Generative diffusion for regional surrogate models from sea-ice simulations
We introduce deep generative diffusion for multivariate and regional surrogate modeling learned from sea-ice simulations. Given initial conditions and atmospheric forcings, the model is trained to generate forecasts for a 12-hour lead time from simulations by the state-of-the-art sea-ice model neXtS...
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2024
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Online Access: | http://dx.doi.org/10.22541/au.171386536.64344222/v1 |
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crwinnower:10.22541/au.171386536.64344222/v1 2024-06-02T08:14:15+00:00 Generative diffusion for regional surrogate models from sea-ice simulations Finn, Tobias Sebastian Durand, Charlotte Farchi, Alban Bocquet, Marc Rampal, Pierre Carrassi, Alberto 2024 http://dx.doi.org/10.22541/au.171386536.64344222/v1 unknown Authorea, Inc. https://creativecommons.org/licenses/by/4.0/ posted-content 2024 crwinnower https://doi.org/10.22541/au.171386536.64344222/v1 2024-05-07T14:19:29Z We introduce deep generative diffusion for multivariate and regional surrogate modeling learned from sea-ice simulations. Given initial conditions and atmospheric forcings, the model is trained to generate forecasts for a 12-hour lead time from simulations by the state-of-the-art sea-ice model neXtSIM. For our regional model setup, the diffusion model outperforms as ensemble forecast all other tested models, including a free-drift model and a stochastic extension of a deterministic data-driven surrogate model. The diffusion model additionally retains information at all scales, resolving smoothing issues of deterministic models. Furthermore, by generating physical consistent forecasts, previously unseen for such kind of completely data-driven surrogates, the model can almost match the scaling properties of neXtSIM, which are also observed for real sea ice. With these results, we provide a strong indication that diffusion models can achieve similar results as traditional geophysical models with the significant advantage of being orders of magnitude faster and solely learned from data. Other/Unknown Material Sea ice The Winnower |
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Open Polar |
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The Winnower |
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crwinnower |
language |
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description |
We introduce deep generative diffusion for multivariate and regional surrogate modeling learned from sea-ice simulations. Given initial conditions and atmospheric forcings, the model is trained to generate forecasts for a 12-hour lead time from simulations by the state-of-the-art sea-ice model neXtSIM. For our regional model setup, the diffusion model outperforms as ensemble forecast all other tested models, including a free-drift model and a stochastic extension of a deterministic data-driven surrogate model. The diffusion model additionally retains information at all scales, resolving smoothing issues of deterministic models. Furthermore, by generating physical consistent forecasts, previously unseen for such kind of completely data-driven surrogates, the model can almost match the scaling properties of neXtSIM, which are also observed for real sea ice. With these results, we provide a strong indication that diffusion models can achieve similar results as traditional geophysical models with the significant advantage of being orders of magnitude faster and solely learned from data. |
format |
Other/Unknown Material |
author |
Finn, Tobias Sebastian Durand, Charlotte Farchi, Alban Bocquet, Marc Rampal, Pierre Carrassi, Alberto |
spellingShingle |
Finn, Tobias Sebastian Durand, Charlotte Farchi, Alban Bocquet, Marc Rampal, Pierre Carrassi, Alberto Generative diffusion for regional surrogate models from sea-ice simulations |
author_facet |
Finn, Tobias Sebastian Durand, Charlotte Farchi, Alban Bocquet, Marc Rampal, Pierre Carrassi, Alberto |
author_sort |
Finn, Tobias Sebastian |
title |
Generative diffusion for regional surrogate models from sea-ice simulations |
title_short |
Generative diffusion for regional surrogate models from sea-ice simulations |
title_full |
Generative diffusion for regional surrogate models from sea-ice simulations |
title_fullStr |
Generative diffusion for regional surrogate models from sea-ice simulations |
title_full_unstemmed |
Generative diffusion for regional surrogate models from sea-ice simulations |
title_sort |
generative diffusion for regional surrogate models from sea-ice simulations |
publisher |
Authorea, Inc. |
publishDate |
2024 |
url |
http://dx.doi.org/10.22541/au.171386536.64344222/v1 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.22541/au.171386536.64344222/v1 |
_version_ |
1800738027413176320 |