Layer 4: Stocks and flows
4.15. Emission to air
This includes all air pollutants and other emissions. There may be official authorities reporting on this, or you may have to gather relevant documents to be able to calculate this later. Take a good look at any burning of fossil fuels or biomass that takes place within the territory. Key sources of local emissions could come from: transportation, industry, construction, households (e.g. from heating), power generation (if this happens locally), waste (organic waste releasing methane). Be sure to look into carbon dioxide (CO₂), particulate matter (PM), nitric oxide and nitrogen dioxide (NOx), sulpher dioxide (SO₂), and volatile organic compounds (VOCs).