Remediation of greenhouse problem through replacement of fossil fuels by hydrogen

Abstract There has been substantial observational evidence that the concentration of carbon dioxide (CO 2 ) in the atmosphere and the mean temperature of the Earth have been rising, mainly due to the combustion of fossil fuels. “Greenhouse” gases (mainly CO 2 ) absorb the long-wavelength radiation, which would otherwise escape into space, emitted by the Earth and reradiate partially back to Earth. The temperature of the Earth rises due to this, and could lead to catastrophic changes in the global climate. A model is developed to predict the concentration of atmospheric CO 2 and the mean temperature of the Earth. The effect of replacement of fossil fuels by hydrogen is analysed. It is shown that reversing the increasing trend in the concentration of CO 2 , as well as Earth's mean temperature, is possible. The reversals are predicted to lag by 30 to 60 years depending on the rate by which hydrogen replaces the fossil fuels.

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