The European Union’s ten-year initiative, Destination Earth, involves the creation of a digital twin of earth.
The highly accurate digital model of earth will map climate development and extreme events as accurately as possible in space and time. Observational data will be continuously incorporated into the digital twin to predict possible future trajectories. Information available from the earth’s twin will be used to:

https://www.amcouncil.com.au/news/56-member-news/100097-digital-twin-for-earth.html

  • Continuously monitor the health of the planet, including state of the oceans and the effect of climate change.
  • Perform dynamic and realistic simulations of the earth’s natural systems.
  • Improve modelling and predictive capacities to help plan measures in the event of hurricanes and other extreme events and natural disasters[1].

Destination Earth will use a cloud-based modelling and simulation platform, providing access to data, advanced computing infrastructure software, AI applications and analytics. It is planned to originally public authorities with avenues to open to scientific and industrial users, to spur innovation and enable benchmarking of models and data[2].
In addition to the critical data on climate development and effective solutions, researchers also seek to include new data that highlights human activities in the world and our impact on food, water and energy management[3].

[1] Sourced: https://ec.europa.eu/digital-single-market/en/destination-earth-destine 
[1] Sourced: https://ec.europa.eu/digital-single-market/en/destination-earth-destine 
[1] Sourced: https://www.weforum.org/agenda/2021/03/scientists-are-developing-a-digital-twin-of-our-earth-to-fight-climate-change