Albedo measures a material’s ability to reflect solar radiation. Light-colored paving and cool roofs have high albedo, meaning they reflect more sunlight and absorb less heat.
Emissivity measures a material’s ability to release absorbed heat. High-emissivity materials effectively radiate heat away, helping reduce surface and surrounding air temperatures.
Together, high albedo and high emissivity help mitigate the urban heat island effect.
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JesseChou_123
3 months, 1 week ago