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
IAG Structure Change: Splitting of Commission 4 & new IDEA Representative
October 20, 2026/by Martin SehnalTIGER Symposium in Geodesy 2026
October 16, 2026/by Helmut KlimaNew GGOS Video: Gravity – The Invisible Force Shaping Our Earth
October 1, 2026/by Martin SehnalGGOS Africa established as a GGOS Affiliate
September 29, 2026/by Martin SehnalCall for Nominations for IAG Officers (2027–2031)
August 24, 2026/by Martin SehnalJoin Us for GGOS Days 2026 – Registration and Final Programme Now Available
July 31, 2026/by Martin SehnalGeodesy for Safer Societies: Join the GGOS Topical Meeting on Geohazards
July 20, 2026/by Martin SehnalGeodesy in Action: GNSS and InSAR Reveal Coseismic Deformation in Venezuela
July 15, 2026/by Helmut KlimaGGOS Upcoming Events

24th International Workshop on Laser Ranging
1 November - 6 NovemberRectoria de la Universidad Tecnologica Nacional (UTN)
SIRGAS Symposium 2026
3 November - 6 NovemberFaculty of Engineering – University of the Republic.
IAG Geodesy Reception 2027
6 April 2027 | 19:00 - 22:00 CEST
NGGM Science and Applications Workshop 2027
24 May 2027 - 26 May 2027TBD
IUGG General Assembly 2027
16 July 2027 - 22 July 2027Incheon, South KoreaDon’t miss any News, Events or Jobs!
Subscribe to our Mailing Lists.
Become an IAG Member
and enjoy exclusive benefits!
IAG as part of the IUGG

IAG Related Organisations
IAG collaborates closely with numerous organizations within geodesy and beyond. See the list for details.
Sitemap
- Home | geodesy.science
- ⠀└─ 📰News
- ⠀└─ 📅 Events
- ⠀└─ 💼 Jobs
- ⠀└─ 👥 Membership
- ⭐ About Geodesy
- 🏛️ IAG | Int. Association of Geodesy
- ⠀└─ ➡️ Commissions:
- ⠀⠀◻️ 1 – Reference Frames
- ⠀⠀◻️ 2 – Gravity Field
- ⠀⠀◻️ 3 – Earth Rotation & Geodynamics
- ⠀⠀◻️ 4 – Positioning and Applications
- ⠀└─ 🔀 Inter Commission Committees:
- ⠀⠀◻️ ICCT – Theory
- ⠀⠀◻️ ICCM – Marine Research
- ⠀⠀◻️ ICCC – Climate Research
- ⠀└─ ⏰ Project QuGe
- ⠀└─ ⚙️ IAG Services
- 🌎 GGOS | Observing System
- ⠀└─ About GGOS
- ⠀└─ Structure
- ⠀└─ Observations
- ⠀└─ Products
- ⠀└─ Services
References
Contact Us
Follow Us
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.


