Monitoring the Urban Heat Island from satellite images


Causes of UHI

  • replacement of natural evaporative by non-porous surfaces
  • larger surface area
  • Higher heat capacity (ability of a body to store heat)
  • Higher building mass with high thermal inertia   (tendency of a material to   resist change in temperature)

NASA’s ASTER satellite sensor (raw data) night-time thermal image at 10.42pm 31.01.07