Frequently Asked Questions

Basics

• How are the source categories and regions defined?
• How should I cite EDGAR data in my publication?
• Could you provide graphs of gridded maps to include in my publication?
• How about uncertainties in the EDGAR datasets?
• Why are the EDGAR data different from official national inventories?
• What is the difference between EDGAR inventories and GEIA inventories?
• What to do when I find caveats in the datasets that are not described in the EDGAR documentation?
• Could you provide a more detailed breakdown of the NMVOC Compound Groups?
• Are halocarbons included in the NMVOC Compound Groups?
• Could you provide the number of mole of emissions of the NMVOC Compound Groups equivalent to the emissions you provide in mass units?
• Why do you use the gridded population map compiled by Li?
• Why did you modify the Li map and use separate urban and rural population maps in EDGAR 3?

Sources

• Could you provide the international emissions from air transport?
• Could you provide the transport emissions separately for passenger and freight transport?
• The gridded emissions from road transport show per country a constant ratio between compounds. Didn't you use different emission factors for urban, rural and highway driving?
• What causes the differences in agricultural waste burning emissions in EDGAR and IPCC reports and other literature?
• What causes the differences in deforestation emissions in EDGAR and IPCC reports and other literature?

More details

• Can I get the complete database with all details?
• Could you provide the emissions from fossil fuel combustion per fuel type?
• Are there exceptions to this?
• Could you provide the underlying activity with which the emissions have been calculated?
• Could you provide the basic emission factors with which the emissions have been calculated?

More compounds, sources, years

• Could you also provide time series emissions and gridded emissions of CO, NOx, NMVOC and SO2 for years prior to 1990?
• When will you update the emissions to a more recent year, e.g. 2000?
• Could you add new compounds to the database?
• Are you planning to add new compounds to the database?
• Could you also provide the emissions from natural sources, such as from volcanoes or lightning?
• Could you provide emissions of primary aerosols (particulate matter, dust, etc.)?
• Could you also provide emissions data with isotopic information?
• Could you provide emissions of pesticides and other Persistent Organic Pollutants (POPs)?
• Could you provide the emissions on a finer grid, e.g. 0.5 x 0.5 degree, a resolution often used in landuse models or regional atmospheric chemistry models?
• Could EDGAR, in addition to the annual emissions, also provide time profiles, e.g. for seasonality or diurnal variation?