Emission Inventory - Compilation - Why: The Source Categories

Why: The Source Categories

To compile an emission inventory, all sources of the pollutants must be identified and quantified. Frequently used source categorisations are

  • those defined by the Intergovernmental Panel on Climate Change (IPCC) in the Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories, IPCC Good practice guidance and uncertainty management in national greenhouse gas inventories, IPCC Good practice guidance for land use, land use change and forestry and more recently the 2006 IPCC Guidelines for National Greenhouse Gas Inventories
  • those defined in the UNECE Convention on Long-Range Transboundary Air Pollution (LRTAP); recently the LRTAP Convention adopted a source categorisation that is largely consistent with those of IPCC, to replace the more technology oriented Standardized Nomenclature for Air Pollutants (SNAP) used until 2005.

Both source categorisations make a clear distinction between sources related to the combustion of (fossil) fuels and those that are not caused by combustion. In most cases the specific fuel combusted in the former is added to the source definition. Source categories include:

  1. Energy
    1. Fuel combustion
      1. Stationary combustion
        1. Industrial combustion
        2. Residential heating
      2. Mobile combustion (transport)
    2. Fugitive emissions from (fossil) fuel use
  2. Industrial Processes
  3. Solvent and other product use
  4. Agriculture
  5. LULUCF (Land Use, Land Use Change and Forestry)
  6. Waste

Many researchers and research projects use their own source classifications, sometimes based on either the IPCC or the SNAP source categories, but in most cases the source categories listed above will be included.

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