geodesy.science - IAG website

AGU Fall Meeting 2023 - GGOS Session
2023-12-14 - 2023-12-15
The AGU Fall Meeting 2023 will be held in San Francisco, USA, from December 11-15. This year GGOS has following combined session with IGS:
Serving Global Geodesy: Innovations Enabled by the IGS and IAG-GGOS (G41C & G44A)
Session description: “The International GNSS Service (IGS) provides a broad range of high-precision openly available products supporting a diverse array of GNSS-based scientific applications. Currently the legacy product chains include three out of the four meanwhile fully deployed global constellations, namely GPS, GLONASS, and Galileo. Developments to including additional global and regional systems (BeiDou, QZSS, NavIC, etc.) are ongoing within the IGS. Advances in IGS product development may stimulate new multi-GNSS based scientific applications in a wide range of potential applications from geodetic, geodynamic towards glaciology, global environmental change, disaster and tsunami early warning, up to space weather and atmospheric science. At the same time, the continuous improvement of GNSS-based products is a scientific challenge regarding constantly evolving satellites, systems, signals, related models, and data analysis methodology. This session solicits presentations on scientific applications enabled by IGS products as well as new strategies to improve the quality and breadth of GNSS products.”
G41C Poster session – Thursday, 14 December 2023: https://agu.confex.com/agu/fm23/meetingapp.cgi/Session/208765
G44A Oral session – Friday, 15 December 2023: https://agu.confex.com/agu/fm23/meetingapp.cgi/Session/211275

IGNSS 2024
2024-02-07 - 2024-02-09 | UNSW Sydney, Sydney, Australia
Celebrating 50 years of GNSS: Navigating the next 50

It is a great pleasure to invite you to attend the 2024 IGNSS Conference taking place at UNSW Sydney on 7 – 9 February 2024.

IGNSS2024 will open the next 50-year chapter of PNT, by bringing together experts, policy makers and emerging leaders in GNSS technology, products, and services to examine the latest advances, present cutting edge research and discuss policy, market development and infrastructure.
IGNSS2024 will also showcase the Southern Positioning Augmentation Network (SouthPAN) and other important developments by Governments in the region. There will of course also be updates from the major GNSS System Providers.

More information: https://www.ignss.org.au/ignss2024

Recent Achievements and Future Perspectives in GeodesyColloquium in honor of Prof. Harald Schuh
2024-02-21 - 2024-02-22 | Potsdam, DE, Potsdam, Germany

Recent Achievements and Future Perspectives in Geodesy - Scientific Colloquium
2024-02-21 13:30 - 2024-02-22 13:00 UTC | GFZ Potsdam, Telegrafenberg, Potsdam, 14473, Germany
At the end of 2023, Prof. Harald Schuh will retire as Director of the Geodesy Department at the GFZ. For this reason, the GFZ has decided to organize and host a scientific colloquium on “Recent Achievements and Future Perspectives in Geodesy” to which everyone is cordially invited.
During this colloquium, several scientific presentations will be given on various topics of geodesy. Most of the speakers are former doctoral and post-doctoral students of Harald Schuh who now hold professorships.
During the social dinner on the first evening, there will also be time for meeting your colleagues and networking with good friends.
Participation is free of charge; however, registration is mandatory by January 31, 2024.
Lecture Program
Registration for free (until January 31, 2024)

Short Course on GNSS-IR for Water Level Measurements
2024-03-06 - 2024-03-07 | Online, DE, Online, Germany

EGU General Assembly 2024
2024-04-14 - 2024-04-19 | Vienna, AT, Vienna, Austria

ION Pacific PNT Conference
2024-04-15 - 2024-04-18 | Honolulu, Hawaii, US, Honolulu, Hawaii, United States

EGU General Assembly 2024 - GGOS Session
2024-04-15 14:00 - 2024-04-16 18:00 (Europe/Helsinki)
The EGU General Assembly 2024 will be held as usual in Vienna, Austria, on April 15-19 2024.
The GGOS session is done this year together with the IVS:
G2.3 Global Geodetic Observing System: The Reference for Earth System Monitoring and featuring VLBI component

Oral session: Monday, April 15: 14:00-15:45 (CEST) – room G2
Virtual Poster Session: Tuesday, April 16: 14:00-15:45 (CEST)
Poster Session: Tuesday, April 16: 16:15-18:00 (CEST)

GGOS Splinter Meetings
In addition GGOS has 3 splinter meetings on Sunday April 14: the

GGOS Governing Board (GB) [GB members only], the
GGOS Bureau of Products and Standards (BPS), and the
GGOS Bureau of networks and Observations (BNO) meeting.

