Electrospinning is one processing technique that can be used to manufacture anion exchange membranes (AEMs) with good mechanical stability while also maintaining high conductivities. The unique properties of electrospun AEMs may affect their response to carbon dioxide absorption, a process known to reduce the conductivity of traditional AEMs. In this study, we develop two models that allow us to predict the response of these membranes upon exposure to CO2 in an operating fuel cell. In the first model, the morphological parameters of the electrospun membrane are analytically determined as a function of ionomer fiber content using a simplified picture of ion transport through the network of ionomer fibers. The results of this morphology model are then used in the second model, which numerically predicts the carbonation dynamics and ionic conductivity of the AEMs during fuel cell operation. The model predictions are validated to experiments performed on fuel cells employing well-known single-phase AEMs. The results herein investigate the membranes' conductivity loss/reclamation as a function of operating current, cathode gas CO2 content, and ionomer fiber content. (C) 2019 The Electrochemical Society.