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Characteristics of selected case studies based on Landsat 8 data (EROS 2024) and the Urban Atlas (EEA 2020)_
| Parameter | Preschool No. 42 | Preschool No. 87 | Preschool No. 115 | |||
|---|---|---|---|---|---|---|
| PG | Buffer (45 m) | PG | Buffer (45 m) | PG | Buffer (45 m) | |
| Area (m2) | 3446 | 18,616 | 2853 | 17,432 | 1029 | 12,595 |
| NDVI | 0.27 | 0.16 | 0.24 | 0.15 | 0.22 | 0.20 |
| ALST (°C) | 38.26 | 38.55 | 39.80 | 39.96 | 37.74 | 37.59 |
| TCC(%) | 57.09 | 17.97 | 60.47 | 17.13 | 36.63 | 15.23 |
| Mean number of building floors | 0 | 3.43 | 0 | 3.67 | 0 | 4.00 |
| LU/LC | Continuous urban fabric (S.L.: > 80%) | Continuous urban fabric (S.L.: > 80%) | Industrial, commercial, public, military and private units | |||
Characteristics of PGs in Poznań due to the PGCE status based on the orthophoto of Poznań (SISP 2021) and Landsat 8 data (EROS 2024)_
| Characteristics | ALST (°C) | Area (m2) | NDVI | TCC (%) | Average building height (No. of floors) |
|---|---|---|---|---|---|
| Preschools with cooling effect, N = 117 | |||||
| Minimum | 29.35 | 48 | 0.09 | 0.00 | 1.07 |
| Maximum | 40.09 | 5300 | 0.40 | 97.50 | 9.25 |
| Area-weighted mean | 36.66 | 1767 | 0.26 | 44.97 | 3.02 |
| Mean | 36.47 | 1767 | 0.25 | 40.79 | 2.93 |
| Standard deviation | 1.55 | 1425 | 0.05 | 21.20 | 1.54 |
| Preschools with warming effect, N = 84 | |||||
| Minimum | 34.18 | 26 | 0.08 | 0.00 | 1.00 |
| Maximum | 42.39 | 6893 | 0.33 | 85.79 | 7.33 |
| Area-weighted mean | 37.14 | 1481 | 0.24 | 34.05 | 2.46 |
| Mean | 37.28 | 1481 | 0.22 | 31.20 | 2.43 |
| Standard deviation | 1.46 | 1435 | 0.05 | 21.61 | 1.25 |
Greenness and building characteristics of PGs and their buffers based on Landsat 8 data (EROS 2024) and TCC (SISP 2018)_
| Statistics | Group 1 PGs with high ANDVI (≥0.25) and below average ALST (<36.83; N = 76) | Group 2 PGs with high ANDVI (≥0.25) and above average ALST (>36.83; N = 29) | Group 3 PGs with low ANDVI (<0.25) and above average ALST (>36.83; N = 84) | Group 4 PGs with low ANDVI (<0.25) and below average ALST (<36.83; N = 41) |
|---|---|---|---|---|
| TCC (%) in PGs | ||||
| Mean | 42.74 | 38.38 | 32.41 | 30.31 |
| Median | 42.73 | 37.84 | 32.38 | 32.96 |
| Min | 0.00 | 4.91 | 0.00 | 0.00 |
| Max | 97.50 | 68.90 | 81.80 | 85.79 |
| TCC (%) in PG buffers | ||||
| Mean | 30.71 | 22.42 | 17.44 | 23.17 |
| Median | 31.15 | 21.76 | 16.44 | 22.86 |
| Min | 4.01 | 7.54 | 3.54 | 7.61 |
| Max | 90.06 | 40.34 | 39.20 | 38.85 |
| Greenness level (ANDVI) of PGs | ||||
| Mean | 0.28 | 0.28 | 0.20 | 0.20 |
| Median | 0.28 | 0.27 | 0.20 | 0.21 |
| Min | 0.25 | 0.25 | 0.08 | 0.12 |
| Max | 0.40 | 0.33 | 0.24 | 0.24 |
| Greenness level (ANDVI) of PG buffers | ||||
| Mean | 0.26 | 0.22 | 0.18 | 0.22 |
| Median | 0.25 | 0.22 | 0.18 | 0.21 |
| Min | 0.17 | 0.16 | 0.08 | 0.15 |
| Max | 0.40 | 0.27 | 0.25 | 0.27 |
| Number of floors in buildings located within buffer zones of preschools | ||||
| Mean | 2.31 | 2.80 | 2.47 | 2.15 |
| Median | 2.00 | 2.00 | 2.00 | 2.00 |
| Min | 0 | 0 | 0 | 1 |
| Max | 18 | 18 | 18 | 12 |