Difference between revisions of "Primary PM2.5 emissions from bus traffic in Helsinki Metropolitan Area"
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=== Causality === | === Causality === | ||
List of parents: | List of parents: | ||
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* Bus km travelled | * Bus km travelled | ||
* Bus activity | * Bus activity | ||
| − | * | + | * Emission factors |
=== Data === | === Data === | ||
Revision as of 12:36, 19 February 2008
Scope
Mass PM2.5 emissions from the bus fleet per year in Helsinki Metropolitan Area (HMA).
The variable describes
Definition
Causality
List of parents:
- Bus km travelled
- Bus activity
- 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)
