Energy Input and Output on Earth

Key Questions

• What is energy input and output on earth?

  These are approximations but from NASA,
  340 #W#/#m^2# is received by Earth 100 #W#/#m^2# is reflected by the clouds and ground collectively so about 240 #W#/#m^2# is absorbed into either the ground or the atmosphere.

  The Earth emits around 400 #W#/#m^2#, to which 340 #W#/#m^2# is reflected back through greenhouse gases, the rest escaped through radiation. The clouds emit around 30 #W#/#m^2#, the atmosphere emits around 170 #W#/#m^2# and there is an atmospheric window which emits 40 #W#/#m^2#.

  These figures were generated using average over a ten year period.

  Hope this is useful.

  Foyboy298 · 1 · Oct 13 2015

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