A Likelihood-Based Generative Approach for Spatially Consistent Precipitation Downscaling

Abstract

Deep learning has emerged as a promising tool for precipitation downscaling. However, current models rely on likelihood-based loss functions to properly model the precipitation distribution, leading to spatially inconsistent projections when sampling. This work explores a novel approach by fusing the strengths of likelihood-based and adversarial losses used in generative models. As a result, we propose a likelihood-based generative approach for precipitation downscaling, leveraging the benefits of both methods.

Accepted at ICML 2024 Machine Learning for Earth System Modeling workshop