" The ideal situation for a temperature logger is a grassy surface with no obstructing vegetation or structures within 10 m. Practical concerns however, prevented the selection of every site to perfectly fit these criteria. Loggers had to be placed so as not to interrupt the daily business operations of the location and to minimize potential for vandalism and theft. Figure 2a shows the study sites overlaid on a satellite image of the region. (...)
The daily temperature means were calculated by averaging the 96 15-minute interval readings for each day. Looking at Figure 13 below, the average daily temperature of the rural C00 site is consistently lower than the downtown urban site C08. Over the period of record, the average temperature of C08 is 13.99 º C, which is 1.99 º C warmer than rural site C00. This indicates a UHI magnitude of ~ 2 º C over an annual period. "
Characteristics of the Urban Heat Island in Greater Cincinnati, Ohio; June 25, 2002 to June 24, 2003, Division of Research and Advanced Studies of the University of Cincinnati, Julianne H. Bell, 2004
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