G – Geodesy

Programme Group Chair: Roelof Rietbroek

G1 –  Geodetic Theory and Algorithms

Proposals are marked in red.

Session short summary:
This session explores AI-enabled SAR and InSAR methods for scalable ground-motion monitoring, from amplitude and interferometric processing to time-series interpretation, forecasting, uncertainty-aware alerts, and decision support. We welcome advances and operational applications in subsidence, landslides, infrastructure, mining, volcanoes, earthquakes, and related hazards.
Keywords: Artificial Intelligence, Image processing, InSAR (Interferometric Synthetic Aperture Radar), Risk/hazard scenarios modeling and forecasting, Satellite time series
Co-organization suggestions:
NH6 | Remote Sensing, AI, data science & Hazards
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Session short summary:
This session provides a broad forum for theoretical and methodological advances in geodesy. We welcome contributions on classical and emerging topics, including reference frames, gravity fields, geodynamics, positioning, and geoid determination. Presentations may explore analytical, numerical, or data-processing methods, alongside practice-oriented services and ties to other disciplines.
Keywords: Earth rotation, Earth's gravity field, Geodetic reference frames (International Terrestrial Reference Frame / ITRF), Geoid, Gravity field modelling
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G2 –  Reference Frames and Geodetic Observing Systems

Proposals are marked in red.

Session short summary:
This session is a forum for discussing advances in high-precision GNSS algorithm development and their applications in geosciences, such as geodesy, geodynamics, seismology, tsunamis, ionosphere and troposphere sounding, and related fields.
Keywords: Early warning systems, Global Navigation Satellite Systems (GNSS), Remote sensing - atmosphere, Seismic monitoring
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Session short summary:
This session aims to cover the latest progress in the computation, evaluation and use of global Terrestrial Reference Frames (TRFs): from improvements in space geodetic data analyses, and in the combination of space geodetic techniques with local ties and “space ties”, to the exploitation of different TRF solutions for various geodetic and geophysical applications.
Keywords: Geodetic reference frames (International Terrestrial Reference Frame / ITRF), Global Navigation Satellite Systems (GNSS)
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G3 –  Geodynamics and Earth Fluids

Proposals are marked in red.

Session short summary:
This session is the melting pot for studies touching the wide-impact GIA process. We welcome advances in modelling and observing GIA, investigations on its effect in climate, hazard and ecosystem studies, and international efforts in providing FAIR databases of GIA model output and observations.
Keywords: Cryosphere, Glacial Isostatic Adjustment (GIA / Postglacial rebound), Mantle structure, Rheology, Sea level
Co-organization suggestions:
CL0 | Inter- and Transdisciplinary Sessions
CR7 | The Cryosphere in the Earth system: interdisciplinary topics
GD4 | Geodynamics across the Earth System: Surface Processes, Climate, Life and Feedbacks 
GM9 | Glacial, Periglacial, and Cold Regions Geomorphology
NP2 | Dynamical Systems Approaches to Problems in the Geosciences
OS2 | Coastal Oceans, Semi-enclosed and Marginal Seas
TS4 | Tectonics and its Interaction with Surface Processes and the Biosphere
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G4 –  Satellite Gravimetry, Gravity and Magnetic Field Modeling

G5 –  Geodetic Monitoring of the Atmosphere

Proposals are marked in red.

Session short summary:
This session is is dedicated to highlight advancements and new opportunities for remote sensing of the Earth system. It is a forum where discussing the use of geodetic observation to sense atmospheric water vapor in the troposphere for different applications, ranging from climate to now-casting, and the use of reflected signals for environmental monitoring.
Keywords: Atmospheric water vapour, Global Navigation Satellite Systems (GNSS), InSAR (Interferometric Synthetic Aperture Radar), Soil moisture, Weather extreme events
Co-organization suggestions:
AS | Atmospheric Sciences
CL | Climate: Past, Present & Future
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G6 –  General Sessions

G7 –  Co-organized Sessions and Short Courses