Everyone is invited to participate in the GGOS Bureau meetings (BPS & BNO). More information and registration here: ggos-governing-board-bureaus-meetings

Geodesy Reception 2024
2024-04-17 19:00 - 22:00 (Europe/Helsinki) | BEV – Schiffamtsgasse 1-3, 1020 Vienna, Schiffamtsgasse 1-3, Vienna, 1020, Austria
The Geodesy Reception will take place this year at the main building of the BEV (Federal Office of Metrology and Surveying) and is sponsored by the IAG (International Association of Geodesy) and the EGU Geodesy Division.

Date: Wednesday, April 17, 2024

Time: 19:00-22:00
Venue: BEV – Federal Office of Metrology and Surveying
Address: Schiffamtsgasse 1-3, 1020 Vienna – 8th floor

We are sorry. All available places are taken. The names of registered persons will be checked at the entrance.

Unregister: If you are unable to attend, we kindly ask you to unregister via the link above. You can also unregister by using the provided link in the confirmation email or contact.

FIG Working Week
2024-05-19 - 2024-05-24 | Accra, GH, Accra, Ghana

18th Symposium of SEDI
2024-06-23 - 2024-06-28 | Great Barrington, MA, US, Great Barrington, MA, United States

45th COSPAR Scientific Assembly
2024-07-13 - 2024-07-21 | Busan, KR, Busan, Korea, Republic of

32th IAU General Assembly
2024-08-06 - 2024-08-15 | Cape Town, ZA, Cape Town, South Africa

9th International Colloqium on Scientific and Fundamental Aspects of GNSS
2024-09-25 - 2024-09-27 | Wroclaw, PL, Wroclaw, Poland

Africa Rising: Shaping Our Common Future Through Geodesy
2024-09-27 08:30 - 15:00 (America/Halifax) | CURE, New York, 345 Park Avenue South, New York, NY, 10010, United States
We invite you (in-person or online) to join us for an amazing meeting on Geodesy in Africa at the Science Summit for the UN Sustainable Development Goals.
In addressing global challenges like climate change, urbanization, and sustainable resource management, accurate geodetic data is crucial. We aim to elevate the global geodesy supply chain, align geodetic science with policymaking, and advance research through multidisciplinary cooperation.
Central to our agenda is integrating the African perspective to address unique challenges and contributions. This meeting focuses on advancing UN Resolution 69/22, “A Global Geodetic Reference Frame (#GGRF) for Sustainable Development,” fostering discussions among Member States, international organizations, and geospatial experts. One of the key topics to be discussed the 1st Joint Development Plan for Global Geodesy, aiming to accelerate progress towards the UN Sustainable Development Goals.
Find more at https://sciencesummitunga.com/science-summit-unga79/

GGOS Topical Meeting on the Atmosphere
2024-10-07 - 2024-10-09 | Wissenschaftetage im Bildugsforum – Potsdam, Germany, Am Kanal 47, Potsdam, 14467, Germany
Topics Meeting Logistics Dates Registration Abstract Submission Travel Award
GGOS serves as an integrating framework for all components of the International Association of Geodesy (IAG), providing a clearinghouse for geodetic expertise and fostering interdisciplinary research. A current challenging topic is the modelling of spatio-temporal variations of the atmosphere (troposphere, stratosphere, mesosphere, thermosphere, ionosphere/plasmasphere) and the magnetosphere using geodetic and geophysical observations. Several colleagues are making great progress in this field, and therefore, GGOS is convening this meeting to bring together all these colleagues to share common research points and to identify new topics for study. The scope of the meeting also includes the participation of colleagues from the International Association of Geomagnetism and Aeronomy (IAGA), with the main objective of establishing a multidisciplinary network of scientists to integrate geodetic and geophysical technologies for comprehensive monitoring of the atmosphere and categorise existing and potential new related applications that contribute to the dissemination and societal use of research results in this important field. Please click on the following link for more details about the meeting:

