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sector:energy:fuel_combustion:transport:railways:start [2025/03/28 08:44] – [Discussion of emission trends] kotzullasector:energy:fuel_combustion:transport:railways:start [2025/04/16 21:11] (current) – kotzulla
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 ====== 1.A.3.c - Transport: Railways ====== ====== 1.A.3.c - Transport: Railways ======
 +
 +<WRAP center round download right 20%>
 +{{sector:energy:fuel_combustion:transport:railways:iir-data_1.a.3.c_1990-2023_public.xlsx | NFR-specific inventory data }} 
 +</WRAP>
  
 ===== Short description ===== ===== Short description =====
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 In addition, rather small quantities of //solid fuels// are used for historical steam engines vehicles operated mostly for tourism and exhibition purposes. Official fuel delivery data are available for lignite, through 2002, and for hard coal, through 2000 only. Therefore, in order to complete these time series, operator surveys were carried out in 2012 [(HEDEL2012)], 2016 [(ILLICHMANN2016)] and 2021 [(HASENBALG2021)]. During these surveys, questionnaires were provided to any known operator of historical steam engines in Germany. Here, due to limited data archiving, nearly complete data could only be gained for years as of 2005 and for the main operators only. For earlier years and a variety of smaller operators, conservative gap filling was applied.  In addition, rather small quantities of //solid fuels// are used for historical steam engines vehicles operated mostly for tourism and exhibition purposes. Official fuel delivery data are available for lignite, through 2002, and for hard coal, through 2000 only. Therefore, in order to complete these time series, operator surveys were carried out in 2012 [(HEDEL2012)], 2016 [(ILLICHMANN2016)] and 2021 [(HASENBALG2021)]. During these surveys, questionnaires were provided to any known operator of historical steam engines in Germany. Here, due to limited data archiving, nearly complete data could only be gained for years as of 2005 and for the main operators only. For earlier years and a variety of smaller operators, conservative gap filling was applied. 
 +\\
  
 __Table 1: Overview of activity-data sources for domestic fuel sales to railway operators__ __Table 1: Overview of activity-data sources for domestic fuel sales to railway operators__
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 | transport performance data                                                  | in Mio ptkm (performance-ton-kilometers) derived from the TREMOD model                                                                                        | | transport performance data                                                  | in Mio ptkm (performance-ton-kilometers) derived from the TREMOD model                                                                                        |
  
 +\\
 __Table 2: Annual fuel consumption in German railways, in terajoules__ __Table 2: Annual fuel consumption in German railways, in terajoules__
 |                         ^  1990   ^  1995   ^  2000   ^  2005   ^  2010   ^  2015   ^  2016   ^  2017   ^  2018   ^  2019   ^  2020   ^  2021   ^  2022   ^  2023   ^ |                         ^  1990   ^  1995   ^  2000   ^  2005   ^  2010   ^  2015   ^  2016   ^  2017   ^  2018   ^  2019   ^  2020   ^  2021   ^  2022   ^  2023   ^
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 The use of other fuels – such as vegetable oils or gas – in private narrow-gauge railway vehicles has not been included to date and may still be considered negligible.  The use of other fuels – such as vegetable oils or gas – in private narrow-gauge railway vehicles has not been included to date and may still be considered negligible. 
  
-{{ :sector:energy:fuel_combustion:transport:railways:1a3c_ad_liquid.png?702 |Annual energy input from liquid fuels }} +{{:sector:energy:fuel_combustion:transport:railways:1a3c_ad_liquid.png?800|Annual energy input from liquid fuels}} 
-{{ :sector:energy:fuel_combustion:transport:railways:1a3c_ad_solid.png?702 |Annual energy input from solid fuels }} +{{:sector:energy:fuel_combustion:transport:railways:1a3c_ad_solid.png?800 |Annual energy input from solid fuels}} 
-{{ :sector:energy:fuel_combustion:transport:railways:1a3c_ad(km).png?702 |Annual mileage in Mio kilometers and for both diesel and electric traction }} + 
-    +\\    
 __Table 3: Annual transport performance by mode of traction, in Mio tkm (ton-kilometers)__ __Table 3: Annual transport performance by mode of traction, in Mio tkm (ton-kilometers)__
 |               ^  1990    ^  1995    ^  2000    ^  2005    ^  2010    ^  2015    ^  2016    ^  2017    ^  2018    ^  2019    ^  2020    ^  2021    ^  2022    ^  2023    ^ |               ^  1990    ^  1995    ^  2000    ^  2005    ^  2010    ^  2015    ^  2016    ^  2017    ^  2018    ^  2019    ^  2020    ^  2021    ^  2022    ^  2023    ^
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 \\ \\
  
-Transport performance showed only a moderate pandemic-related decrease in 2020 and has fully recovered in 2021 and 2022.+{{:sector:energy:fuel_combustion:transport:railways:1a3c_ad(km).png?800| Annual mileage in Mio kilometers and for both diesel and electric traction}}
  
 +
 +Transport performance showed only a moderate pandemic-related decrease in 2020 and has fully recovered in 2021 and 2022.
  
