IAG

International Association of Geodesy

Fostering international geodesy collaboration and innovation

The International Association of Geodesy (IAG) – as a part of the International Union of Geodesy and Geophysics (IUGG) – is a global scientific organization promoting geodesy research and cooperation. Established in 1862, it has evolved from a regional initiative to an international association, emphasizing collaboration in solving geodetic challenges. The IAG’s mission is to advance geodesy through research, data analysis, technological development, and providing accurate representations of Earth and planetary systems. The IAG consists of a variety of organisational components, including scientific, technical, governance, and administrative divisions.

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Commissions

The IAG Commissions address fundamental research in the main areas of geodesy: Reference Frames, Gravity Field, Earth Rotation and Geodynamics, and Positioning and Applications.

ICCs

The Inter-Commission Committees (ICCs) facilitate synergy between the IAG Commissions by addressing interdisciplinary geodetic research topics and cross-cutting scientific challenges.

GGOS

The Global Geodetic Observing System (GGOS) serves as an integrating framework for all IAG components (Services, Commissions, Inter-Commission Committees and Projects) and acts as a hub for geodetic expertise and information, bridging the gap between science and society.

Services

The IAG services facilitate the global co-ordination of activities to collect and analyse geodetic data to the highest standards and to provide geodetic reference frames and other products relevant to geodesists, researchers in other Earth sciences, national administrations and society in general.

Projects

IAG Projects are flagship long-term projects of broad scope and of significant interest for the entire field of geodesy.