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  • UAW REFAG Munich 2026

    Munich 2026 | REFAG Symposium + Unified Analysis Workshop UAW


    LDBV - Landesamt für Digitalisierung, Breitband und Vermessung Alexandrastraße 4, Munich, Germany
    Commission 1

    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 (IAG) and the IAG Global Geodetic Observing System (GGOS). In this prominent role, TUM is excited to host two landmark events in 2026: The IAG […]

  • Talks on GIA Seminar

    • Sponsorship/Co-Organised:
    • and PALSEA.
    • SCAR-INSTANT Theme 2

    Commission 3

    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 […]

  • Tracking Mountain Aquifer using Space Geodesy

    • Sponsorship/Co-Organised:
    • IAG

    Commission 3

    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 2026


    Palazzo Doglio hotel conference centre Cagliary, Italy
    📚 Education & Training

    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 Earth science. The event serves as a key forum to discuss the evolution of EPOS as a pan-European research infrastructure and to showcase progress in […]

  • Hydrologic Signature in Geodetic Observations

    • Sponsorship/Co-Organised:
    • Commission 3
    • IAG
    • WG3.1 Hydrologic Signature in Geodetic Observations

    Commission 3

    We announce a seminar by Wenjin Chen on algorithms and software for efficient gravity forward modeling of hydrological mass changes. The talk reviews methods in Cartesian and spherical systems, comparing accuracy and efficiency of modeling approaches, and highlights trade-offs between realism and computation, with applications to hydrological mass change analysis.

  • Postponed PhHS-IHRF2026 – Int. Symposium on Physical Height Systems and the IHRF

    • Sponsorship/Co-Organised:
    • GGOS
    • IAG SC2.2
    • IGFS
    • IHRF CC
    • SC2.4

    General Authority for Survey and Geospatial Information (GEOSA) Riyadh, Kingdom of Saudi Arabia
    Commission 2

    The PhHS-IHRF2026 symposium will be held in Riyadh, Saudi Arabia from 7-9 April 2026. It focuses on observing and interpreting the Earth's gravity field and geoid, emphasizing height systems and the International Height Reference Frame (IHRF). This Joint IAG Symposium is co-organized by IAG Sub-Commissions 2.2 and 2.4, IGFS, and GGOS.

  • International Scientific Conference


    University of Latvia, House of Sciences Jelgavas str. 3, Riga, Latvia
    Commission 2

    This conference explores Earth’s internal and external processes and their interaction with the space environment. It covers crust and mantle dynamics, tectonics, seismicity, and variations in gravitational and magnetic fields, as well as satellite and geodetic methods, fostering interdisciplinary collaboration across geophysics, geology, geodesy, and space sciences.

  • ENC2026 European Navigation Conference

    • Sponsorship/Co-Organised:
    • ENC
    • EUGIN
    • OVN

    Austria Center Vienna Bruno-Kreisky-Platz 1, Vienna, Austria
    Commission 4

    We are pleased to announce the next edition of the European Navigation Conference series, ENC 2026, will take place in Vienna, April 28-30, 2026. The ENC-series is now widely acknowledged as the most important annual event in Europe bringing together the full positioning, navigation and timing community. What you can expect at ENC2026: Technical programme across […]

  • Talks on GIA Seminar

    • Sponsorship/Co-Organised:
    • PALSEA.
    • SCAR-INSTANT Theme 2

    Commission 3

    Allie Coonin (Brown University, Providence, USA) and Tamara Pico (University of California, Santa Cruz, USA) will present: "Transient Earth Rheology Temporarily Slows West Antarctic Ice Retreat in Future Climate Projections" Projections of sea-level change and Antarctic Ice Sheet (AIS) stability under anthropogenic climate change hinge upon accurately describing physical feedbacks that link ice dynamics (marine […]

  • Canceled Hydrologic Signature in Geodetic Observations

    • Sponsorship/Co-Organised:
    • University of Trieste

    Commission 3

    We are pleased to announce our third seminar hosted by the IAG Working Group 3.1. Christian Massari will present on hydrologic variability in Europe and beyond using satellites and in situ sensors. The seminar will be held on May 13; further details and the link will be provided later.

