Atmospheric temperature response to variations in CO2 concentration and the solar-constant |
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| Authors: | Ilias M Vardavas John H Carver |
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| Institution: | Research School of Physical Sciences, Australian National University, Canberra, ACT, Australia |
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| Abstract: | The response of the Earth's global mean vertical atmospheric temperature structure to large increases in the atmospheric CO2 concentration was examined using a 1-D radiative-convective atmospheric model. It was found that the greenhouse warming of the terrestrial surface can be strongly inhibited by the development of a more isothermal, moister and higher troposphere than at present. The saturation of the strong CO2 infrared bands for high CO2 concentrations further inhibits the greenhouse warming to such an extent that a runaway greenhouse fuelled only by a rise in the atmospheric CO2 is not possible. However, a continuously rising solar-constant does eventually lead to a runaway. |
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