[Blog] WeatherMesh AI DA #153
Description
Arxiv/Blog/Paper Link
https://windbornesystems.com/blog/windborne-ai-da
Detailed Description
AI DA system using the HEALPix grid, separate encoders per sensor, and a three stage updating of single observation to background state at a location, all observations to updated background state at a location, then updated background and observations at all locations.
Uses transformers to communicate from the background state and between observational latent state.
Seems impressive results, although still tied somewhat to the NWP assimilation/forecasts, as it uses the previous 6 hour forecast.