Social and Geographical Distribution of Mobility-Related Greenhouse Gas Emissions in Poznań and Tri-City Functional Urban Areas
27 feb 2024
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Publicado en línea: 27 feb 2024
Páginas: 235 - 255
Recibido: 01 ago 2023
DOI: https://doi.org/10.14746/quageo-2024-0014
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© 2024 Michał Czepkiewicz et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
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Global Moran’s I of emission levels_
Study area | Travel scope | Moran’s |
Pseudo p-value | N |
---|---|---|---|---|
Tri-city | Short-distance | 0.064 | 0.001 | 1978 |
Long-distance (all) | 0.010 | 0.039 | 1917 | |
Long-distance (air) | 0.014 | 0.016 | 1917 | |
Poznań | Short-distance | 0.126 | 0.001 | 1824 |
Long-distance (all) | 0.092 | 0.001 | 1800 | |
Long-distance (air) | 0.065 | 0.001 | 1800 |
Spearman correlation coefficients (ρ) between built environment characteristics and emissions from long- and short-distance travel_
Travel scope | Area | Distance to the closest city centre | Population density | Basic service density | Street intersection density |
---|---|---|---|---|---|
Short-distance travel emissions | Poznań | 0.23 | -0.25 | -0.28 | -0.24 |
Tri-city | 0.17 | -0.10 | -0.20 | -0.17 | |
Long-distance travel emissions | Poznań | -0.10 | 0.09 | 0.07 | 0.09 |
Tri-city | -0.03 | 0.03 | 0.01 | 0.02 |
Estimation of yearly travel frequency based on survey answers_
Answer options | Yearly trip number |
---|---|
Less than once a month | 10 |
1-3 times a month | 24 |
1-2 times a week | 72 |
3-4 times a week | 168 |
5 times a week or more | 240 |
Estimation of trip distance based on distance bands_
Distance band [km] | Numeric value |
---|---|
50-200 | 125 |
201-500 | 350 |
501-1000 | 750 |
1001-3000 | 2000 |
>3000 | 4000 |
Emission factors for short-distance travel modes_
Travel mode | Vehicle type | Emission coefficient | Fuel use | Fuel WTW carbon intensity | Electric energy use | Electric energy carbon intensity | Average load | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
[kg CO2 · Pkm-1] | [1.·100 km-1 | Source | [kg CO2·1-1] | Source | [kWh·100 km-1] | Source | [kg CO2·kWh-1] | Source | [Pax] | Source | Assumptions | ||
Private car | Gasoline ICEV | 0.164 | 7.16 | Survey average weight-ed by travel distance | 3.016 | ( |
1.64 | Survey answers | |||||
Diesel ICEV | 0.197 | 7.08 | 3.484 | ||||||||||
LPG ICEV | 0.116 | 7.64 | 1.876 | ||||||||||
HEV | 0.145 | 6.65 | 3.016 | ||||||||||
PHEV | 0.142 | 6.68 | 3.016 | 18.2 | Survey average weight-ed by travel distance | 0.792 | (KO-BiZE 2022), adjusted using |
Share of electric drive: 50% | |||||
BEV | 0.092 | 17.3 | 0.792 | ||||||||||
Weighted average | 0.169 | Weighted by travel distance | |||||||||||
Tram or bus | Diesel bus | 0.081 | 42 | MPK | 3.484 | ( |
18 | MPK | Share of electric buses in bus perfor-mance: 8% Share of buses in transport perfor-mance: 50% | ||||
Electric bus | 0.067 | 152 | MPK | 0.792 | MPK | ||||||||
Tram | 0.064 | 289 | ( |
0.792 | 36 | ( |
|||||||
Weighted average | 0.072 | ||||||||||||
Urban train | Urban train (Poznań) | 0.084 | 740 | ( |
0.792 | 70 | UTK | EN57 train Average load from KW and Polregio | |||||
Urban train (Tri-city) | 0.039 | 740 | 0.792 | 150 | UTK | EN57 train average load in SKM and PKM | |||||||
E-bike or e-scooter | E-bike | 0.005 | 0.6 | ( |
0.792 | 1 | Share of e-bikes: 50% | ||||||
E-scooter | 0.011 | 1.4 | 0.792 | 1 | |||||||||
Weighted average | 0.008 |
Emission factors for long-distance travel modes (data of the UTK 2023 for Polregio and PKP Intercity railway carriers)_
Travel mode | Vehicle type | Distance band(s) | CO2 emission coefficient | non-CO2 emission coefficient | Average load or utility factor | Other assumptions and sources | |||||
---|---|---|---|---|---|---|---|---|---|---|---|
[kg CO2 · Pkm-1] | [kg CO2 · vkm-1] | Source | [kg CO2eq · pkm-1] | RFI factor | [pax] | [%] | Source | ||||
Car | All | 0.124 | 0.223 | ( |
NA | 1.8 | NA | ||||
Train | Average | 50-200 km | 0.068 | Own estimation based on fuel and energy consumption in commonly used trains | 73 | UTK - Polregio | 75% share in performance, EN57 | ||||
Diesel | 0.031 | 5.859 | 25% share in performance; railcar - 65.8 l/100 km of diesel fuel | ||||||||
Electric | 0.080 | 2.294 | Polish electricity, |
||||||||
Electric | 201-1000 km | 0.053 | 11.084 | 209 | UTK - PKP Intercity | ||||||
Electric | >1001 km | 0.022 | 4.676 | European electric-ity ( |
|||||||
Ferry | 50-200 km | 0.415 | ( |
||||||||
>200 km | 0.238 | ||||||||||
Bus | 50-1000 km | 0.073 | ( |
||||||||
>1001 km | 0.067 | ( |
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Plane | 50-200 km | 0.699 | Own estima-tions based on Knorr and Huttermann (2016) | 0.000 | 1.0 | 71 | Fuel use per seat-km from Knorr and Huttermann (2016) Kerosene WTW emissions from |
||||
201-500 km | 0.348 | 0.000 | 1.0 | 71 | |||||||
501-1000 km | 0.209 | 0.119 | 1.6 | 75 | |||||||
1001-3000 km | 0.151 | 0.143 | 2.0 | 75 | |||||||
>3000 km | 0.133 | 0.213 | 2.8 | 80 |