Atmospheric residence time of methane

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The atmospheric residence time of methane in the atmosphere is 12 years. If global methane emissions total 630 Mt (megatonnes) per year, what is the steady state concentration of methane in the atmosphere a) in Mt and b) in ppm? (The total mass of the atmosphere is 5.1 × 1018 kg and the average molar mass is 29.0 g/mol.)

Reference no: EM131183576

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