  • EU-wide Community Workshop on Quantum Gravimetry


    GFZ Helmholtz Centre for Geosciences Telegrafenberg, Potsdam, Germany
    Commission 2

    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 […]

  • Talks on GIA Seminar

    • Sponsorship/Co-Organised:
    • PALSEA.
    • SCAR-INSTANT Theme 2

    Commission 3

    Achraf Koulali (Newcastle University, UK) and Matt King (University of Tasmania, Australia) will present: "Sensitivity of Antarctic GPS time series to varying surface mass balance loads, and implications for estimates of Glacial Isostatic Adjustment" Antarctic Global Positioning System (GPS) vertical time series exhibit non-linear signals across a wide range of temporal scales, complicating the interpretation […]

  • EUREF Symposium 2026


    ENSA Paris-Val de Seine 3/15, quai Panhard et Levassore, Paris, France
    Commission 1

    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/  

  • Talks on GIA Seminar

    • Sponsorship/Co-Organised:
    • PALSEA.
    • SCAR-INSTANT Theme 2

    Commission 3

    Here we show that GIA models with realistic 3-D mantle viscosity derived from seismic structures with an effective activation energy of 300–400 kJ/mol and a weak asthenosphere fit paleo-sea level data in North America better than several widely used 1-D GIA models.

  • Summer School: satellite-based hydrological data assimilation

    • Sponsorship/Co-Organised:
    • Aalborg University

    Geodesy group, Aalborg University Rendsburggade 14, Aalborg, Denmark
    📚 Education & Training

    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 […]

  • Workshop on GNSS Ionosphere (IWGI2026)

    • Sponsorship/Co-Organised:
    • IAG

    German Aerospace Center (DLR) Kalkhorstweg 53, Neustrelitz, Germany
    Commission 4

    Welcome to the Workshop on GNSS Ionosphere (IWGI2026) – Remote Sensing Techniques and Applications The “Workshop on GNSS Ionosphere (IWGI2026) – Remote Sensing Techniques and Applications” will take place as in-person format during 31st August – 4th September, 2026 in Neustrelitz, Germany. Participants and speakers will only be able to participate onsite at DLR site Neustrelitz. The […]

  • ITGRF Workshop 2026

    • Sponsorship/Co-Organised:
    • IAG

    Herstmonceux Castle Hailsham, East Sussex, United Kingdom,
    BGI

    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. […]

  • IAG Commission 3 – TIGER Symposium in Geodesy


    Gävle, Sweden Gävle, Sweden
    Commission 3

      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 […]

  • ESA 10th International Colloquium on GNSS

    • Sponsorship/Co-Organised:
    • ESA

    École de technologie supérieure (ETS) of Quebec Montreal, Canada
    Commission 1

    The ESA 10th International Colloquium on GNSS covers topics such as time and frequency principles, positioning and navigation, orbit determination, space navigation, GNSS-enabled science, Earth sciences, fundamental physics, remote sensing, and quantum technologies for PNT. Abstract submission is extended to 8 May 2026; selected papers appear in Advances in Space Research.

  • Geoid Potsdam Kartoffel Potatoe

    Gravity Geoid and Height Systems Symposium (GGHS2026)


    Indian National Science Academy New Delhi, India
    Commission 2

    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 […]

  • 21st Wegener Assembly, Albania

    • Sponsorship/Co-Organised:
    • IAG
    • IASPEI

    Polytechnic University of Tirana “Dëshmorët e Kombit”, Square “Nënë Tereza”, Tirana, Albania
    Commission 3

    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 […]

  • SIRGAS Logo

    SIRGAS Symposium 2026

    • Sponsorship/Co-Organised:
    • IAG
    • IGM UY
    • IGS
    • IUGG
    • UN-GGCE

    Faculty of Engineering - University of the Republic. Av. Julio Herrera y Reissig 565, Montevideo, Uruguay
    IAG

    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 […]

  • 2028 Glacial Isostatic Adjustment Workshop

    • Sponsorship/Co-Organised:
    • SCAR

    TU Dresden Dresden, Germany
    IAG

    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 […]

  • CGU 2028-IGC2028 First Circular


    BMO Centre Calagry, Canada
    📚 Education & Training

    The Canadian Geophysical Union (CGU) 2028 annual meeting will be held in conjunction with the 38th International Geological Congress (IGC) in Calgary, Canada, from August 12–20, 2028. Under the overarching theme "Geosciences for Humanity," this joint event serves as a premier global forum for advancing Earth science research and its societal applications. The CGU program […]