Difference between revisions of "PM2.5 concentration from bus traffic in Helsinki in 2020"
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[[category:variables]][[category:Kuopio Risk Assessment Workshop 2008]] | [[category:variables]][[category:Kuopio Risk Assessment Workshop 2008]] | ||
== Scope == | == Scope == | ||
| − | * | + | * Spatial limits: Helsinki metropolitan area |
| − | * | + | * Temporal limits: year 2020 |
| − | * | + | * Type of pollutant: primary PM2.5 |
| − | * | + | * Source of pollutant: bus traffic |
== Definition == | == Definition == | ||
Revision as of 16:14, 20 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 the average bus related primary PM2.5 in 2020 in Helsinki area