Programme – Agenda [PDF]
Abstract Booklet [PDF]
Detailed Meeting Description [PDF]
Meeting Report [PDF]
List of Participants [PDF]
Presentation Slides & Posters [Zenodo]
Photos: Topical Meeting and Guided Tour at GFZ

Group photo of the GGOS Topical meeting participants (October 7, 2024)

Meeting Logistics
The meeting was held over three days (October 7-9), please see the agenda. In the two days following the GGOS Topical Meeting (October 10-11), the ggos-days-2024 took take place at the same location – ggos-days-2024.
Joint Dinner
A joint conference dinner was organized on Monday, 7 October starting at 18:30.
Guided Tour GFZ

Our host institute, the GFZ Potsdam, offered a guided tour at the Telegrafenberg on Wednesday, 9 October from 16:30-18:00.

Important Dates

– July 15: Travel Award application deadline
– July 31 August 15: Abstract submission deadline
– August 31 26: Pre-registration deadline
– August 15 September 5: Abstract acceptance notification
– August 31 September 5: Schedule and conference program
– September 5: Confirmation of participants
– September 18 – Dinner & Guided Tour Registration Deadline
– October 6: Presentation Upload
– October 7-9: GGOS Topical Meeting
– October 10-11: ggos-days-2024 (seperate registration necessary)

Participation and Pre-Registration
The meeting took place in-person only (online participation is not possible). Attendance is free (no registration fee), but pre-registration is required until August 26 to ensure room capacity.

Abstract Submission
Abstract submission ended on August 15!

Travel awards for early career scientists and colleagues from developing countries
Thanks to the support of IUGG, IAGA and IAG, we were able to provide some financial support to early career scientists and colleagues from developing countries to present their research at the meeting.

Meeting Support
This meeting is supported by

– International Union of Geodesy and Geophysics (IUGG),
– International Association of Geomagnetism and Aeronomy (IAGA),
– International Association of Geodesy (IAG),
– Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences,
– Deutsches Geodätisches Forschungsinstitut (DGFI-TUM) der Technischen Universität München
– Federal Office of Metrology and Surveying, Austria (BEV)

Contact
If you have any further questions or require more information, please contact the GGOS Coordinating Office: contact

GRACE/GRACE-FO Science Team Meeting 2024
2024-10-08 - 2024-10-10 | Potsdam, DE, Potsdam, Germany

AGU24 Annual Meeting
2024-12-09 - 2024-12-13 | Washington D.C., 801 Mt. Vernon Place NW, Washington, DC, United States
The next annual meeting of the American Geoscience Union – AGU24 – will be held this year in Washington, D.C. on 9-13 December 2024. More info: agu.org/annual-meeting
GGOS Session

We would like to draw your attention to our GGOS session G007:
Geodetic Standards for Improved Accurate and Consistent Earth Observation Products from the Global Geodetic Observing System Techniques
GGOS Session Description:
Ensuring up-to-date geodetic standards is essential for analyzing observational data and delivering accurate and consistent products interoperable in both geodetic and other earth sciences. Several organizations are interested and cooperate on achieving new and improved standards: so, GGOS is developing the upcoming international height reference framework, IAU/IUGG/IAG have resolutions recent and underway, and IERS is updating its 2010 Conventions.
We invite discussions of revisions to standards like status of the update of fundamental constants and models for tides, geopotential and Earth rotation, and topics including but not limited to main geodetic techniques such as VLBI, GNSS, SLR, LLR, DORIS, altimetry, and gravimetry, as well as their co-location in ground and space, infrastructure improvement, or RFI protection. The session also welcomes discussions on geodetic data bases and products, their better exploitation, or meeting societal needs through timely applications to, e.g., geohazards monitoring, geodetic space weather research or artificial intelligence for geodesy.

