- Joint Program Technical Note
We provide details on the development of greenhouse gas and other pollutant inventories for 1995 that are used in the MIT Emissions Prediction and Policy Analysis (EPPA) model. The 1995 inventories developed here are the basis for developing emissions coefficients (emissions per unit of economic activity by sector). For a variety of reasons that vary depending on the particular pollutant, we expect these coefficients to change over time. We provide details on the methods we used to estimate how these coefficients change over time. The greenhouse gases and pollutants discussed include: methane (CH4), nitrous oxide (N2O), perfluorocarbons (PFCs), hydrofluorocarbons (HFCs), sulfur hexafluoride (SF6), other nitrogen oxides (NOx) sulfur dioxide (SO2), carbon monoxide (CO), non-methane volatile organic carbon (NMVOC), black carbon (BC), organic carbon (OC), and ammonia (NH3). This technical note is aimed a documenting in detail the approaches used in developing emissions inventory to facilitate the process of updating and improving the accuracy of the inventory as data and measurement improve. There remain substantial uncertainties in even the current estimates of anthropogenic sources of many of these emissions.