Fig. 7

Correspondence between absolute air temperature and cool-roof-induced reduction in air temperature and evapotranspiration. Circles represent simulated daily means of air temperature reduction versus air temperature (a, d), evapotranspiration (ET) reduction versus air temperature (b, e), and ET reduction versus air temperature reduction (c, f) for June–October of 2001–2015, averaged over urban surfaces in NorCal (a, b, c) and SoCal (d, e, f). The circle colors along with the color bars illustrate the daily wind speeds. The black lines show the best linear fit (in a least-squares sense) to the data