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 […]
We are thrilled to announce the upcoming Summer School on "Satellite-based Hydrological Data Assimilation", specifically designed for early career scientists (MSc, PhD, and Postdoctoral researchers). This exciting event will be hosted by the Geodesy Group at Aalborg University, Denmark, from August 26th to 28th, 2025. Why Attend? Dive into advanced techniques and tackle open challenges in measuring, modeling, […]
Join us at the IAG 2025 Scientific Assembly from 1 to 5 September 2025, in Rimini, Italy. With the theme "Geodesy for a Changing Environment", the conference will explore critical topics in geodesy across the four IAG Commissions: Reference Frames, Gravity Field, Rotation and Geodynamics, and Positioning and Applications. Additionally, the ggos-days-2025 will be held […]
The annual business meeting of GGOS, known as GGOS Days, was integrated in 2025 with the IAG Scientific Assembly 2025. GGOS reports were given during the GGOS-related oral and poster sessions and at the GGOS Governing Board and Science Panel meeting: GGOS Days 2025 | Oral & Poster Sessions Date: September 3-5, 2025 (in-person only) […]
We are pleased to announce that the JIVE VLBI School (JVS 2025) will take place during the week of 15-19 September 2025. The school will be held simultaneously at the […]
An online school on time-variable gravity from GRACE and GRACE-FO satellite missions Satellite gravimetry has become an indispensible tool for studying the earth system. The satellite missions CHAMP, GRACE/GRACE-FO and […]
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 […]
The 2025 GRACE-FO Science Team Meeting will take place from Oct 7-9, 2025, in Boulder, CO (USA), at the University of Colorado, Boulder, in the Village Center! This meeting will be held in hybrid mode (i.e., in-person with live-remote options). Event Category: igfs
Event Category: other
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.
The 10th International VLBI Technology Workshop (IVTW) will take place October 21-25, 2025. The meeting will be hosted by Chalmers University of Technology, Onsala Space Observatory, in Gothenburg, Sweden. The scope of the workshop is to encompass all areas of VLBI hardware and software development and techniques on station updates, frontends, backends, recorders, correlation, image processing, potential […]
The aim of this training school is to prepare for the next generation of VLBI, both in terms of technical development and knowledge transfer between generations of researchers. The new […]
The XVI SIRGAS School will be held in the beautiful city of San Juan, Argentina, with the aim of training professionals in the field of geodesy through the processing of VLBI […]
The IDS is organizing a new edition of the “DORIS Days" designed to offer both a foundational and hands-on experience with DORIS and the IDS community, tailored especially to early-career […]
Dates: November 6 (full day) & 7 (morning), 2025 Local host: Maria Tsakiri (NTUA) Meeting location: National Technical University of Athens, Greece – Patision Campus 28th Oktovriou (Patision) Avenue No 42, 10682 Athens Hybrid meeting Other related event (invitation-only): Governing Board hybrid meeting, Friday November 7 (TBD) More information: https://ids-doris.org/ids/meetings/ids-meetings.html
"Talks on GIA" seminar - Constraining GIA where the mantle is heterogeneous AND Community Priorities for GNSS Measurements We will have two presentations. Erica Lucas (University of California, Santa Cruz, […]
Helio Guerra Neto and Jeff Freymueller from Michigan State University, East Lansing, USA, will present "GIA in the Great Lakes Basin: A Geodetic Perspective on Vertical Motion and Hydrological Loading" Vertical crustal motion in the Great Lakes Basin, North America, results from a combination of ongoing Glacial Isostatic Adjustment (GIA) and environmental and hydrological loadings. […]
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…
Event Category: agu
This online meeting of the IAG GGOS Joint Study Group on AI for GNSS Remote Sensing (open to non-members) brings together researchers and practitioners to discuss recent advances in artificial intelligence and machine learning applied to GNSS-based Earth observation. The program covers AI-driven approaches for atmospheric and ionospheric sensing, tropospheric modeling, uncertainty quantification, and GNSS reflectometry. […]
Mirjam Bilker-Koivula (Finnish Geospatial Research Institute) and Holger Steffen (Lantmäteriet, Sweden), will present "The Whys and Hows of Dealing with Glacial Isostatic Adjustment in a Mapping Authority" Glacial isostatic adjustment (GIA) affects among others vertical datums, sea-level measurements, GNSS heights, and crustal motion models. Hence, it creates technical and practical challenges for mapping agencies. They […]
An event to mark the International Day of Women and Girls in Science on 11 February 2026 the International Science Council (ISC), InterAcademy Partnership (IAP) and Standing Committee for Gender Equality in Science (SCGES) will host a webinar highlighting the role of women in scientific organizations, focusing on leadership, representation and strategies to advance gender […]
We are pleased to invite the GNSS-EPOS community to the inaugural session of our 2026 webinar series, featuring guest speaker Dr. Marianne Métois from the Laboratoire de Géologie de Lyon. Presentation Title: "Tracking very slow deformation of continental Europe with GNSS: challenges and perspectives" Event Details: Date: Monday, 23rd February 2026 Time: 10:00 – 11:00 […]
The Technical University of Munich (TUM) is proud to lead global geodetic research as it currently holds the presidents of Commission 1 “Reference Frames” of the International Association of Geodesy […]
Under the umbrella of the International Association of Geodesy (IAG), the IAG’s Global Geodetic Observing System (GGOS) and the International Earth Rotation and Reference Systems Service (IERS) periodically hold unified analysis workshops to discuss current issues in geodetic data analysis and the determination of geodetic reference frames, as well as the provision of reliable […]
Paul Tregoning (Australian National University, Canberra, Australia), will present "A tool to assess the accuracy of glacial isostatic adjustment predictions of present-day crustal uplift rates" While there are many global and regional glacial isostatic adjustment (GIA) models available that can be used to compute expected present-day uplift rates of the surface of the Earth, they […]
GeodCon-26 is a premier national symposium bringing together researchers, professionals, policymakers, and industry leaders to discuss recent advancements in geodetic science and its applications. The conference highlights innovations in Earth observation, reference frames, satellite and ground-based measurements, and the integration of emerging technologies such as AI and cloud computing. Through expert tutorials, technical sessions, and collaborative workshops, GeodCon-26 aims to strengthen geodetic capacity and position India at the forefront of global geospatial science.
Tracking Mountain Aquifer Storage and Discharge Using Space Geodesy: Using high-precision GNSS surface displacements, this study quantifies groundwater storage changes in the Sierra Nevada and Cascade ranges. Results show long-term depletion due to droughts but rapid recharge during extreme precipitation events, which can restore and sustain groundwater storage and influence regional water supply and ecosystem resilience.
EPOS Days is the flagship annual conference of the European Plate Observing System (EPOS), bringing together researchers, data providers, and infrastructure developers from across Europe to advance collaboration in solid […]
This Technical Workshop aims to bring together operators, users, and manufacturers of superconducting gravimeters to share, collect and transmit knowledge and experiences, providing a forum to discussing instrumental challenges, processing strategies, new developments, and ongoing scientific applications.
IAG collaborates closely with numerous organizations within geodesy and beyond. See the list for details.
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