Climate impact of beef: an analysis considering multiple time scales and production methods without use of global warming potentials

  title={Climate impact of beef: an analysis considering multiple time scales and production methods without use of global warming potentials},
  author={Raymond T. Pierrehumbert and Gil Eshel},
  journal={Environmental Research Letters},
An analysis of the climate impact of various forms of beef production is carried out, with a particular eye to the comparison between systems relying primarily on grasses grown in pasture (‘grass-fed’ or ‘pastured’ beef) and systems involving substantial use of manufactured feed requiring significant external inputs in the form of synthetic fertilizer and mechanized agriculture (‘feedlot’ beef). The climate impact is evaluated without employing metrics such as CO 2 e ?> or global warming… 

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