Why does CO2 cause heating in troposphere but cooling mesosphere? Can anyone explain this?

  • $\begingroup$ I recommend reading this paper: earth-syst-dynam.net/7/697/2016/esd-7-697-2016.pdf Quote: (i) the blocking effect, associated with a cooling due to the fact that CO2 absorbs radiation at wavelengths where the atmosphere is already relatively opaque, and (ii) the indirect solar effect, associated with a cooling in places where an additional (solar) heating term is present (which on Earth is particularly the case in the upper parts of the ozone layer). $\endgroup$ – JulPal Nov 29 '18 at 17:36
  • $\begingroup$ Hi Sachin, how much do you know about radiative transfer? Do you know what an optically thick/thin transition is? Just to establish what your previous knowledge is. $\endgroup$ – AtmosphericPrisonEscape Nov 30 '18 at 17:19

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