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GGOS

Global Geodetic Observing System

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Discover GGOS and Geodesy

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.

 
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GGOS Latest News

All 8 /BGI 0 /Com1 0 /Com2 0 /Com3 0 /Com4 0 /Commissions 0 /ECS 0 /GGOS 7 /IAG 0 /ICCC 0 /ICCM 0 /ICCs 0 /ICCT 0 /ICGEM 1 /IDEMS 0 /IDS 0 /IERS 3 /IGETS 2 /IGFS 1 /IGS 0 /ILRS 0 /ISG 0 /IUGG 0 /IVS 1 /Other 0 /Project QuGe 0 /Projects 0 /PSMSL 0 /Services 1 /🌍 Geodesy News 0 /🏛️ Organisation News 0 /📅 Event Update 0 /📰 General News 0

TIGER Symposium in Geodesy 2026 – Extension of abstract and travel support deadline

April 15, 2026/by admin

International Geological Congress IGC 2028 – First Circular

April 8, 2026/by admin

TIGER Symposium in Geodesy 2026 – Abstract deadline approaching

April 1, 2026/by admin

Summer School: Satellite-Based Hydrological Data Assimilation

March 19, 2026/by admin

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

February 24, 2026/by admin

IAG News – New Ways to Stay Connected

February 16, 2026/by Martin Sehnal

Last Call: Join the Geodesy Cartoon Competition Before March 22!

February 12, 2026/by admin

TIGER Symposium in Geodesy 2026 – Abstract submission and registration open

February 4, 2026/by admin
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GGOS Upcoming Events

Geodesy Reception 2025 EGU

IAG Geodesy Reception 2026

5 May | 19:00 - 21:45 CEST
BEV – Federal Office of Metrology and Surveying

IGS Workshop 2026

1 June - 5 JuneInterContinental Hotels Santiago

12 Spanish-Portuguese Assembly of Geodesy & Geophysics

16 June - 19 JuneETSI Topografía, Geodesia y Cartografía

Summer School: satellite-based hydrological data assimilation

25 August - 28 August
Geodesy group, Aalborg University

GGOS Topical Meeting on Geohazards

2 October | 08:00 - 15:00 CEST
Lantmäteriet
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IAG as part of the IUGG

  
The International Association of Geodesy (IAG)  is a constituent association of the International Union of Geodesy and Geophysics (IUGG).

IAG Related Organisations

IAG collaborates closely with numerous organizations within geodesy and beyond. See the list for details.

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