Abstract: The Joint Effort for Data assimilation Integration (JEDI) — led by the Joint Center for Satellite Data Assimilation (JCSDA) — is an inter-organizational endeavor to develop a common framework for performing data assimilation. This extensive framework will ultimately provide solvers, observation operators, interpolation and model interfaces using object oriented modeling. Two partners involved in JEDI use or plan to use the Finite Volume Cubed-Sphere (FV3) dynamical core to produce weather f…