Relative influence of vegetation on urban energy budgets and surface temperatures

Two deterministic models were combined: one for canopy leaf energy budgets and one for street canyon energy budgets. The effects of street parks and roof gardens in contrast to nonvegetated city blocks were examined by the use of four typical urban morphologies, which were exposed latitudinally to summer and winter simulations. A variety of increases and decreases in short-wave radiation, net radiation, sensible heat flux, and system reradiation resulted. These changes appear to present the generalized limits of the possible responses to the addition of vegetation to non-vegetated city blocks.