Quantum machine learning (QML) is making rapid progress, and QML-based models hold the promise of quantum advantages such as potentially higher expressivity and generalizability than their classical counterparts. Here, we present work on using a quantum neural net (QNN) to develop a parameterization of cloud cover for an Earth system model (ESM). ESMs are needed for predicting and projecting climate change, and can be improved in hybrid models incorporating both traditional physics-based components as well as machine learning (ML) models. We show that a QNN can predict cloud cover with a performance similar to a classical NN with the same number of free parameters and significantly better than the traditional scheme. We also analyse the learning capability of the QNN in comparison to the classical NN and show that, at least for our example, QNNs learn more consistent relationships than classical NNs.
@article{arxiv.2512.14208,
title = {Quantum Machine Learning for Climate Modelling},
author = {Mierk Schwabe and Lorenzo Pastori and Valentina Sarandrea and Veronika Eyring},
journal= {arXiv preprint arXiv:2512.14208},
year = {2026}
}
Comments
Accepted at IEEE Quantum Artificial Intelligence 2025 conference. This version is a pre-publication and may differ from the final IEEE-published version. The final paper will be available in the IEEE Xplore digital library