2134/9287 George Havenith George Havenith Dusan Fiala Dusan Fiala Krzysztof Blazejczyk Krzysztof Blazejczyk Mark Richards Mark Richards Peter Broede Peter Broede Ingvar Holmer Ingvar Holmer Hannu Rintamaki Hannu Rintamaki Yael Benshabat Yael Benshabat Gerd Jendritzky Gerd Jendritzky The UTCI-clothing model Loughborough University 2012 Clothing insulation Cold Heat Wind Vapour resistance Design Practice and Management not elsewhere classified Atmospheric Sciences 2012-01-19 14:47:48 Journal contribution https://repository.lboro.ac.uk/articles/journal_contribution/The_UTCI-clothing_model/9346298 The Universal Thermal Climate Index (UTCI) was conceived as a thermal index covering the whole climate range from heat to cold. This would be impossible without considering clothing as the interface between the person (here, the physiological model of thermoregulation) and the environment. It was decided to develop a clothing model for this application in which the following three factors were considered: (1) typical dressing behaviour in different temperatures, as observed in the field, resulting in a model of the distribution of clothing over the different body segments in relation to the ambient temperature, (2) the changes in clothing insulation and vapour resistance caused by wind and body movement, and (3) the change in wind speed in relation to the height above ground. The outcome was a clothing model that defines in detail the effective clothing insulation and vapour resistance for each of the thermo-physiological model's body segments over a wide range of climatic conditions. This paper details this model's conception and documents its definitions.