The set of variation percentages that result from a hypothetic
scenario (in which the emissions of several sectors might suffer
changes) are necessary parameters to calculate the concentration of
pollutants in the modelled domain with the atmospheric dispersion
module. Moreover, applying a VP instead of absolute emissions
allows considering another BS without altering the rest of the
modules of AERIS. Any reductions in emissions were considered to
be uniform across sectors. It should be noted that the algorithm of
AERIS requires that the different VPs are provided by the user as a
requisite to execute the atmospheric dispersion module.