The Joint Center for Satellite Data Assimilation (JCSDA) is pleased to announce the release of JEDI 2026.1, a major, coordinated update. The update includes over 1,500 pull requests merged since the last release, spanning 9 model applications and 89 observing instruments. It shows significant development across all six core repositories, including substantial new capabilities, performance improvements, and scientific advances:
- OOPS (framework and solvers)
- UFO (observation operators)
- CRTM (radiative transfer)
- IODA (observation data)
- SABER (background error covariances)
- VADER (variable transforms)
Model applications for atmospheric, ocean, sea-ice, land, aerosol, and composition components were all updated, with a new ionospheric DA application extending JEDI's reach into space weather for the first time.
We gratefully acknowledge the JCSDA partner agencies and institutions whose contributions shaped this release: NOAA, NASA, USAF, USN, the Met Office, ECMWF, NCAR/UCAR, NRL, and Met Norway, among others.
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Boreas Penguin
UCAR Chief Penguin
UCAR, UCP and NSF NCAR
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