Visual analytics and microclimate analysis: A use case for a visualization tool developed for mobile measurements
In this presentation, the functionalities of the visualization tool are demonstrated using transect measurements collected at Power Ranch, Gilbert, Arizona. This data set was acquired using a golf cart equipped with sensors measuring surface temperature as well as air temperature and relative humidity at two different heights along a certain route over the course of one year. We show how the framework can be used to gain insight into possible impacts of local urban design on the surrounding microclimate. In particular, transect data and data from surrounding weather stations were integrated to approximate the sensor-specific source area at each measurement point along the transect route. The land use fractions contained within each resulting source area are then used to quantify the relationship between the measured signal and the surrounding urban form. These correlations are analyzed in terms of their temporal variability over the course of a day and a year. Furthermore, data from all transect runs are aggregated and clustered to highlight route sectors of similar temporal value distribution. The challenges during this analysis are described, as well as the solutions provided by the visualization framework.