CH4 Maps (CarbonTracker-CH4)
Column Average CH4 Daily average of the pressure-weighted mean mole fraction of methane simulated by CarbonTracker-CH4. Units are nanomoles of CH4 per mole of dry air (nmol mol-1), and the values are given by the color scale depicted under the graphic. Gradients in CH4 concentration are due to exchange between the atmosphere and the earth surface, including fossil fuel emissions, emissions from agriculture and waste, wildfire emissions, and emissions from wetlands. These gradients are subsequently transported by weather systems, even as they are gradually erased by atmospheric mixing.

Click here to see animations of simulated CarbonTracker CH4.