 Regarding particulate-matter and heavy-metal emissions from **abrasion and wear of contact line, braking systems, tyres on rails**, annual transport performances of railway vehicles with electrical and Diesel traction derived from Knörr et al. (2024a) [(KNOERR2024a)] are applied as activity data.  Regarding particulate-matter and heavy-metal emissions from **abrasion and wear of contact line, braking systems, tyres on rails**, annual transport performances of railway vehicles with electrical and Diesel traction derived from Knörr et al. (2024a) [(KNOERR2024a)] are applied as activity data. 
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 Therefore, for the **main pollutants**, **carbon monoxide**, **particulate matter** and **PAHs**, emission trends show remarkable jumps especially after 1995 that result from the significantly higher amounts of solid fuels used. Therefore, for the **main pollutants**, **carbon monoxide**, **particulate matter** and **PAHs**, emission trends show remarkable jumps especially after 1995 that result from the significantly higher amounts of solid fuels used.
  
-{{:sector:energy:fuel_combustion:transport:railways:1a3c_em_nh3.png?800 |Annual ammonia emissions from railways}} +{{ :sector:energy:fuel_combustion:transport:railways:1a3c_em_nh3.png?800 |Annual ammonia emissions from railways }} 
-{{:sector:energy:fuel_combustion:transport:railways:1a3c_em_nox.png?800 |Annual notrogen oxides emissions from railways}}+{{ :sector:energy:fuel_combustion:transport:railways:1a3c_em_nox.png?800 |Annual notrogen oxides emissions from railways }}
  
 +
 +\\
 For all fractions of **particulate matter**, the majority of emissions generally result from abrasion and wear and the combustion of diesel fuels. Additional jumps in the over-all trend result from the use of lignite briquettes (1996-2001). Here, as the EF(BC) for fuel combustion are estimated via fractions provided in [(EMEPEEA2019)], black carbon emissions follow the corresponding emissions of PM<sub>2.5</sub>.  For all fractions of **particulate matter**, the majority of emissions generally result from abrasion and wear and the combustion of diesel fuels. Additional jumps in the over-all trend result from the use of lignite briquettes (1996-2001). Here, as the EF(BC) for fuel combustion are estimated via fractions provided in [(EMEPEEA2019)], black carbon emissions follow the corresponding emissions of PM<sub>2.5</sub>. 
  
-{{:sector:energy:fuel_combustion:transport:railways:1a3c_em_pm.png?800 |Annual particulate matter emissions from railways}} +{{ :sector:energy:fuel_combustion:transport:railways:1a3c_em_pm.png?800 |Annual particulate matter emissions from railways }} 
-{{:sector:energy:fuel_combustion:transport:railways:1a3c_em_pm10.png?800 |Annual PM10 emissions from railways}} +{{ :sector:energy:fuel_combustion:transport:railways:1a3c_em_pm10.png?800 |Annual PM10 emissions from railways }} 
 +\\
 Due to fuel-sulphur legislation, the trend of **sulphur dioxide** emissions follows not only the trend in fuel consumption but also reflects the impact of regulated fuel-qualities. Due to fuel-sulphur legislation, the trend of **sulphur dioxide** emissions follows not only the trend in fuel consumption but also reflects the impact of regulated fuel-qualities.
 For the years as of 2005, sulphur emissions from diesel combustion have decreased so strongly, that the over-all trend shows a slight increase again due to the now dominating contribution of sulphur from the use of solid fuels. For the years as of 2005, sulphur emissions from diesel combustion have decreased so strongly, that the over-all trend shows a slight increase again due to the now dominating contribution of sulphur from the use of solid fuels.
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 {{ :sector:energy:fuel_combustion:transport:railways:1a3c_em_so2.png?800 |Annual sulphur oxides emissions from railways}} {{ :sector:energy:fuel_combustion:transport:railways:1a3c_em_so2.png?800 |Annual sulphur oxides emissions from railways}}
  
