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  • China Wuhan

    3rd IAG Commission 4 Symposium: Positioning and Applications

    • Category:
    • Commission 4
    • IGS

    Wuhan, China
    Commission 4

    The 3rd IAG Commission 4 Symposium: Positioning and Applications, will take place from 13 to 15 May, 2025, in Wuhan, China. As a continued Symposium Series of IAG Commission 4, […]

  • Virtual School of Geodesy – Reference Frames, Geodynamics, Atmosphere

    • Category:
    • GGOS
    • Commission 1
    • ECS
    • IERS
    • 📚 Education & Training

    📚 Education & Training

    🎯 Course Objective: The objective of the 2025 School is to provide the most important concepts on the definition, implementation, and maintenance of global, continental, and national reference frameworks, as […]

  • IGS Logo

    Tour de l’IGS 7th Stop: Spotlight on Africa

    • Category:
    • Commission 1
    • IGS

    Commission 1

    This 7th stop focuses on the African continent. Virtual Organising Committee: Fernand Balé (Bureau National d’Etudes Techniques et de Développement, Côte d’Ivoire) and Babatunde Rabiu (National Space Research and Development […]

  • EUREF Reference Frame IAG

    EUREF Symposia 2025 + AC Workshop

    • Category:
    • Commission 1

    University Beira Interior, Covilh Covilh, Portugal
    Commission 1

    The Local and Scientific Organizing Committees are pleased to announce that the next EUREF Symposium will take place from 24 to 26 June 2025, at the University of Beira Interior, […]

  • ESA Living Planet Symposium 2025

    • Sponsorship/Co-Organised:
    • ESA
    • NASA
    • Category:
    • Commission 2
    • 🌐 Other

    ESA's Living Planet Symposium 2025(LPS) - Austria Center Vienna (ACV) Vienna, Austria
    Commission 2

    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 […]

  • GGOS IberAtlantic School 2025

    1st GGOS IberAtlantic Summer School

    • Category:
    • GGOS
    • ECS
    • 📚 Education & Training

    Yebes Observatory Cerro de la Palera, s/n, Yebes, Guadalajara, Spain
    📚 Education & Training

    Location: Yebes Observatory, Cerro de la Palera, s/n, 19141 Yebes, Guadalajara, Spain Organizers: GGOS IA, IGN, Yebes Observatory, RAEGE-Az Sponsors: IGN Spain, RAEGE-Az, ROA Parteners: National Geographic Institute of Spain (IGN […]

  • IAU Symposium 401 2025

    IAU Symposium 401: Advancing Reference Systems, Ephemeris, and Standards

    • Category:
    • 🌐 Other
    • IAU

    La Plata, AR La Plata, Argentina
    🌐 Other

    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 […]

  • Summer School on “Satellite-based Hydrological Data Assimilation”

    • Sponsorship/Co-Organised:
    • DANSk-LSM project
    • Category:
    • ECS
    • Commission 2
    • IGFS
    • 📚 Education & Training

    Aalborg University Aalborg, Denmark
    📚 Education & Training

    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 […]

  • Rimini, Italy IAG Scientific Assembly 2025

    IAG Scientific Assembly 2025

    Featured
    • Category:
    • IAG

    Rimini, IT Rimini, Italy
    IAG

    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 […]

  • VLBI Jive school

    JIVE VLBI School (JVS 2025)

    • Category:
    • IVS
    • ECS
    • 📚 Education & Training

    Joint Institute for VLBI ERIC (JIVE) & University of Pretoria Dwingeloo, Netherlands
    📚 Education & Training

    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 […]

  • GRACE Satellite

    GRACE Hackweek 5

    • Category:
    • ECS
    • Commission 2
    • 📚 Education & Training

    📚 Education & Training

    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 […]

  • Africa Workshop

    South African National Geodesy Workshop

    • Sponsorship/Co-Organised:
    • DLRRD
    • NRF-SARAO
    • SANSA
    • UCT
    • UKZN
    • Category:
    • GGOS
    • UN (United Nations)

    South African Astronomical Observatory (SAAO) Auditorium SAAO, 1 Observatory Rd, Observatory, Cape Town, Cape Town, South Africa
    GGOS

    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 […]

  • GRACE-FO Science Team Meeting 2025

    • Sponsorship/Co-Organised:
    • NASA
    • Category:
    • Commission 2
    • IGFS

    University of Colorado, Boulder Boulder, USA
    Commission 2

    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 […]

  • CODATA

    34th CODATA General Assembly

    • Category:
    • 🌐 Other

    Australia, Brisbane Brisbane, Australia
    🌐 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 […]

