PM2.5 concentration from bus traffic in Helsinki in 2020
From Testiwiki
Scope
- Spatial limits: Helsinki metropolitan area
- Temporal limits: year 2020
- Type of pollutant: primary PM2.5
- Source of pollutant: bus traffic
Definition
Causality
List of parents:
Data
List of data files or sources:
- Database from EXPOLIS study (1996-1997) - individual measurements of total outdoor PM exposure
- Database from ULTRA study - fixed monitoring sites
Formula
Total PM2.5 exposure/concentration was used as the starting point for the calculations of PM2.5 due to bus traffic, subtracting the contributions from other sources.
E(bus) = (Ec-Elrt)/f(tr)*f(bus)
fi = (Emi * wfi)/Sum(Emi*wfi)
Unit
ug/m3
Result
estimation of the average bus related primary PM2.5 in 2020 in Helsinki area
