Modeling Mean Radiant Temperature Distribution in Urban Landscapes Using DART

The microclimatic conditions of the urban environment influence significantly thermal comfort human beings. One main biometeorology parameters is Mean Radiant Temperature (Tmrt), which quantifies effective radiative flux reaching a body. Simulation tools have proven useful to analyze behavior an space and its impact on inhabitants. We present new method produce detailed modeling Tmrt spatial distribution using 3-D Discrete Anisotropic Radiation Transfer model (DART). Our approach capable simulate at different scales under range including pattern, surface material ground, walls, roofs, properties vegetation (coverage, shape, spectral signature, Leaf Area Index Density). advantages our are found in (1) fine treatment radiation both short-wave long-wave domains, (2) specification optical materials vegetation, (3) precise representation component, (4) capability assimilate inputs derived from multisource remote sensing data. illustrate provide first evaluation Singapore, tropical city experiencing strong Urban Heat Island effect (UHI) seeking enhance outdoor comfort. comparison between DART modelled field estimated shows good agreement study site clear-sky condition over time period 10:00 19:00 (R2 = 0.9697, RMSE 3.3249). use transfer promising microclimate with increasing landscape details, build linkage methodology has potential contribute towards optimizing climate-sensitive design when combined appropriate tools.