Robust Ocean Subgrid-Scale Parameterizations Using Fourier Neural Operators

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Robust Ocean Subgrid-Scale Parameterizations Using Fourier Neural Operators

Authors

Victor Mangeleer, Gilles Louppe

Abstract

In climate simulations, small-scale processes shape ocean dynamics but remain computationally expensive to resolve directly. For this reason, their contributions are commonly approximated using empirical parameterizations, which lead to significant errors in long-term projections. In this work, we develop parameterizations based on Fourier Neural Operators, showcasing their accuracy and generalizability in comparison to other approaches. Finally, we discuss the potential and limitations of neural networks operating in the frequency domain, paving the way for future investigation.

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