Verification, validation, and uncertainty-quantification dataset for a one-dimensional PEM electrolysis model (NEOM green hydrogen programme)

Raw COMSOL polarisation exports (grid-convergence ladder, three frozen-parameter validation condition sets, four sensitivity perturbation sweeps), digitised experimental points from the three published validation sources (Garcia-Valverde et al. 2012; Suermann et al. 2017; Marangio et al. 2009) with extraction products, and processed comparison and decomposition results, supporting the manuscript "Verification, multi-dataset validation, and uncertainty quantification of a one-dimensional PEM electrolysis model for gigawatt-scale green hydrogen design" (submitted to the International Journal of Hydrogen Energy). CSV and plain-text only.