Introduction 1.1 Methane in the Earth Atmosphere


    Methane (CH 4) constitutes the most abundant hydrocarbon trace gas in the Earth's atmosphere. Its present-day globally averaged concentration of around 1850 parts per billion per volume (ppbv) is more than double that estimated for pre-industrial times (e.g. Stocker et al., 2013). The role of methane in global climate change is the main reason for this high… (More)


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