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. 2017 Feb 21;8:14383. doi: 10.1038/ncomms14383

Table 1. Global CH4 emissions diagnosed (wetlands and OH and stratospheric loss) or else prescribed within HadGEM2-ES climate-chemistry simulations.

  PI LGM
  Control Low-fire Standard Standard+LGM humans
Sources (TgCH4yr−1)
 Wetlands 138.2 96.8 96.8 96.8
 Wetlands+peatlands 138.2 80.5 80.5 80.5
 Biomass burning 14.0 1.4 9.2 11.6
 Oceans 15.0 12.1 12.1 12.1
 Termites 20.0 11.6 11.6 11.6
 Hydrates 10.0 0 0 0
 SUM 197.2 121.9 129.7 132.1
         
Sinks (TgCH4yr−1)
 Tropospheric OH loss 160 102
 Soil uptake 11 6
 Added stratospheric loss 21 12

Atmospheric loss terms are diagnosed within the low-fire emissions-driven simulation for consistency with the emissions listed. The LGM sum excludes the treatment of peatlands and is reduced by 16.3TgCH4yr−1 when they are considered.