Difference between revisions of "Primary PM2.5 emissions from bus traffic in Helsinki Metropolitan Area"
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'''Scope'''<br>Mass PM2.5 emissions from the bus fleet per year in Helsinki Metropolitan Area (HMA). | '''Scope'''<br>Mass PM2.5 emissions from the bus fleet per year in Helsinki Metropolitan Area (HMA). | ||
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== Definition == | == Definition == | ||
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=== Causality === | === Causality === | ||
List of parents: | List of parents: | ||
+ | *[[Bus engine technology]] | ||
− | + | === Data === | |
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List of data files or sources: | List of data files or sources: | ||
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+ | Data tables can be found from the analytica model: [[Image:Gasbus model 01.ANA]] | ||
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* Bus kilometres travelled: 77000000 km <ref> 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)</ref> | * Bus kilometres travelled: 77000000 km <ref> 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)</ref> | ||
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* Relative bus activity: trips per day (relative to 1999) <ref>YTV, Helsinki Metropolitan Area Council. (1999). Helsinki Metropolitan Area Transport System Plan PLJ 1998. Helsinki Metropolitan Area Council Publication Series A 1999:4</ref> | * Relative bus activity: trips per day (relative to 1999) <ref>YTV, Helsinki Metropolitan Area Council. (1999). Helsinki Metropolitan Area Transport System Plan PLJ 1998. Helsinki Metropolitan Area Council Publication Series A 1999:4</ref> | ||
− | + | **Bus activity | |
* Relative emission factors (relative to current fleet) <ref>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)</ref> | * Relative emission factors (relative to current fleet) <ref>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)</ref> | ||
+ | **Total emission from buses kg/a <ref>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).</ref> | ||
+ | *Emission factor: 0.321 g/km <ref>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).</ref> | ||
+ | *Relative emission factor uncertainty (for diesel with filter and natural gas, based on author judgement) | ||
=== Formula === | === Formula === | ||
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a:=a*Relative_emission_f2; | a:=a*Relative_emission_f2; | ||
a*Rel_bus_activity</anacode> | a*Rel_bus_activity</anacode> | ||
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+ | The complete formula can be found from the analytica model: [[Image:Gasbus model 01.ANA]] | ||
+ | |||
=== Unit === | === Unit === |
Revision as of 13:59, 19 February 2008
Scope
Mass PM2.5 emissions from the bus fleet per year in Helsinki Metropolitan Area (HMA).
Definition
Causality
List of parents:
Data
List of data files or sources:
Data tables can be found from the analytica model: File:Gasbus model 01.ANA
- Bus kilometres travelled: 77000000 km [1]
- Relative bus activity: trips per day (relative to 1999) [2]
- Bus activity
- Relative emission factors (relative to current fleet) [3]
- Total emission from buses kg/a [4]
- Emission factor: 0.321 g/km [5]
- Relative emission factor uncertainty (for diesel with filter and natural gas, based on author judgement)
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>
The complete formula can be found from the analytica model: File:Gasbus model 01.ANA
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)
- ↑ 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). 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).