A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by 13CH4

  title={A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by 13CH4},
  author={Hinrich Schaefer and S. Fletcher and C. Veidt and K. Lassey and G. Brailsford and T. Bromley and E. J. Dlugokencky and S. Michel and J. Miller and I. Levin and D. Lowe and R. Martin and B. Vaughn and J. White},
  pages={80 - 84}
  • Hinrich Schaefer, S. Fletcher, +11 authors J. White
  • Published 2016
  • Environmental Science, Medicine
  • Science
  • Getting a rise out of agriculture Methane, a powerful and important greenhouse gas, has been accumulating nearly uninterruptedly in the atmosphere for the past 200 years, with the exception of a mysterious plateau between 1999 and 2006. Schaefer et al. measured methane's carbon isotopic composition in samples collected over the past 35 years in order to constrain the cause of the pause. Lower thermogenic emissions or variations in the hydroxyldriven methane sink caused the plateau. Thermogenic… CONTINUE READING
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