Advancements in Data Impact Studies using JEDI and UFS: Insights from the Radio Occultation Modeling Experiment (ROMEX)

This presentation offers a comprehensive update on our ongoing research and development endeavors using the Joint Effort for Data Assimilation Integration (JEDI) and Unified Forecast System (UFS) frameworks for an extensive data impact assessment, the Radio Occultation Modeling Experiment (ROMEX) studies. ROMEX is an international collaborative effort to evaluate the data impacts of radio occultation observations with data volumes greatly exceeding what was available operationally. Our report encompasses several milestones achieved during this study. These included the population of the data into a local JEDI-R2D2 database structure, the setup and configurations of the cycling JEDI-UFS systems. We will detail the inclusion and data selection process, the configuration of the background and observation errors, and the forward operators used in JEDI. Lastly, the presentation will show the initial assimilation results for the ROMEX data impact study.