EGU General Assembly 2025
2025-04-27 - 2025-05-02 | Vienna, Austria, Vienna, Austria
Event Category: egu

IAG Geodesy Reception 2025
2025-04-29 19:00 - 22:00 (Europe/Helsinki) | BEV – Federal Offie of Metrology and Surveying, Schiffamtsgasse 1-3, Vienna, 1020, Austria
Details:
The Geodesy Reception 2025 will take place at:

Date: Tuesday, April 29, 2025
Time: 19:00-22:00
Venue: BEV – Federal Office of Metrology and Surveying
Address: Schiffamtsgasse 1-3, 1020 Vienna – 8th floor

Sponsors:

IAG (International Association of Geodesy)
EGU Geodesy Division
BEV (Federal Office of Metrology and Surveying)
GGOS (Global Geodetic Observing System)

Registration Required:
Since the number of participants is limited (120 persons) and this event is highly attended, registration is required to join. The attendance list will be checked at the entrance of the BEV building.
Please register here if you would like to attend the Geodesy Reception 2025:

Confirmation Email: All registrants will receive an email notification immediately after registration. If you do not receive one, please contact as soon as possible. A successful registration is required to attend this event.
Unregister: If you are unable to attend, we kindly ask you to unregister by using the provided link in the confirmation email or contact.

EGU General Assembly 2025 - GGOS
2025-04-30 | Austria Center Vienna, Vienna, Austria
The EGU General Assembly 2025 brings together geoscientists from all over the world to one meeting covering all disciplines of the Earth, planetary, and space sciences. The EGU aims to provide a forum where scientists, especially early career researchers, can present their work and discuss their ideas with experts in all fields of geoscience.
EGU session G2.3 “GGOS: Fostering collaboration in geodesy to address challenges for science and society“:
This session will focus on the critical role of geodesy in supporting Earth observation, environmental monitoring and sustainable development efforts worldwide. In particular, it will provide a framework to highlight challenges and achievements of international and multidisciplinary cooperation focused on the generation and sharing of standardised and consistent geodetic data and products, the identification of emerging scientific and societal needs that can be addressed by geodetic services and products, and the enhancement of the visibility of geodesy by improving the accessibility of geodetic observations, information and products to the widest range of users.
Please see the session description at: https://meetingorganizer.copernicus.org/EGU25/session/51945
GGOS Oral Session: Wed, 30 Apr, 14:00-15:45 (CEST), room 0.96/97
GGOS Poster Session: Wed, 30 Apr, 10:45-12:30 (CEST)
GGOS Governing Board Meeting: Sat, 26 April (invitation only)

2025 Glacial Isostatic Adjustment workshop: Advancing Models and Observational Constraints
2025-06-02 - 2025-06-06 | Sidney, CA, Sidney, Canada
We are excited to announce that registration for the “2025 Glacial Isostatic Adjustment workshop: Advancing Models and Observational Constraints” taking place on June 2nd to 6th, 2025, in Sidney (British Columbia, Canada) & online, is now open.
To register, please visit our website at https://polenet.org/2025-gia-workshop-registration/.
Please note that space is limited by the physical capacity of the workshop venue. Depending on the level of interest, it may be necessary to cap in-person registration. If needed, priority will be given to individuals with accepted abstracts and invited speakers, with the remaining in-person registration seats offered on a first come, first served basis. A notification will be posted on the workshop website (https://polenet.org/2025-gia-workshop/) if all in-person spaces have been filled. Registration deadline is April 11th, 2025, for in-person attendees. Virtual attendance is free of charge and there is no limit on the number of attendees.
The schedule and detailed programme will be published on the workshop website soon.
If you have any questions, please feel free to reach out to Karen Simon (karen.simon@nrcan-rncan.gc.ca).

ESA Living Planet Symposium 2025
2025-06-25 | ESA’s Living Planet Symposium 2025(LPS) – Austria Center Vienna (ACV), Vienna, Austria
ESA-NASA Joint session C.02.05 “MAGIC – Preparing for the ESA-NASA satellite gravity constellation”.
25/06/2025, Part 1, 14:00 – 15:30, Room 0.94/0.95
25/06/2025, Part 2, 16:15 – 17:45, Room 0.94/0.95
A.10.02 “Geodetic satellite missions and their applications”
25/06/2025, Part 1, 8:30 – 10:00, Hall E1
25/06/2025, Part 2, 8:30 – 13:00, Hall E1

