*3.4. Determination of the Park Cooling Intensity (PCI)*

Park Cooling Intensity (PCI) usually calculates the temperature difference between the inside and outside of the park [28,51,52]. It can be air temperature or land surface temperature. In this study, the PCI (units in ◦C) was defined as the mean LST difference. Equation (1):

$$\text{PCI} = \Delta \text{T} = \text{T}\_{\text{ul}} - \text{T}\_{\text{P}} \tag{1}$$

where Tu is the mean LST of an urban area of the 500m buffer zone outside of the park, and Tp is the mean LST inside the park. The buffer zone includes the area around the park, which contains different land cover types: Buildings, roads, impervious surfaces, trees, and green spaces.
