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Prépublication · 2026 arXiv EN

GNN-VIEW: Visual Inspection and Explanation of Graph-based Earth-System Models

Machine learning Earth-system models are becoming increasingly important, and so is their development. Graph-based models, one of the most prominent approaches, allow developers to constrain the learning process before training via graph connectivity. Yet, dev...

Alessandro Lucatelli, Ferdinand Unterhuber et al. #cs.LG
Prépublication · 2026 arXiv EN

Bistability of ice-shelf cavity circulation and melt under coastal polynya forcing

Antarctic ice shelves play a key role in controlling the mass loss of the Antarctic Ice Sheet. Increasing evidence from regional studies suggests the possibility of abrupt transitions from low to high basal melt regimes under future climate forcing. The comput...

Louis Saddier, Corentin Herbert et al. #physics.ao-ph
Prépublication · 2026 arXiv EN

Instability of exact finite-amplitude acoustic-gravity waves

Godin (\textit{J. Fluid Mech.}, vol. 767, 2015, pp. 52--64) showed that compressible fluids in a uniform gravity field support finite-amplitude incompressible wave motions, in which every parcel conserves pressure and density, and constructed exact Gerstner-ty...

Christian Puntini #physics.flu-dyn
Prépublication · 2026 arXiv EN

WRF-JAX v1.1.28: a differentiable regional weather model with fully coupled physics, numerically consistent with WRF and matching 128-process CPU performance on a single GPU

Porting a regional weather model in its entirety to a graphics processing unit (GPU) requires complete implementation of the dynamical core and all physical processes, and improved computational efficiency. This paper introduces WRF-JAX v1.1.28, a JAX reimplem...

Shijin Yuan, Tianyu Shen et al. #physics.ao-ph
Prépublication · 2026 arXiv EN

Energy cascades in atmospheric moist convection

We analyze scale-by-scale budgets of velocity and buoyancy second-order structure functions using Large Eddy Simulation of the BOMEX trade-wind cumulus layer. The simulation utilizes a $10\,\mathrm{m}$ grid resolution under the anelastic approximation, incorpo...

Paweł Jędrejko, Marta Wacławczyk et al. #physics.flu-dyn
Prépublication · 2026 arXiv EN

Satellite-derived bathymetry of Arabian Gulf ports under leakage-free validation: a multi-site benchmark of empirical, machine-learning and deep-learning models against 285,000 multibeam soundings, with an outlook for UAE waters

Satellite-derived bathymetry (SDB) is often proposed as a low-cost complement to multibeam surveys of ports, but its accuracy is seldom measured on an area the model has never seen. We test SDB in the turbid, shallow and tidal waters of the Abu Dhabi coast aga...

Muhammad Saeed, Fatema Al Hajri et al. #cs.LG
Prépublication · 2026 arXiv EN

Retriever-Free Retrieval: Navigating Documents with Decision Models

While language models have become dramatically more capable, retrieval still largely relies on lexical matching or similarity in fixed embedding spaces. This creates a capability asymmetry: what the retriever fails to find, even the strongest generator cannot...

Chao Wan, Paul Jünger et al. #cs.AI
Prépublication · 2026 arXiv EN

Center-of-Mass Interpretation of Evolution Strategies

Evolution strategies (ES) update a model by sampling a population of perturbed copies, scoring each one, and moving in the reward-weighted direction of the perturbations. This update is usually presented as an estimate of a smoothed gradient. We present a geom...

Akshat Gupta #cs.AI
Prépublication · 2026 arXiv EN

Learning Force-Reactive Humanoid Loco-Manipulation

Many everyday tasks require controlling contact force as well as motion. On a humanoid, this force must often be coordinated across both hands and the whole body, and cannot be specified by kinematic trajectories alone. Therefore, we present FLORE, a framework...

Sihang Li, Xiaofeng Guo et al. #cs.RO