EGU22-2070, updated on 23 May 2022
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

An Update on the GGOS Bureau of Networks and Observations

Michael Pearlman1, Dirk Behrend2, Allison Craddock3, Erricos Pavlis4, Jérôme Saunier5, Riccardo Barzaghi6, Elizabeth Bradshaw7, Claudia Carabajal8, Daniela Thaller9, Benjamin Maennel10, Ryan Hippenstiel11, Roland Pail12, Ck Shum13, Nicholas Brown14, Sandra Blevins15, and Laura Sanchez16
Michael Pearlman et al.
  • 1Center for Astrophysics, Radio and Geoastronomy, Cambridge, United States of America (
  • 2NVI, Inc./NASA Goddard Space Flight Center, Greenbelt MD, United States
  • 3Jet Propulsion Laboratory/California Institute of Technology, Pasadena, CA, United States
  • 4University of Maryland, Baltimore MD, United States
  • 5Institut Géographique National, St. Mande, France
  • 6Politecnico di Milano, Milan, Italy
  • 7National Oceanography Centre, Liverpool, United Kingdom
  • 8SSAI, Inc@/NASA Goddard Space Flight Center, Greenbelt MD, United States
  • 9Bundesamt für Kartographie und Geodäsie, Frankfurt, Germany
  • 10GFZ German Research Center for Geosciences, Frankfurt, Germany
  • 11National Geodetic Survey, Silver Spring, MD, United States
  • 12Technische Universität München, Munich, Germany
  • 13The Ohio State University, Columbus, OH, United States
  • 14Geoscience Australia, Canberra, Australia
  • 15NASA Goddard Space Flight Center, Greenbelt MD, United States
  • 16DGFI-TUM, Munich, Germany

The GGOS Bureau of Networks and Observations works with the IAG Services (IVS, ILRS, IGS, IDS, IGFS, IERS, and PSMSL) to advocate for the expansion and modernization of space geodetic networks for the maintenance and improvement of the reference frame and other applications, as well as for the integration of the techniques.  Of particular interest is the integration of gravimetric and tide gauge networks in view of the forthcoming establishment of a new absolute gravity reference frame and of the International Height Reference System/Frame. New sites are being established following the GGOS concept of “core” and co-location sites, and new technologies are being implemented to enhance performance in data yield as well as accuracy. 

The IAG Committees and Joint Working Groups play an essential role in the Bureau activity. The Standing Committee on Performance Simulations and Architectural Trade-offs (PLATO) uses simulation and analysis techniques to project future network capability and to examine trade-off options. The Committee on Data and Information is working on a strategy for a GGOS metadata system for data products and a more comprehensive long-term plan for an all-inclusive system. The Committee on Satellite Missions is working to enhance communication with the space missions, to advocate for missions that support GGOS goals and to enhance ground systems support. The IERS Working Group on Site Survey and Co-location (also participating in the Bureau) is working to enhance standardization in procedures, outreach and to encourage new survey groups to participate and improve procedures to determine systems’ reference points, a crucial aid in the detection of technique-specific systematic errors.

We will give a brief update on the status and projection of the network infrastructure for the next several years, and the progress and plans of the Committees/Working Groups in their critical role in enhancing data product quality and accessibility to the users, scientists and the general community.   


How to cite: Pearlman, M., Behrend, D., Craddock, A., Pavlis, E., Saunier, J., Barzaghi, R., Bradshaw, E., Carabajal, C., Thaller, D., Maennel, B., Hippenstiel, R., Pail, R., Shum, C., Brown, N., Blevins, S., and Sanchez, L.: An Update on the GGOS Bureau of Networks and Observations, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-2070,, 2022.