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Título:	Analytical investigation of the atmospheric radiation limits in semigray atmospheres in radiative equilibrium
Autor/a:	Pujol i Sagaró, Toni; North, Gerald R.
Abstract:	We model the wavelength-dependent absorption of atmospheric gases by assuming constant mass absorption coefficients in finite-width spectral bands. Such a semigray atmosphere is analytically solved by a discrete ordinate method. The general solution is analyzed for a water vapor saturated atmosphere that also contains a carbon dioxide-like absorbing gas in the infrared. A multiple stable equilibrium with a relative upper limit in the outgoing long-wave radiation is found. Differing from previous radiative–convective models, we find that the amount of carbon dioxide strongly modifies the value of this relative upper limit. This result is also obtained in a gray (i.e., equal absorption of radiation at all infrared wavelengths) water vapor saturated atmosphere. The destabilizing effect of carbon dioxide implies that massive carbon dioxide atmospheres are more likely to reach a runaway greenhouse state than thin carbon dioxide ones
Materia(s):	-Radiació atmosfèrica -Atmospheric radiation -Efecte hivernacle (Meteorologia) -Greenhouse effect, Atmosphere -Gasos -- Absorció i adsorció -Gases -- Absorption and adsorption
Derechos:	Attribution-NonCommercial 3.0 Spain http://creativecommons.org/licenses/by-nc/3.0/es/
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	International Meteorological Institute in Stockholm
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