  • vlbi göteborg sweden

    10th International VLBI Technology Workshop (IVTW)

    • Category:
    • IVS

    Gothenburg, Sweden Gothenburg, Sweden
    IVS

    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 […]

  • VLBI school Chalmers

    5th IVS Training School on VLBI for Geodesy and Astrometry

    • Category:
    • ECS
    • IVS
    • 📚 Education & Training

    Sweden, Gothenburg Gothenburg, Sweden
    📚 Education & Training

    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 […]

  • XVI SIRGAS School “VLBI and SLR Data Processing”

    • Sponsorship/Co-Organised:
    • IAG; IUGG; IAGA; PAIGH
    • Category:
    • Commission 1
    • 📚 Education & Training

    Facultad de Ingeniería - Universidad Nacional de San Juan Av. Libertador Gral. San Martín 1109, J5400ARL San Juan, Argentina, San Juan, Argentina
    📚 Education & Training

    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 […]

  • Doris Days School 2025

    IDS DORIS School | DORIS Days 2025

    • Sponsorship/Co-Organised:
    • IDS
    • Category:
    • IDS
    • 📚 Education & Training

    National Technical University of Athens, Athens, Greece Zografos Campus, School of Rural Surveying & Geoinformatics Engineering, Labadarion Building 9 Heroon Polytechniou Street, Athens, Greece
    📚 Education & Training

    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 […]

  • IDS meeting

    DORIS Analysis Working Group Meeting

    • Category:
    • IDS

    Athens, Greece Athens, Greece
    IDS

    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 […]

  • “Talks on GIA” seminar

    • Category:
    • Commission 3
    • 📚 Education & Training

    📚 Education & Training

    "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, […]

  • “Talks on GIA” seminar

    • Category:
    • Commission 3

    Commission 3

    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" […]

  • AGU25 – GGOS Session

    • Category:
    • GGOS
    • AGU

    New Orleans, USA New Orleans, United States
    GGOS

      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 […]

  • AGU

    AGU Annual Meeting 2025

    • Category:
    • AGU

    New Orleans, USA New Orleans, United States
    AGU

    Event Category: agu

  • Webinar – AI For GNSS Remote Sensing

    • Category:
    • GGOS

    GGOS

    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 […]

  • “Talks on GIA” seminar 3

    • Category:
    • Commission 3

    Commission 3

    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 […]

  • Women in scientific organizations

    • Category:
    • ECS
    • IUGG

    ECS

    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 […]

  • GNSS-EPOS Webinar, with Dr. Marianne Métois

    • Category:
    • Commission 3

    Commission 3

    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. […]

  • UAW REFAG Munich 2026

    Munich 2026 | REFAG Symposium + Unified Analysis Workshop UAW

    • Category:
    • Commission 1
    • GGOS
    • IAG Services
    • IERS

    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 […]

  • UAW2026: GGOS/IERS Unified Analysis Workshop 2026

    • Category:
    • GGOS
    • IERS

    Munich, Germany Munich, Germany
    GGOS

      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 […]

  • Talks on GIA Seminar

    • Sponsorship/Co-Organised:
    • and PALSEA.
    • SCAR-INSTANT Theme 2
    • Category:
    • Commission 3
    • IACS

    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 […]

  • GeodCon-26

    • Sponsorship/Co-Organised:
    • India
    • Regional Centres for Geodesy
    • Category:
    • IAG

    Indian National Science Academy (INSA), New Delhi New Delhi, India
    IAG

    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 using Space Geodesy

    • Sponsorship/Co-Organised:
    • IAG
    • Category:
    • Commission 3

    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

    • Category:
    • Commission 3
    • IAGA
    • IASPEI
    • IAVCEI
    • IGETS
    • IGS
    • 🌐 Other
    • 📚 Education & Training

    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 […]

  • IGETS SG Technical Workshop

    • Sponsorship/Co-Organised:
    • GWR
    • IGN-SPAIN
    • Category:
    • IGETS

    Yebes Observatory Cerro de la Palera, s/n, Yebes (Guadalajara), Spain
    IGETS

    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 […]

  • Hydrologic Signature in Geodetic Observations

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

    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
    • Category:
    • GGOS
    • Commission 2
    • IGFS

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

    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.

  • 14th IVS General Meeting 2026

    • Sponsorship/Co-Organised:
    • IVS
    • Category:
    • IVS

    Congress House Garmisch-Partenkirchen, Germany
    IVS

    The 14th General Meeting of the International VLBI Service for Geodesy and Astrometry (IVS) is the biennial general assembly of the geodetic/astrometric VLBI community. All IVS Associate Members and individuals […]