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
Causality
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
- Bus km travelled
- Bus activity
- Relative emission factors
Data
List of data files or sources:
- Bus kilometres travelled: 77000000 km [1]
- Relative bus activity: trips per day (relative to 1999) [2]
- Relative emission factors (relative to current fleet) [3]
Formula
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>
Unit
Kg/year
Result
| Min | Mean | Max | Std. Dev. | 0.05 | 0.25 | 0.5 | 0.75 | 0.95 | |
| BAU A | 3.95E+04 | 3.95E+04 | 3.95E+04 | 0.01179 | 3.95E+04 | 3.95E+04 | 3.95E+04 | 3.95E+04 | 3.95E+04 |
| EURO 3 D3 | 1.96E+04 | 1.96E+04 | 1.96E+04 | 0.01235 | 1.96E+04 | 1.96E+04 | 1.96E+04 | 1.96E+04 | 1.96E+04 |
| CRT filter C | 6013 | 9956 | 1.39E+04 | 1626 | 7233 | 8790 | 9956 | 1.11E+04 | 1.27E+04 |
| Natural gas G31 | 4622 | 5763 | 6904 | 470.6 | 4975 | 5426 | 5763 | 6101 | 6551 |
- ↑ YTV, Helsinki Metropolitan Area Council. (1999). Vaihtoehtoisten polttoaineiden k‰yttˆmahdollisuudet joukkoliikenteess‰ p‰‰kaupunkiseudulla [The possibilities to use alternative fuels in public transport in the Helsinki metropolitan area]. Helsinki Metropolitan Area Council Publication Series B 1999:5 (in Finnish)
- ↑ YTV, Helsinki Metropolitan Area Council. (1999). Helsinki Metropolitan Area Transport System Plan PLJ 1998. Helsinki Metropolitan Area Council Publication Series A 1999:4
- ↑ YTV, Helsinki Metropolitan Area Council. (1999). Vaihtoehtoisten polttoaineiden k‰yttˆmahdollisuudet joukkoliikenteess‰ p‰‰kaupunkiseudulla [The possibilities to use alternative fuels in public transport in the Helsinki metropolitan area]. Helsinki Metropolitan Area Council Publication Series B 1999:5 (in Finnish)