Difference between revisions of "PM2.5 concentration from bus traffic in Helsinki in 2020"
From Testiwiki
m (→Unit) |
m (→Result) |
||
| Line 33: | Line 33: | ||
== Result == | == Result == | ||
| − | + | Estimation of average bus-related primary PM2.5 in 2020 in Helsinki area | |
Revision as of 11:10, 21 February 2008
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 average bus-related primary PM2.5 in 2020 in Helsinki area
