Abstract

This study evaluates the effect of the morphological characteristics of 4 urban districts in Thessaloniki, Greece on the vertical profile of the Tair inside the various urban canyons under different meteorological conditions. ENVI-met v.4 microclimate simulations are conducted for the 4 selected case study areas, while different meteorological boundary conditions are also considered. The obtained simulation results generally suggest significant differentiations on the local climatic conditions throughout the year, due to the diverse morphological characteristics. The analysis of the vertical Tair profile, revealed low deviations during night-time and peak deviations at noon. The maximum Tair discrepancies among all areas have been mainly attributed to the different amounts of solar radiation, received by the canyons’ surfaces and the respective sensible heat release. However, in all cases, the estimated Tair differences among the study areas decreased as the distance from the ground increased.

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