Prediction of facial cooling while walking in cold wind

A dynamic model of cheek cooling has been modified to account for increased skin blood circulation of individuals walking in cold wind. This was achieved by modelling the cold-induced vasodilation response to cold as a varying blood perfusion term, which provided a source of convective heat to the skin tissues of the model. Physiologically-valid blood perfusion was fitted to replicate the cheek skin temperature responses of 12 individuals experimentally exposed to air temperatures from -10-10 to 10∘C at wind speeds from 2 to 8ms-1. Resultant cheek skin temperatures met goodness-of-fit criteria and implications on wind chill predictions are discussed.