To further illustrate the influence of solar radiation on the cooling effect of an increased albedo, the cooling effects of increased albedo on high temperatures in each month of a year were calculated from measured temperature data (just obtained from the slopes of the fitting lines between surface temperature and surface albedo for each month as shown in Fig. 13). These calculated cooling effects of increased albedo on high temperatures in each month of a year are presented in Fig. 14 (a) along with the peak solar radiation intensity in each month. It reveals that the cooling effect of increased albedo does change over seasons and thus changes with the peak solar radiation intensity. The cooling effect is higher in summer with high peak solar radiation intensity and lower during winter with low peak solar radiation. The correlation between cooling effect of increased albedo and solar radiation is shown in Fig. 14 (b) and with a best fit linear relation in Equation (1) below. An increase in peak solar radiation intensity by 100 W/m2 will produce an increase in cooling effect on surface temperature of albedo of 0.6 °C/0.1 change in albedo.where q is peak global solar radiation flux hitting the pavement (kW/m2); CEalbedo is the cooling effect of albedo increased by 0.1 on pavement temperature (°C/0.1 albedo). This empirical relationship can be used to roughly estimate the cooling effect of increased albedo or heating effect of reduced albedo on pavement for various climates and seasons with different solar radiation.