Table 3.
Correlation analyses between daily average, minimum, and maximum UTCI versus direct thermal indices and air temperature indicators in urban and suburban areas of Florence and Livorno during the warmest period of the year (May–October) from 2006 to 2008.
| Daily thermal indices and air temperature indicators | Inland plain city: Florence | Coastal plain city: Livorno | Mean values from all stations | ||
|---|---|---|---|---|---|
| Urban (missing data = 0%) |
Suburban (missing data = 0.4%) |
Urban (missing data = 0%) |
Suburban (missing data = 0%) |
Slope; R 2 (%) | |
| Slope; R 2 (%) | Slope; R 2 (%) | Slope; R 2 (%) | Slope; R 2 (%) | ||
| Average | |||||
| ATsun | 1.193; 96.22 | 1.121; 96.85 | 1.284; 96.41 | 1.114; 96.51 | 1.178; 96.50 |
| ATsha | 1.029; 96.27 | 0.971; 96.76 | 1.073; 96.10 | 0.926; 96.71 | 1.000; 96.46 |
| ATind | 0.949; 95.00 | 0.891; 94.61 | 1.008; 94.80 | 0.821; 88.95 | 0.917; 93.34 |
| T air | 0.865; 96.07 | 0.796; 94.82 | 0.827; 94.62 | 0.562; 87.24 | 0.763; 93.19 |
| Minimum | |||||
| ATsun | 1.280; 97.32 | 1.160; 95.26 | 1.293; 97.43 | 0.992; 96.21 | 1.192; 96.56 |
| ATsha | 1.113; 97.41 | 1.014; 94.82 | 1.138; 97.99 | 0.848; 96.46 | 1.028; 96.67 |
| ATind | 1.038; 96.07 | 0.935; 90.50 | 1.070; 96.11 | 0.711; 83.53 | 0.939; 91.55 |
| T air | 0.866; 93.50 | 0.764; 87.95 | 0.854; 92.60 | 0.502; 79.27 | 0.747; 88.33 |
| Maximum | |||||
| ATsun | 1.110; 93.61 | 1.050; 94.03 | 1.263; 91.80 | 1.176; 89.51 | 1.150; 92.24 |
| ATsha | 0.951; 91.06 | 0.909; 92.49 | 0.960; 85.96 | 0.869; 83.11 | 0.922; 88.16 |
| ATind | 0.863; 89.77 | 0.830; 90.59 | 0.891; 84.15 | 0.792; 76.15 | 0.844; 85.17 |
| T air | 0.881; 93.58 | 0.824; 93.59 | 0.801; 87.70 | 0.549; 76.63 | 0.764; 87.88 |
UTCI: Universal Thermal Climate Index; ATsun: apparent temperature assessed outdoors also taking into consideration the solar radiation contribution; ATsha: apparent temperature assessed outdoors in the shade; ATind: apparent temperature assessed in indoor conditions; T air: environmental temperature.