Difference between revisions of "PM2.5 concentration from bus traffic in Helsinki in 2020"
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E(bus) = (Ec-Elrt)/f(tr).f(bus) | E(bus) = (Ec-Elrt)/f(tr).f(bus) | ||
| − | fi = (Emi * wfi)Sum(Emi*wfi) | + | fi = (Emi * wfi)/Sum(Emi*wfi) |
=== Unit === | === Unit === | ||
Revision as of 12:52, 19 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:
- PM2.5 emissions from bus traffic
Data
List of data files or sources:
- Database from EXPOLIS study (1996-1997)
- Database from ULTRA study
Formula
E(bus) = (Ec-Elrt)/f(tr).f(bus)
fi = (Emi * wfi)/Sum(Emi*wfi)
Unit
ug/m3
Result
estimation of average bus fraction of PM2.5 in 2020 in Helsinki area
