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    How do you convert ch4 PPM to CO2e to Metric tons

  • #2
    Originally posted by TwoDogs View Post
    How do you convert ch4 PPM to CO2e to Metric tons
    A couple of issues make it impossible to answer your question.

    Ppm is a concentration, so a tiny bit of methane is mixed in a lot of air. We would need to know the total mass of the methane. At the very minimum we would need the total mass or volume, pressure, and temperature of the air in which the ppm of methane is mixed, and the ppm value.

    Second issue. Does it stay methane? Methane is a worse greenhouse gas than CO2 by a large factor. I've seen factors claimed from 26X to 80X depending on model. If it is burnt, one mole methane (16 g) becomes 44 g CO2, and some water vapor.

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