Hydrologic Signature in Geodetic Observations
2026-05-13 16:00 (Europe/Rome)
We are pleased to announce our third seminar for our series, hosted by the International Association of Geodesy (IAG) Working Group 3.1: Hydrologic Signature in Geodetic Observations,
Presenter: Christian Massari – Research Institute for Geo-Hydrological Protection, CNR, Italy.
Title: Hydrologic variability in Europe and beyond as observed by satellites and in situ sensors
This seminar will be held on May 13 at 10:00 EDT/ 7:00 PDT/ 16:00 CET/ 23:00 CST.
Further details and the link will be posted at a later time.
Grace Carlson and Carla Braitenberg

EU-wide Community Workshop on Quantum Gravimetry
2026-06-03 - 2026-06-05 | GFZ Helmholtz Centre for Geosciences, Telegrafenberg, Potsdam, Germany
This in-person workshop is organized with the main objective to obtain feedback by the entire European community. Opinions, comments and thoughts on EQUIP-G project activities will contribute to shaping key aspects on the future of (terrestrial) gravimetry. This is centered around the main long-term goal to establish a permanent perennial entity of a shared park of quantum gravimeters in Europe.
The workshop is addressed to all interested and relevant person from EU policymaker to European companies and geophysical service providers and different communities (geodesy, quantum sensing, metrology, geosciences and defense). We want to underline that the focus area is Europe.
Participants will be informed not only about the project structure and goals but about finished, ongoing and planned activities, spanning the entire scope of the project. The workshop involves various formats (presentations, panel discussions, display area, break-out activities and discussions).
Join, be active and enjoy this workshop which is organized for all of us!

Event website and registration: https://events.spacepole.be/event/268/
Project website: https://www.equip-g.eu/

EUREF Symposium 2026
2026-06-23 - 2026-06-25 | ENSA Paris-Val de Seine, 3/15, quai Panhard et Levassore, Paris, 75013, France
EUREF is the International Association of Geodesy (IAG) Reference Frame Sub-Commission for Europe. The EUREF Symposium has been organized since 1990 and the scope of the symposium covers EUREF activities, such as the realisation, maintenance, and usage of ETRS89, EVRS and the EUREF Permanent Network.
More Info – Event Website: https://euref2026.sciencesconf.org/

Summer School: satellite-based hydrological data assimilation
2026-08-25 - 2026-08-28 | Geodesy group, Aalborg University, Rendsburggade 14, Aalborg, 9000, Denmark
Geodesy group of Aalborg University is planning to have a summer school at the Geodesy Group, Aalborg University, August 25-28 2026. The school will be for four days and focusing on training Early Careers to improve their skill of satellite data processing and hydrological data assimilation. The program will be ~50%-50% on theory and practical sessions. The focus will be on advanced techniques and open challenges in measuring and modeling the water cycle, as well as integrating satellite-based observations, including Satellite Gravity (GRACE/GRACE-FO and future missions NGGM/MAGIC), Satellite Altimetry (Sentinel and SWOT), and Soil Remote Sensing into large-scale hydrological models. Participants will be introduced to ensemble-based sequential Data Assimilation techniques for merging satellite data with models. The school emphasises hands-on learning, featuring practical exercises in Python, along with various interactive activities.
The school is free of charge, but a registration process will be followed to select the most relevant audiences. The registration link will be announced soon.

ITGRF Workshop 2026
2026-09-14 12:00 - 2026-09-16 13:00 UTC | Herstmonceux Castle, Hailsham, East Sussex, United Kingdom,
The 2026 ITGRF workshop will provide an excellent opportunity to advance the International Terrestrial Gravity Reference Frame and to discuss current activities within the IAG Joint Working Group 2.1.1. The workshop will focus on ensuring the compatibility of absolute gravity observations, establishing and maintaining gravity reference stations, and developing a modern, user-oriented infrastructure for end-users. It will bring together experts in absolute gravimetry, gravity monitoring, and reference frame realization to exchange knowledge and coordinate future work.
The International Terrestrial Gravity Reference Frame (ITGRF) is developed by the International Association of Geodesy and is based on accurate observations from absolute gravimeters and continuous gravity monitoring at reference stations. Its primary objective is to replace the obsolete International Gravity Reference Standardization Network (IGSN71) defined in the early 1970s with a modern, consistent global gravity reference.
The workshop will be hosted in 2026 by the British Geological Survey’s Space Geodesy Facility at Herstmonceux Castle in East Sussex, a site with a strong scientific heritage as the former home of the Royal Greenwich Observatory.

More info here [PDF]

Booking/registration information is not yet available and will follow soon.

