"Uncertainty assessment" refers to the process of evaluating and determining the level of uncertainty or doubt associated with a particular situation, prediction, or measurement. Full definition
Physically plausible projections are challenging9: numerical models with sufficient spatial resolution to simulate grounding - line processes have been too computationally expensive2, 3,10 to generate large ensembles for uncertainty assessment, and lower - resolution model projections11 rely on parameterizations that are only loosely constrained by present day changes. (nature.com)
This requires a fairly lengthy and interconnected series of tasks, including collecting emission factors and activity data, selecting appropriate methods, estimating GHG emissions and removals, implementing uncertainty assessment and quality assurance / quality control procedures, reporting the results, and documenting and archiving all relevant data and procedures. (uncclearn.org)
Refsgaard et al. review 14 different methods commonly used in uncertainty assessment and characterization, 12 of which are relevant for type of problems relevant here (IPCC WG1): data uncertainty engine (DUE), error propagation equations, expert elicitation, inverse modelling (parameter estimation), inverse modelling, Monte Carlo analysis, multiple model simulation, NUSAP, quality assurance, scenario analysis, sensitivity analysis, and uncertainty matrix. (judithcurry.com)