Digital Twin Earth

Digital Twin Earth refers to a dynamic, high-resolution digital representation of the Earth system that integrates observational data, physical models, and simulation capabilities to monitor and predict natural and anthropogenic processes. It combines satellite observations, in situ measurements, and numerical modeling within interoperable data infrastructures.

In geodesy, Digital Twin Earth initiatives rely on precise geodetic observations to provide the geometric and physical reference framework of the planet. GNSS, VLBI, SLR, satellite gravimetry, and altimetry contribute essential information on Earth’s shape, gravity field, rotation, sea level, and mass redistribution. Geodesy ensures the spatial and temporal consistency required for integrating multi-source Earth system data into reliable digital twin environments.