Ensemble forecasting: A foray of dynamics into the realm of statistics

J Feng, Z Toth, J Zhang, M Peña - Quarterly Journal of the …, 2024 - Wiley Online Library
Uncertain quantities are often described through statistical samples. Can samples for
numerical weather forecasts be generated dynamically? At a great expense, they can. With …

Deep learning of systematic sea ice model errors from data assimilation increments

W Gregory, M Bushuk, A Adcroft… - Journal of Advances …, 2023 - Wiley Online Library
Data assimilation is often viewed as a framework for correcting short‐term error growth in
dynamical climate model forecasts. When viewed on the time scales of climate however …

Online model error correction with neural networks in the incremental 4D‐Var framework

A Farchi, M Chrust, M Bocquet… - Journal of Advances …, 2023 - Wiley Online Library
Recent studies have demonstrated that it is possible to combine machine learning with data
assimilation to reconstruct the dynamics of a physical model partially and imperfectly …

Surrogate modeling for the climate sciences dynamics with machine learning and data assimilation

M Bocquet - Frontiers in Applied Mathematics and Statistics, 2023 - frontiersin.org
The outstanding breakthroughs of deep learning in computer vision and natural language
processing have been the horn of plenty for many recent developments in the climate …

Interpretable structural model error discovery from sparse assimilation increments using spectral bias‐reduced neural networks: A quasi‐geostrophic turbulence test …

R Mojgani, A Chattopadhyay… - Journal of Advances in …, 2024 - Wiley Online Library
Earth system models suffer from various structural and parametric errors in their
representation of nonlinear, multi‐scale processes, leading to uncertainties in their long …

Filtering dynamical systems using observations of statistics

E Bach, T Colonius, I Scherl, A Stuart - Chaos: An Interdisciplinary …, 2024 - pubs.aip.org
We consider the problem of filtering dynamical systems, possibly stochastic, using
observations of statistics. Thus, the computational task is to estimate a time-evolving density …

A machine‐learning and data assimilation forecasting framework for surface waves

P Pokhrel, M Abdelguerfi, E Ioup - Quarterly Journal of the …, 2024 - Wiley Online Library
In this article, we combine deep symbolic regression (DSR) and ensemble optimal
interpolation‐based data assimilation (DA) methods to correct the error in forecasts from the …

Ensemble Kalman Filter Data Assimilation into the Surface Flux Transport Model to Infer Surface Flows: An Observing System Simulation Experiment

S Dash, ML DeRosa, M Dikpati, X Sun… - The Astrophysical …, 2024 - iopscience.iop.org
Abstract Knowledge of the global magnetic field distribution and its evolution on the Sun's
surface is crucial for modeling the coronal magnetic field, understanding the solar wind …

Improving the reliability of ML‐corrected climate models with novelty detection

C Sanford, A Kwa, O Watt‐Meyer… - Journal of Advances …, 2023 - Wiley Online Library
Using machine learning (ML) for the online correction of coarse‐resolution atmospheric
models has proven effective in reducing biases in near‐surface temperature and …

Representation learning with unconditional denoising diffusion models for dynamical systems

TS Finn, L Disson, A Farchi, M Bocquet… - …, 2023 - egusphere.copernicus.org
We propose denoising diffusion models for data-driven representation learning of dynamical
systems. In this type of generative deep learning, a neural network is trained to denoise and …