GMAO Contributions Play Key Role in First Public Release of JEDI


Core staff of the Joint Center for Satellite Data Assimilation (JCSDA) working within the GMAO have played a leading role in the development of the Joint Effort for Data assimilation Infrastructure (JEDI), whose first public open-source release was announced on October 29, 2020. JEDI provides a community-based unified infrastructure for data assimilation that harnesses state-of-the-art design practices to build scientific software that is efficient, flexible, and easy to use and share. GMAO is using JEDI to advance the science of data assimilation for GEOS and build a system capable of scaling to ambitious future plans, including strongly coupled data assimilation for the Earth system.

A key component of the newly released JEDI software is the FV3-JEDI interface, which is being assembled at GMAO to connect the generic parts of JEDI to the GEOS model, as well as to other models that use the FV3 dynamical core including NOAA’s Global Forecast System (GFS). Among other functions, FV3-JEDI provides an efficient means of performing data assimilation directly on the GEOS native grid without the need for many costly interpolations or loss of accuarcy. This first public release of JEDI allows users world-wide to download, run, and further develop a basic application of JEDI with both the GEOS and GFS models. Future public releases of JEDI will provide users with the capability to perform end-to-end data assimilation experiments with these and other Earth system models. The GMAO will continue to play an important role in this critical and expanding contribution to Earth system data assimilation for NASA and the nation as a whole.

The JCSDA press release provides more information about JEDI-FV3 1.0.0. To access the JEDI-FV3 code, detailed release notes, self-paced tutorials and more, please visit the JEDI-FV3 Release page.

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