Coupling techniques in the new high resolution SHiELD + MOM6 model for extreme weather prediction

We present a new model that couples GFDL’s FV3-based weather model SHiELD, GFDL’s ocean model MOM6, and NCEP’s wave model WAVEWATCH III. This model is specifically designed for high-resolution simulations of air-sea interactions during extreme coastal weather events. It aims to address the critical need for accurate representation of fine-scale processes in air-sea interactions, which are not resolved in current-generation global  models. By combining SHiELD, MOM6, and WAVEWATCH III, we seek to capture the complex dynamics of atmosphere, ocean, and wave interactions at kilometer-scale resolutions.

We will discuss the methodology and present the infrastructure used to seamlessly couple these models, ensuring efficient data exchange and synchronization among the atmospheric, oceanic, and wave components. The coupling technique leverages GFDL’s in-house Flexible Modeling System (FMS) infrastructure which is employed for GFDL's suite of world-leading coupled climate models and those developed for kilometer-scale modeling of extreme weather events, enhancing the model's ability to accurately simulate the feedback mechanisms between the ocean surface and the atmosphere. We believe this new model will be a valuable tool for researchers and meteorologists, improving disaster preparedness and response strategies for coastal communities.