Modification of Human-Biometeorologically Significant Radiant Flux Densities by Shading as Local Method to Mitigate Heat Stress in Summer within Urban Street Canyons

Figure 19

1 h mean values of the long-wave radiant flux densities 𝐿_𝑖,abs (𝑖 = down, up, E, S, W, and N) from the three-dimensional environment absorbed by the human-biometeorological reference person, related to the 1 h peak value of 𝐿_up,abs (𝐿_up,abs,max = 28 W/m²), SSW-facing sidewalk (shaded by tree canopies) of a WNW-ESE street canyon, “Vauban” quarter in Freiburg during typical Central European summer day.