文章基本信息

标题：Analytical investigation of the atmospheric radiation limits in semigray atmospheres in radiative equilibrium
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作者：Toni Pujol ; Gerald R. North
期刊名称：Tellus A: Dynamic Meteorology and Oceanography
电子版ISSN：1600-0870
出版年度：2003
卷号：55
期号：4
页码：328-337
DOI：10.3402/tellusa.v55i4.12101
摘要：We model the wavelength-dependent absorption of atmospheric gases by assuming constant massabsorption coefficients in finite-width spectral bands. Such a semigray atmosphere is analyticallysolved by a discrete ordinate method. The general solution is analyzed for a water vapor saturatedatmosphere that also contains a carbon dioxide-like absorbing gas in the infrared. A multiple stableequilibrium with a relative upper limit in the outgoing long-wave radiation is found. Differing fromprevious radiative–convective models, we find that the amount of carbon dioxide strongly modifiesthe value of this relative upper limit. This result is also obtained in a gray (i.e., equal absorption ofradiation at all infrared wavelengths) water vapor saturated atmosphere. The destabilizing effect ofcarbon dioxide implies that massive carbon dioxide atmospheres are more likely to reach a runawaygreenhouse state than thin carbon dioxide ones.