for each FF and reflect on the consistency of the results. Our analysis will show moderate-topoor correlations between the process-level rankings obtained using different FFs, and that this disagreement stems primarily from the significant deviations which manifest at the material level of description. We then quantify the average uncertainties between FFs from their process-level responses (described in section 2.5) and reveal that the prevailing source of uncertainty is the choice of charge scheme. We finally explore a potential pathway towards uncertainty mitigation in multiscale simulations of PSA-based CO2 capture processes and discuss future prospects for HTCS of materials.