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To benefit society and science

The new geodetic Earth observatory built by the Norwegian Mapping Authority (NMA) in Ny-Ålesund, 79 degrees north, was successfully inaugurated 6 June.

"Today we have reached a significant milestone which will benefit society and science and bring global Earth observations to a higher level, said Lars Jacob Hiim, State Secretary to the Norwegian Minister of Local Government and Modernisation, in his opening remarks to more than 150 guests. For more information, please click here!

Strengthening the role of geodesy: the new United Nations Subcommittee on Geodesy was inaugurated in Mexico City

"The new subcommittee is now established and this is an important step for improving global geodesy. We must work for the benefit of all member states," says Alexey Trifonov, who is the newly elected co-chair from the Russian Federation.
The inaugural meeting for the Subcommittee on Geodesy was convened on November 26th and 27th, and was hosted by INEGI in Mexico City in the margins of the 2017 UN-GGIM High Level Forum. 19 Member States and organisations participated in the meeting.
Australia's Gary Johnston is continuing as co-chair for the next year, while Norway's Laila Løvhøiden is stepping down. For more information, please click here!

NASA, Norway to Develop Arctic Laser-Ranging Station

NASA and the Norwegian Mapping Authority are partnering to develop a state-of-the-art satellite laser ranging station 650 miles from the North Pole that will produce high-precision locations of orbiting satellites, help track changes in the ice sheets and improve the efficiency of marine transportation and agriculture. For more information, please click here!

Inauguration of the Onsala Twin Telescopes

The Onsala Space Observatory, Chalmers University of Technology, and the International VLBI Service for Geodesy and Astrometry (IVS) are proud to announce the ceremonial inauguration of a new pair of Twin Telescopes for geodetic and astrometric VLBI. For more information, please click here!

Description of the Global Geodetic Reference Frame

The United Nations General Assembly adopted the resolution on a Global Geodetic Reference Frame for Sustainable Development (A/RES/69/266) on February 26, 2015. The purpose of this document is a description of the Global Geodetic Reference Frame (GGRF), along with a brief description of its key components, as a realization of the Global Geodetic Reference System (GGRS).

This document forms the basis for a common understanding of the GGRF. It has been prepared by the International Association of Geodesy (IAG), the organization responsible for the science of geodesy. It thus outlines the IAG’s perspective of what the GGRF is, and how it is realized through the contributions of the IAG components. For more information, please click here!

Milestone for global geodesy

The UN calls for enhanced cooperation on global geodesy. At the UN-GGIM sixth session in New York in August, the UN Committee of Experts on Global Geospatial Information Management endorsed the GGRF Roadmap and decided to establish a permanent Sub-Committee on Geodesy. Photo: Anne Jørgensen For more information, please click here!

UN General Assembly urges sharing of geospatial data to benefit people and planet

The science that supports the precise pinpointing of people and places should be shared more widely, according to the United Nations General Assembly as it adopted its first resolution recognizing the importance of a globally-coordinated approach to geodesy – the discipline focused on accurately measuring the shape, rotation and gravitational field of planet Earth. For more information, please click here!

Welcome to the International Association of Geodesy

The International Association of Geodesy (IAG) is a scientific organization in the field of geodesy. It promotes scientific cooperation and research in geodesy on a global scale and contributes to it through its various research bodies. It is an active association of the International Union of Geodesy and Geophysics (IUGG).
The IAG has a long and distinguished history that goes back to 1862, the year, in which the "Mitteleuropäische Gradmessung" was established. This organization was formed to promote scientific work in geodesy in Central Europe, following a proposal made a year earlier by J.J. Baeyer (1861). In 1867, the name of the organization was changed to "Europäische Gradmessung", because by then countries from all of Europe had joined the organization. In 1886, the name was changed to "Internationale Erdmessung", emphasizing the need for international cooperation to solve the scientific tasks of geodesy. The French and English translations of this name resulted in the current name "International Association of Geodesy (IAG)". Thus, the IAG as an international scientific organization goes back to 1886 and is one of the oldest international organizations of this kind.


The Mission of the Association is the advancement ofgeodesy. The IAG implements its mission byfurthering geodetic theory through research andteaching, by collecting, analyzing, modelling andinterpreting observational data, by stimulating technological development and by providing a consistent representation of the figure, rotation, and gravity field ofthe Earth and planets, and their temporal variations.

  • New Guidelines for Manuscript Submission to the Journal of Geodesy
  • Report of the EUREF Symposium 2018
  • Strengthening the role of geodesy: the new United Nations Subcommittee on Geodesy was inaugurated in Mexico City

  • Current date: July 19, 2019

    2019-07-28- 2019-08-02
    AOGS 16th Annual Meeting

    2019-08-12- 2019-08-13
    Earth & Geo Science-2019

    2019-09-09- 2019-09-13
    First International School on“Geoid Modelling, Gravity Inversion and its Applications”
    Gaevle, Sweden

    2019-11-04- 2019-11-08
    4th Symposium of the Committee on Space Research (COSPAR)
    Herzliya, Israel

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