Greenhouse Gas (GHG) Emissions, sometimes referred to as carbon emissions, are the release of gases such as CO2, Methane (CH4), or Nitrous Oxide (N2O) that accelerate climate change.
Though most GHGs contain carbon, emissions of various chemicals – including water vapor – are categorized as GHGs because of their warming effects. Because different chemicals have different warming capacities, sometimes GHG emissions are counted by their CO2 equivalent warming (CO2e). For instance, one ton of Methane emissions would be equal to ~28 tons of CO2e over a 100-year time frame because it traps ~28 times more heat than CO2 over such time.
