Development on Movable Nest in FV3GFS

FV3GFS was initially developed in NOAA’s Geophysical Fluid Dynamics Laboratory (GFDL) and National Centers for Environmental Prediction (NCEP) under the auspices of the Next-Generation Global Prediction Project. It uses GFDL non-hydrostatic Finite-Volume Cubed-Sphere Dynamical Core (FV3) coupled to physical parameterizations from the NCEP’s Global Forecast System (GFS). The model was adopted as the next-generation Uniform Forecast System in NCEP. According to the uniform modeling Strategic Implementation Plan (SIP), we expanded the dynamics and nesting capabilities for hurricane analysis and forecast applications in FV3GFS. In this talk, we present our scientific rationale for the movable nesting approach and summarize how we implement the nesting approach in FV3GFS. We also update significant milestones we achieved so far and future directions in this development.