Primary PM2.5 emissions from bus traffic in Helsinki Metropolitan Area

Scope
Mass PM2.5 emissions from the bus fleet per year in Helsinki Metropolitan Area (HMA). The variable describes

Definition

List of parents:

Emission factors
Bus traffic intensity (number of bus trips? km travelled?)
Travelling velocity
Temperature (other weather factors? - would this be a weather variable, a temperature variable, or not a variable?)
Engine type
Fuel type

From paper model

List of data files or sources:

Analytica_id:

<anacode>Var a:=bus_km*(emission_factor/1000); a:=a*Relative_emission_fa; a:=a*Relative_emission_f2; a*Rel_bus_activity</anacode>

Kg/year