IAG Commission 3 - TIGER Symposium in Geodesy
2026-09-28 - 2026-10-01 | Gävle, Sweden, Gävle, Sweden
We will be hosting three consecutive meetings in Gävle (Sweden) in autumn 2026. Please join us for:

Tracking and Investigating Geodynamics and Earth Rotation – TIGER Symposium in Geodesy (the 1st symposium of the IAG Commission 3 on Earth Rotation and Geodynamics, in cooperation with the Journees meeting series) – September 28th to October 1st, 2026
GGOS Topical Meeting on Geohazards – October 1st and 2nd, 2026
GGOS Days 2026 – October 5th to 7th, 2026

The meetings will be in a hybrid format. More details (e.g., website, registration, abstract submission) will be shared soon. We’re looking forward seeing you in autumn 2026!
Sincerely, Rebekka Steffen (IAG commission 3 president), Laura Sanchez (GGOS President), Martin Sehnal (GGOS Coordinating Office)

Gravity Geoid and Height Systems Symposium (GGHS2026)
2026-10-12 - 2026-10-16 | Indian National Science Academy, New Delhi, India
The Gravity, Geoid and Height Systems Symposium (GGHS) is a leading international meeting organized under the International Association of Geodesy (IAG). It brings together experts, researchers, and students to discuss the latest developments in gravity field modeling, geoid determination, height systems, and their applications in Earth sciences and society.
The next edition, GGHS2026, will continue this tradition by providing a forum for exchanging ideas, presenting new research, and fostering collaboration across the global geodetic community.

The official website with full details will be available soon.

21st Wegener Assembly, Albania
2026-10-13 - 2026-10-15 | Polytechnic University of Tirana, “Dëshmorët e Kombit”, Square “Nënë Tereza”, Tirana, 1001, Albania
The Institute of Geosciences (IGEO) and joint IAG-IASPEI sub-commission “Seismo-geodesy” are delighted to invite you to the 21st WEGENER Assembly, which will take place in Tirana, Albania, from October 13–15, 2026.
WEGENER meetings gather geodesists and geoscientists working in the Mediterranean, earthquake processes and geodynamics. The WEGENER meeting is supported by International Association of Geodesy (IAG) and the International Association of Seismology and Physics of the Earth’s Interior (IASPEI), through Sub-commission 3.5 “Seismo-Geodesy” joint between IAG and IASPEI.
Whether you are an established researcher, an early-career scientist, or a student, Wegener assembly offers a unique opportunity to exchange ideas, develop collaborations, and strengthen our scientific community.
The meeting will be hosted by the Institute of Geosciences part of Polytechnic University of Tirana.
Abstract submission and registration will open February,2 2026. Early-bird registration will be available until July 15, 2026. Proposed sessions are:
1. Motion and deformation of the Mediterranean: from kinematics to dynamics
2. Plate Boundary and Intraplate Processes from Geodetic Observations
3. Faults and Earthquake Cycle Processes
4. Geodesy Contribution to Seismic Hazard Assessment & Mitigation
5. Surface Processes, Hydrology, and Anthropogenic Deformation
6. Emerging Methods and Infrastructures
7. Volcano and Volcano-Tectonic Deformation
Beyond the science, Tirana offers a lively and welcoming atmosphere, with a blend of Ottoman, Italian, and modern architecture, a vibrant café culture, and easy access to Albania’s stunning landscapes from the Adriatic coast to the mountains and historical UNESCO World Heritage sites. Its central location and well-connected airport make it a really accessible and attractive destination for colleagues from all over Europe and beyond.
We warmly invite you to be part of WEGENER 21st Assembly and to contribute to advancing seismo-geodesy research in the Mediterranean and beyond.

SIRGAS Symposium 2026
2026-11-03 - 2026-11-06 | Faculty of Engineering – University of the Republic., Av. Julio Herrera y Reissig 565, Montevideo, 11300, Uruguay
The SIRGAS Biennial Symposium is a leading international forum that brings together geodesists, geophysicists, researchers, and professionals from across the Americas and beyond to discuss advances in geodetic reference systems and Earth observation.
🗓 Frequency & DurationHeld every two years, the Symposium spans four days of scientific exchange, featuring oral presentations, technical sessions, and discussions focused on both theoretical developments and practical applications.
📍 Host CityThe next edition will take place in Montevideo, Uruguay, offering a unique setting that combines scientific excellence with regional collaboration.
🔬 Main Thematic Axes

Applications of the SIRGAS Reference FrameworkPractical and scientific uses of SIRGAS in positioning, mapping, geodynamics, and geospatial infrastructure.
SIRGAS Contributions to Earth System ModellingThe role of SIRGAS in understanding Earth dynamics, including tectonics, sea level, and climate-related processes.
Development and Maintenance of the SIRGAS Reference FrameworkAdvances in GNSS networks, reference frames, standards, and long-term sustainability.
Modelling the Earth’s Gravity FieldGravity field determination, geoid modelling, and their applications in science and engineering.

🌎 Why Attend?The Symposium fosters regional integration, knowledge exchange, and capacity building, strengthening SIRGAS as the geodetic reference for the Americas.
🔗 More information and updates will be available soon on https://sirgas.ipgh.org/

2028 Glacial Isostatic Adjustment Workshop
2028-05-28 - 2028-06-02 | TU Dresden, Dresden, Germany
A workshop focused on glacial isostatic adjustment (GIA), ice sheets, sea-level change, and associated geodetic and geophysical observational constraints will be held in Dresden, Germany, from 28 May to 2 June 2028. This will be a follow-on workshop in a series of similar events. The last GIA Workshop took place in Sidney, BC, Canada, in 2025 (cf. https://polenet.org/2025-gia-workshop/). Detailed information will be published in due time.
