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Table 8 Main input parameters for the simulations with the urban unit model in January 2013

From: Transforming typical hourly simulation weather data files to represent urban locations by using a 3D urban unit representation with micro-climate simulations

Input parameter Jan 13, 2013 Jan 12, 2013 Jan 24, 2013 Source
Weather forcing Group Group 1 Group 2 Group 3  
Specific humidity 2500 m (750 mbar) gr w/kg dry air 3.3 2.0 1.1 [52]
Prevalent wind direction (N = 0 clockwise) 22 225 225 [53]
Wind speed 10 m ab. gr. m/s 3.2 2.1 2.5 [53]
Roughness length z0 0.1 0.1 0.1 [36]
Mean wall albedo 0.23 0.23 0.23 [49]
Mean roof albedo 0.50 0.50 0.50  
Wall heat transmittance W. m −2 . K −1 1.4 1.4 1.4  
Roof heat transmittance W. m −2 . K −1 0.9 0.9 0.9  
Underground soil temperature (Upper-Middle-Deep layer) K 278.4 277.3 280.6 [52]
279.6 279.5 281.4
282.6 283.0 282.4
Underground soil humidity (Upper-Middle-Deep layer) 38 % 36 % 34 % [52]
38 % 36 % 35 %
36 % 35 % 35 %