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Atmospheric concentrations greenhouse, mean concentration

Methane is an important greenhouse gas in the atmosphere that has a mean concentration of 1.7 ppm. While this is considerably lower than that of CO2 (350 ppm) it has a greater radiative forcing capability (Cicerone and Qremland, 1988). Despite the smaller... [Pg.94]

The atmospheric concentration of CO, which is a main greenhouse gas, has grown significantly since pre-industrial times and caused an increase in global mean surface temperature. Therefore, CO mitigation measures should intensively be implemented. [Pg.77]

The mean emitted power of the Earth-atmosphere system, 240 W corresponds to a blackbody temperature of 255 K. The surface emission, 390 W m, corresponds to a blackbody temperature of 288 K. The 33 K difference between the blackbody temperatures of the Earth s surface and the Earth-atmosphere system is the so-called greenhouse effect. Increases in concentrations of CO2 and other GHGs since the Industrial Revolution are estimated to have contributed about +2.5 W m to the global and annual average radiation balance (IPCC, 1995). [Pg.36]

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Atmospheric concentration

Mean concentration

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