A digital twin of Earth for the green transition

Nature Climate Change, Published online: 01 February 2021; doi:10.1038/s41558-021-00986-y

For its green transition, the EU plans to fund the development of digital twins of Earth. For these twins to be more than big data atlases, they must create a qualitatively new Earth system simulation and observation capability using a methodological framework responsible for exceptional advances in numerical weather prediction.