Before revision: 400px|The equilibrium solution with no greenhouse effect: ε=0 The infrared flux density out of the top of the atmosphere : In the last term, ε represents the fraction of upward longwave radiation from the surface that is absorbed, the absorptivity of the atmosphere.
After revision: is computed as400px|The equilibrium solution with no greenhouse effect: ε=0 The infrared flux density out of the top of the atmosphere : In the last term, ε represents the fraction of upward longwave radiation from the surface that is absorbed, the absorptivity of the atmosphere.