International Association of Geodesy

(Redirected from International GNSS Service) Constituent scientific organization

International Association of Geodesy

Predecessor	European Arc Measurement (German: Europäische Gradmessung)
Formation	1886; 138 years ago (1886)
Type	scholarly society
Purpose	advancement of geodesy
Headquarters	Masala, Kirkkonummi, Finland
Region	worldwide
Parent organization	International Union of Geodesy and Geophysics
Website	www.iag-aig.org
Formerly called	International Geodetic Association

The International Association of Geodesy (IAG) is a constituent association of the International Union of Geodesy and Geophysics focusing on the science which measures and describes the Earth's shape, its rotation and gravity field.

History

The precursors to the IAG were arc measurement campaigns. The IAG was founded in 1862 as the Mitteleuropäische Gradmessung (Central European Arc Measurement), later became the Europäische Gradmessung (European Arc Measurement) in 1867, the Internationale Erdmessung (Association Geodésique Internationale in French and "International Geodetic Association" in English) in 1886, and took its present name in 1946.

Overview

At present there are 4 commissions and one inter-commission committee:

Reference Frames
Gravity Field
Geodynamics and Earth Rotation
Positioning & Applications
Inter-commission Committee on Theory

International Services

The twelve IAG Services are split into three general topic areas: geodesy (IERS, IDS, IGS, ILRS, and IVS), gravity (IGFS, ICGEM, IDEMS, ISG, IGETS and BGI) and sea level (PSMSL).

International Gravimetric Bureau (French: Bureau Gravimétrique International) (BGI)
International Center for Global Earth Models (ICGEM)
International Digital Elevation Model Service (IDEMS)
International DORIS Service (IDS)
International Earth Rotation and Reference Systems Service (IERS)
International Geodynamics and Earth Tide Service (IGETS)
International Gravity Field Service (IGFS)
International GNSS Service (IGS)
International Laser Ranging Service (ILRS)
International VLBI Service for Geodesy and Astrometry (IVS)
International Service for the Geoid (ISG)
Permanent Service for Mean Sea Level (PSMSL)

The Global Geodetic Observing System (GGOS) is the observing arm of the IAG that focuses on proving the geodetic infrastructure to measure changes in the earth's shape, rotation and mass distribution.

The International GNSS Service (IGS), part of GGOS, archives and processes GNSS data from around the world. IGS data is used in the 2021 reference frame (G2139) of WGS84.

Journal

IAG sponsors the Journal of Geodesy, published by Springer.

Awards

The IAG's awards for outstanding achievement in geodesy include the Guy Bomford Prize (inaugurated in 1975), the Levallois Medal (inaugurated in 1979), and the IAG Young Author's Award (inaugurated in 1993).

References

Torge, Wolfgang (2015). "From a Regional Project to an International Organization: The "Baeyer-Helmert-Era" of the International Association of Geodesy 1862–1916". IAG 150 Years. International Association of Geodesy Symposia. Vol. 143. Springer, Cham. pp. 3–18. doi:10.1007/1345_2015_42. ISBN 978-3-319-24603-1.
Soler, T. (1997-02-01). "A profile of General Carlos Ibáñez e Ibáñez de Ibero: first president of the International Geodetic Association". Journal of Geodesy. 71 (3): 176–188. Bibcode:1997JGeod..71..176S. doi:10.1007/s001900050086. ISSN 1432-1394. S2CID 119447198.
Plag, H.-P.; Pearlman, M. (2009). Global geodetic observing system meeting the requirements of a global society on a changing planet in 2020. Berlin: Springer. pp. 1–13. ISBN 978-3-642-02687-4.
"GGOS - Global Geodetic Observing System - About". 176.28.21.212. IUGG. Archived from the original on 4 August 2020. Retrieved 30 June 2018.
Johnston, Gary; Riddell, Anna; Hausler, Grant (2017). "The International GNSS Service". Springer Handbook of Global Navigation Satellite Systems. pp. 967–982. doi:10.1007/978-3-319-42928-1_33. ISBN 978-3-319-42926-7.
"(U) Recent Update to WGS 84 Reference Frame and NGA Transition to IGS ANTEX" (PDF). Retrieved 2023-01-15.
Kusche, Jurgen. "New Guidelines for Manuscript Submission to the Journal of Geodesy". IAG Homepage. IAG.
^ Drewes, H.; Adám, J.; Poutanen, M. (2016). "The International Association of Geodesy–Historical overview" (PDF). Journal of Geodesy. 90: 913–920. (See Tables 9, 10, & 11.)
"Guy Bomford Prize". Awards, IAG.
"Levallois Medal". Awards, IAG.
"IAG Young Author's Award". Awards, IAG.