4 ms·

Oh that is interesting. A greek guy I know said to me that cities 'radiated heat' some years ago and I kinda didn't believe him. Localised to alleyways etc the

• mike_hearn 1y ago
  The urban heat island effect isn't to do with AC specifically. It's a mix of tarmac absorbing heat during the day then re-radiating it at night, a higher population density and a higher density of machinery. The night time re-radiation has the effect of bringing the min closer to the max readings, and so making it look as if temperatures are going up, even when max temps aren't changing much. The same effect can't be seen in rural places where there's less tarmac.
  • globular-toast 1y ago
    AC is an example of "more machinery", so it does contribute. But I would also argue that the redistribution of heat is itself harmful and AC is a horrible tragedy of the commons solution to the urban heat island problem.