IAU Symposium 401: Advancing Reference Systems, Ephemeris, and Standards
2025-08-04 - 2025-08-09 | La Plata, AR, La Plata, Argentina
﻿It is our pleasure to announce that the International Astronomical Union (IAU) Symposium
“Advancing Reference Systems, Ephemeris, and Standards: from the Earth and the Moon
to Solar System Bodies” (IAUS 401) will be held from August 4 to 9, 2025, at the National
University of La Plata (UNLP), La Plata (Argentina).
Reference systems and their standardization are of paramount importance to many fields
of astronomy. Some examples are the reduction of ground-based observations, space
astrometry, astrophysics missions, and space missions to solar system planetary bodies
and beyond. The concept of a reference system and its realization requires the
convergence of reference frames, ephemeris, and time scales to be developed respecting
associated standards, thus fulfilling one of the IAU strategic goals as the provider of
astronomical standards and their use.
The IAUS 401 will provide a forum to discuss the latest results and prospects in these
fields and thus facilitate the coordination of common standards across agencies and
organizations.
The IAUS 401 is structured in six key topics:
1.- Earth rotation models and Earth Orientation Parameters (EOP)
2.- Celestial and terrestrial reference systems/frames
3.- Reference systems/frames for the Moon and other solar system bodies
4.- Time scales and time metrology
5.- Ephemerides of solar system objects
6.- Astronomical standards
The IAUS 401 registration, abstract submission, and IAU travel grant applications are
already open. The symposium will be in a hybrid format to welcome in-person and online
participation.
For additional information and contact details, please refer to IAUS 401 website:
https://iaus401.fcaglp.unlp.edu.ar/
We are looking forward to seeing you in La Plata!
Sincerely,
Alberto Escapa and Laura I. Fernández,
On behalf of the SOC and the LOC

15th Session of the UN Committee of Experts on Global Geospatial Information Management (UN-GGIM)
2025-08-06 - 2025-08-08 | UN New York, New York City, USA

South African National Geodesy Workshop
2025-10-01 - 2025-10-02 | South African Astronomical Observatory (SAAO) Auditorium, SAAO, 1 Observatory Rd, Observatory, Cape Town, Cape Town, 7925, South Africa
Towards a National Geodesy Working Group for South Africa
Geodesy — the science of measuring the Earth’s shape, orientation, gravity field, and changes over time — is the foundation of modern mapping, positioning, land administration, infrastructure, and climate monitoring.
South Africa has a proud history in terrestrial and space geodesy, from early triangulation networks to today’s NRF Space Geodesy facilities, TrigNet GNSS stations, tide gauges, and participation in global collaborations. Yet, our efforts remain fragmented across institutions, with limited coordination.
In 2015, the United Nations adopted Resolution A/RES/69/266 on the Global Geodetic Reference Frame for Sustainable Development (GGRF), calling on all countries to strengthen geodetic infrastructure, skills, and governance. South Africa must respond by aligning nationally and globally.
To this end, a National Geodesy Workshop will be convened to:

Bring together key stakeholders in geodesy.
Strengthen coordination of infrastructure, data, services, and skills.
Align with the UN-GGRF agenda.
Establish a National Geodesy Working Group as a formal coordination mechanism.

This is an exciting step towards ensuring that South Africa continues to play a leading role in geodesy, contributing both to national development and the global community.

The Arab Conference on Astronomy and Geophysics (ACAG 9)
2025-10-13 - 2025-10-16 | Cairo, Egypt, Cairo, Egypt
Event Category: other

34th CODATA General Assembly
2025-10-17 - 2025-10-18 | Australia, Brisbane, Brisbane, Australia
The 34th CODATA General Assembly will take place on 17-18 October 2025 in Brisbane, Australia, and online. See the letter from CODATA President convening the General Assembly on the dates following the International Data Week 2025.

AGU25 - GGOS Session
2025-12-15 - 2025-12-19 | New Orleans, USA, New Orleans, United States
The AGU Annual Meeting 2025 brings together geoscientists from all over the world to one meeting covering all disciplines of the Earth, planetary, and space sciences.
GGOS is planning to have it’s own session. More information will follow…

AGU Annual Meeting 2025
2025-12-15 - 2025-12-19 | New Orleans, USA, New Orleans, United States
Event Category: agu
