise to analyze observational data and produce geodetic products that serve science and society.
GGOS Latest News
Highlights from 1st GGOS IberAtlantic Summer School
September 19, 2025/by adminIGS Workshop 2026
September 11, 2025/by adminIDS DORIS School | DORIS Days 2025
September 10, 2025/by admin16th SIRGAS School: “VLBI and SLR Data Processing”
September 9, 2025/by adminGeodesy Cartoon Competition
August 30, 2025/by adminSatellite Laser Ranging – How SLR Powers Geodesy
August 26, 2025/by adminSouth African National Geodesy Workshop
August 25, 2025/by adminCall for IAG proposals – IUGG Support Program of Scientific Meetings in 2026
August 21, 2025/by adminGGOS Upcoming Events

AGU25 – GGOS Session
15 December - 19 DecemberNew Orleans, USA
Munich 2026 | REFAG Symposium + Unified Analysis Workshop UAW
2 March 2026 - 6 March 2026LDBV – Landesamt für Digitalisierung, Breitband und Vermessung
IAG Geodesy Reception 2026
4 May 2026 - 7 May 2026BEV – Federal Office of Metrology and Surveying
IGS Workshop 2026
1 June 2026 - 5 June 2026InterContinental Hotels Santiago
GGOS Days 2026 + GGOS Topical Meeting on Geohazards
1 October 2026 - 7 October 2026Gävle, SwedenDon’t miss any News, Events or Jobs!
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IAG as part of the IUGG


IAG Related Organisations
IAG collaborates closely with numerous organizations within geodesy and beyond. See the list for details.
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References
This website is provided by the IAG Secretariat and the GGOS Coordinating Office, which are hosted by the BEV – Federal Office of Metrology and Surveying (Bundesamt für Eich- und Vermessungswesen) in Vienna, Austria.
Website Language Translation
The primary language of this website is English – however, the integrated GTranslate tool enables automatic translation into several languages:
Please note that translations into other languages may not be accurate. For reliable information, refer to the English version of the website.