Methodologies for estimating disaggregated anthropogenic emissions - Application to a coastal Mediterranean region of Spain

Regional estimates of both anthropogenic and biogenic emissions are importa nt inputs for models of atmospheric chemistry. A disaggregated emissions in ventory of all relevant pollutants for an area of 100 x 100 km(2) centered in Burriana (Castellon, Spain) has been worked out. Time and spatial resolu tions were hourly and 1 x 1 km(2), respectively. Estimates were made for al l relevant sources of anthropogenic emissions. The pollutants considered we re SO2, NOx, NMVOCs (nonmethane volatile organic compounds), CH4, CO, CO2, N2O, and NH3. Thus, the emissions inventory includes up to 18 different NMV OCs. Emissions were computed for a typical sunny workday in June when stron g photochemical activity could be expected. A "top-down" methodology was applied, taking as a starting point official a nnual and provincial estimates based on CORINAIR emission factors. This pro cedure is a very useful tool, particularly for those cases where a lack of sufficient local detailed information about the main emission-generating ac tivities, such as road traffic, makes the use of a "bottom-up" approximatio n inadvisable. Moreover, updating these emission inventories is easier and they could be used to evaluate the impact of possible abatement strategies.