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Climate of the Past An interactive open-access journal of the European Geosciences Union
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Volume 11, issue 3
Clim. Past, 11, 559–570, 2015
https://doi.org/10.5194/cp-11-559-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Clim. Past, 11, 559–570, 2015
https://doi.org/10.5194/cp-11-559-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 27 Mar 2015

Research article | 27 Mar 2015

Diminished greenhouse warming from Archean methane due to solar absorption lines

B. Byrne and C. Goldblatt

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High methane concentrations are thought to have helped sustain warm surface temperatures on the early Earth (~3 billion years ago) when the sun was only 80% as luminous as today. However, radiative transfer calculations with updated spectral data show that methane is a stronger absorber of solar radiation than previously thought. In this paper we show that the increased solar absorption causes a redcution in the warming ability of methane in the Archaean atmosphere.
High methane concentrations are thought to have helped sustain warm surface temperatures on the...
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