Spatial-temporal Analysis of the Urban Heat Island of a Subtropical City by Using Mobile Measurement

Mobile temperature and humidity measurements have been performed along a 17-km transect in a local urban area in Shenzhen (China), during the period from August to December in 2013. The spatial-temporal distributions of Urban Heat Island intensity (UHII) show that the overall average UHII at different times vary between 0oC and 2oC. The daily average UHII change from 0oC to 3oC. The spatial distributions of UHII express obvious UHII differences as a whole. The correlation coefficients between spatial influential factors and the UHII reveal that the formation of UHII is influenced by both the urban surface characteristics and weather conditions.