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News and Activities

GGOS IberAtlantic (GGOS IA) functions as a regional node of GGOS, focusing on geodetic activities across the Iberian Peninsula and the Atlantic region. GGOS IA fosters collaboration among geodetic institutions while promoting scientific research and technological development tailored to the region’s unique geophysical characteristics.

GGOS Newsletter – New Design

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© GGOS

The GGOS newsletter launched along with the redesigned GGOS website in December 2019 and we now have a total of 55 people (January 2022) subscribed to receive news from GGOS. Previously, when a new post was published on the GGOS blog, a new newsletter was sent to all subscribers. But this and the design of the GGOS newsletter will now change.

The new GGOS newsletter will be sent out at the beginning of each month (starting in February 2022) and contains the full content of the last NEWS article as well as a summary of two other articles. In addition, the next GGOS EVENTS and other events can be found in the lower section.  Furthermore the design of the new GGOS newsletter has been improved and modernized.

The GGOS Coordination Office has set up the GGOS Newsletter and is responsible for its content. If you would like to see your content related to GGOS, the IAG and geodesy in general or you have further ideas, please contact us.

If you have not yet subscribed for the GGOS Newsletter, you can do this here …

Tour de l’IGS

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Tour de l'IGS

The third stop will provide GNSS users (even without a geodetic background) an overview on the value by applying IGS products for their activities. It focuses on GNSS processing based on IGS products focusing on geometric applications, e.g., coordinate estimation. You will be provided with information on

  • how to process and get ITRF coordinates for regional or local applications
  • which aspects of GNSS data analysis are relevant in this context
  • value of geodesy to other scientific/user applications

(IGS Scientific Organizing Committee for this event: Rolf Dach and Arturo Villiger, AIUB)

17:00 – 17:10: Introduction and instructions to participants | Allison Craddock, on behalf of the Central Bureau

17:10 – 17:25: Observation equation and analysis strategies | Rolf Dach (AIUB, IGS Analysis Center Representative)

17:25 – 17:30: Questions for Rolf, Transition to Next Speaker

17:30 – 17:45: Overview on available IGS products | Tom Herring (MIT, IGS Analysis Center Coordinator) 

17:45 – 17:50: Questions for Tom, Transition to Next Speaker

17:50 – 18:05: Processing a regional/continental dataset | Sonia Costa (SIRGAS)

18:05 – 18:10: Questions for Sonia, Transition to Next Speaker

18:10 – 18:25: Antenna calibrations | Arturo Villiger (AIUB, IGS Antenna Working Group Chair)

18:25 – 18:30: Questions for Arturo

18:30 – 18:40: 10 minute break

18:40 – 18:55: Clock parameters | Michael Coleman (US NRL, IGS Clock Products Coordinator) | Urs Hugentobler (Technical University of Munich)

18:55 – 19:00: Questions for Michael and Urs, Transition to Next Speaker

19:00 – 19:15: Bias and ambiguity resolution | Stefan Schaer (swisstopo, Bias & Calibration Working Group Chair)

19:15 – 19:20: Questions for Stefan, Transition to Next Speaker

19:20 – 19:35: Troposphere modelling | Johannes Böhm (Technische Universität Wien, IGS Associate Member)

19:35 – 19:40: Questions for Johannes

19:40 – 20:00: Open discussion and final remarks

For more information, please visit: https://www.igs.org/tour-de-ligs/

Author: Sz. Rózsa

GGOS Session at EGU 2022

EGU

During the next EGU 2022 General Assembly, GGOS will have its own session about Geodesy for Science and Society. This session welcomes contributions on general GGOS topics, particularly those related to scientific and social aspects of GGOS applications. If you want to contribute to this session, please upload your abstract until the abstract submission deadline on January 12.

Don’t miss it and upload your abstact!

The Global Geodetic Observing System (GGOS) provides measurements of the time varying gravity, rotation, and shape of the Earth using space and terrestrial geodetic techniques. These measurements must be accurate to better than a part per billion in order to advance our understanding of the underlying processes responsible for temporal changes in the Earth’s
rotation, gravity, and shape. Demanding applications of geodesy include mass transport in the global water cycle, sea level
and climate change, and crustal deformation associated with geohazards. All these measurements require a common reference with the same precision, like the Terrestrial Reference Frame and the Unified Height System. GGOS is designed to unite the individual observations and model into one consistent frame with the highest precision available to be realized as
Global Geodetic Reference Frame (GGRF).