Submicronic fluorescein aerosols were used as the tracer during four test releases in a field experiment performed at the University of Salento, Lecce (Italy) during October 2014. The role of surface building materials is investigated through the analysis of near surface thermal flow characteristics. Turbulence and thermal conditions in the flow and wall boundary layer were measured simultaneously using an array of meteorological instruments, while concentration of fluorescein deposited on the five different surface building materials were measured by spectrofluorometric techniques. Wall and boundary layer temperatures were determined. Here fluorescein concentration and deposition velocity during the first release test are shown.
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