The oasis effect refers to the creation of a local microclimate that is cooler than the surrounding dry area due to evaporation or evapotranspiration of a water source or plant life and higher albedo of plant life than bare ground.[1] The oasis effect is so-named because it occurs in desert oases.[2] Urban planners can design a city's layout to optimize the oasis effect to combat the urban heat island effect.[3] Since it depends on evaporation, the oasis effect differs by season.[1][2]