Atmospheric methane | methane greenhouse gas
Methane presentinEarths atmosphereThisarticlesfactualaccuracymaybecompromisedduetoout-of-dateinformation.Thereasongivenis:Newresultsshowthatanthropogenicemissionswereunderestimated,andnaturalemissionofmethaneisanorderofmagnitudelowerthanpreviouslythought.Relevantdiscussionmaybefoundonthetalkpage.Pleasehelpupdatethisarticletoreflectrecenteventsornewlyavailableinformation.(February2020)AtmosphericmethaneisthemethanepresentinEarthsatmosphere.[3]Atmosphericmethaneconcentrationsareofinterestbecau...
Methane present in Earths atmosphere
This articles factual accuracy may be compromised due to out-of-date information. The reason given is: New results show that anthropogenic emissions were underestimated, and natural emission of methane is an order of magnitude lower than previously thought. Relevant discussion may be found on the talk page. Please help update this article to reflect recent events or newly available information. (February 2020)Atmospheric methane is the methane present in Earths atmosphere.[3] Atmospheric methane concentrations are of interest because it is one of the most potent greenhouse gases in Earths atmosphere. Atmospheric methane is rising.[4]
The 20-year global warming potential of methane is 84.[5][6] That is, over a 20-year period, it traps 84 times more heat per mass unit than carbon dioxide (CO2) and 105 times the effect when accounting for aerosol interactions.[7] Global methane concentrations rose from 722 parts per billion (ppb) in ...