Transitioning the NCEP Production Suite to the Joint Effort for Data assimilation Integration (JEDI)

Currently, the National Centers for Environmental Prediction (NCEP) uses the Gridpoint Statistical Interpolation (GSI) software for generating operational analyses to initialize many modeling applications in the production suite. As part of the transition to the Unified Forecast System (UFS), GSI is slated to be replaced by a Unified Data Assimilation (UDA) framework based on the Joint Effort for Data assimilation Integration (JEDI). Led by the Joint Center for Satellite Data Assimilation (JCSDA), groups from NOAA, NASA, the US Navy and Air Force, and the UK MetOffice all contribute to development and testing of JEDI software. Here we present progress towards not only transitioning existing atmospheric DA functionality to JEDI, but also developing new Earth-system coupled DA capabilities for future NCEP operations. Results from prototype global coupled Earth-system DA using JEDI will be shown. Current progress of JEDI-based atmospheric DA for the Global Data Assimilation System (GDAS) will be shown as well as the future plans towards full implementation of JEDI for GDAS. Additionally, parallel efforts toward transitioning regional, high-resolution modeling systems (Rapid Refresh Forecast System and Hurricane Analysis and Forecasting System) to JEDI will be discussed.