The Digital Earths Lighthouse Activity working group on Data Fusion for climate aims to establish an active community for climate Data Assimilation (DA) and data driven modeling (e.g. Machine Learning/AI methods).
For Climate DA, Digital Earths has co-hosted several workshops, and aims to connect DA efforts with the WWRP. There are also investigations of coupled model spin up and investigations of Machine Learning (ML) based DA.
With ML/AI modeling, Digital Earths is helping maintain a list of Hybrid-AI climate models (https://github.com/tbeucler/HybridESM ), and coordinating with other parts of the WCRP to advance ML/AI hybrid models beyond current ‘weather generators’ which do not know about climate.