VARS-TOOL: a next-generation, multi-method sensitivity and uncertainty analysis software toolbox

VARS-TOOL is a next-generation, multi-method sensitivity and uncertainty analysis software toolbox, applicable to the full range of computer simulation models, including Dynamical Earth Systems Models (DESMs). Developed primarily around the powerful “Variogram Analysis of Response Surfaces” (VARS) framework, VARS-TOOL provides a comprehensive suite of algorithms and methods for global sensitivity analysis (GSA), including ones based on the derivative-based (such as the method of Morris), distribution-based (particularly the variance-based method of Sobol’), and variogram-based (such as VARS) approaches.