Reduced-Order Modelling of Underground Gas Energy Storage under Geological Uncertainty: Data and Code Repository

This repository contains datasets, code, and supplementary materials supporting the study titled: “Reduced-Order Modelling of Underground Gas Energy Storage under Geological Uncertainty.” The repository includes: • Full-order model (FOM) simulation scripts for gas flow in porous media based on Darcy-type governing equations• Reduced-order model (ROM) implementation using Proper Orthogonal Decomposition (POD) and projection-based techniques• Monte Carlo-based uncertainty quantification routines for stochastic geological variability• Synthetic geological realizations, including spatially varying porosity and permeability fields• Simulation outputs comprising pressure and velocity fields over space and time• ROM versus FOM error analysis datasets for model validation and performance assessment• Figure reproduction scripts enabling regeneration of all figures presented in the manuscript• Configuration and parameter files defining reservoir properties, boundary conditions, and numerical discretization• Supplementary derivations and methodological documentation for model reduction and numerical implementation The materials provided are sufficient to enable independent reproduction, verification, and validation of all results and figures presented in the associated article. All datasets are synthetic and generated for research, modelling, and reproducibility purposes. The repository is archived with a persistent DOI to ensure long-term accessibility and citation.