Skip to main content

Table 2 CO2, CH4 and N2O fluxes and their overall global warming potential (Pg CO2 eq/year) for major biome types in North America during the recent decade

From: North American terrestrial CO2 uptake largely offset by CH4 and N2O emissions: toward a full accounting of the greenhouse gas budget

Variables Foresta Grassland Wetland Cropland Othersb North America
CO2 −0.69 −0.12 −0.31 −0.46 −0.27 −1.85
CH4 −0.04 −0.02 0.61 0.01 −0.04 0.52
N2O 0.25 0.11 0.07 0.23 0.15 0.81
Overall GWP −0.48 −0.02 0.37 −0.22 −0.16 −0.50
  1. aPart of forest is included in wetland as woody wetland. Biome-level GWP may not sum to the totals due to rounding
  2. bOthers include shrubland, tundra, desert, urban lawn and forest, and bare ground