 +\\
 Regarding **heavy metals**, emissions from combustion of diesel oil and from abrasion and wear are estimated from tier1 default emission factors.  Regarding **heavy metals**, emissions from combustion of diesel oil and from abrasion and wear are estimated from tier1 default emission factors. 
 Therefore, the emission trends reflect the development of diesel use and - for copper, chromium and nickel emissions resulting from the abrasion & wear of contact line and braking systems - the annual transport performance (see description of activity data above). Therefore, the emission trends reflect the development of diesel use and - for copper, chromium and nickel emissions resulting from the abrasion & wear of contact line and braking systems - the annual transport performance (see description of activity data above).
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 ===== Recalculations ===== ===== Recalculations =====
  
-**Activity data** have been recalculated widely due to the revision of the National Energy Balances (NEB) 2003 to 2021. In addition, for 1990, the (erroneous) value applied so far has been replaced with the original NEB value.+**Activity data** have been recalculated only due to the finalization of the National Energy Balances 2022. 
  
-__Table 5: Revised fuel consumption data, in terajoule__ +__Table 5: Revised fuel consumption data 2022, in terajoule__ 
-|                      ^  1990   ^  1995   ^  2000   ^  2005   ^  2010   ^  2015   ^  2016   ^  2017   ^  2018   ^  2019   ^  2020   ^  2021   ^  2022   ^ +|                      ^  DIESEL OIL  ^ BIODIESEL  ^ RAW LIGNITE  ^ LIGN. BRIQU.  ^ COKE OVEN COKE  ^ BITUMIN. COAL  |   | **TOTAL**  | 
-^ current submission   |  41,381 |  32,681 |  26,065 |  19,594 |  15,934 |  14,411 |  14,883 |  12,331 |  10,324 |  11,720 |  11,972 |  12,175 |  11,536 | +^ current submission   |       10.482 |  727       |  0           |  1.15         |  0.35           |  325           |   ^ 11,536     ^ 
-^ previous submission  |  41,381 |  32,681 |  26,065 |  19,594 |  15,934 |  14,411 |  14,883 |  12,331 |  10,324 |  11,720 |  11,972 |  12,175 |  11,518 | +^ previous submission  |       10.464 |  727       |  0           |  1.15         |  0.35           |  325           |   ^ 11,518     ^ 
-^ absolute change      |    0.00 |    0.07 |    0.00 |    0.00 |    0.00 |    0.00 |    0.00 |    0.00 |    0.00 |    0.00 |    0.00 |    0.00 |    18.2 | +^ absolute change      |         18.2 |  0.01      |  0.00        |  0.00         |  0.00           |  0.00          |   ^ 18.2       ^ 
-^ relative change      |   0.00% |   0.00% |   0.00% |   0.00% |   0.00% |   0.00% |   0.00% |   0.00% |   0.00% |   0.00% |   0.00% |   0.00% |   0.16% |+^ relative change      |        0.17% |  0.002%    |  0.00%       |  0.00%        |  0.00%          |  0.00%         |   ^ 0.16%      ^
 \\ \\
  
-Furthermore, due to the routine revision of the TREMOD model [(KNOERR2023a)], tier2 **emission factors** changed for recent years. +Furthermore, due to the routine revision of the TREMOD model [(KNOERR2024a)], tier2 **emission factors** changed for recent years. 
  
-In addition, abrasive PM<sub>10</sub> emissions as derived from a model hosted at the DB AG have been revised widely due to most recent results from a measurement campaign and for all years:+In addition, abrasive PM<sub>10</sub> emissions as derived from a model hosted at the DB AG have been revised. Here, especially the emission factors for PM<sub>10</sub> emissions from the abrasion of tyre on rail and gray cast iron brakes were reduced significantly due to most recent results from a measurement campaign [(DZSF2025)] and for all years:
  
 __Table 6: Revised abrasive PM<sub>10</sub> emissions, from DB AG, in [kt]__ __Table 6: Revised abrasive PM<sub>10</sub> emissions, from DB AG, in [kt]__
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 ^ relative change      |  -47.1% |  -51.8% |  -55.8% |  -56.9% |  -57.3% |  -55.5% |  -55.6% |  -56.9% |  -56.2% |  -59.8% |  -64.4% |  -63.9% | ^ relative change      |  -47.1% |  -51.8% |  -55.8% |  -56.9% |  -57.3% |  -55.5% |  -55.6% |  -56.9% |  -56.2% |  -59.8% |  -64.4% |  -63.9% |
  
-All abrasive particulate matter and heavy metal emissions estimated based on these original PM<sub>10</sub> emissions were revised accordingly. +All abrasive particulate matter and heavy metal (Cu, Cr, Ni) emissions estimated based on these original PM<sub>10</sub> emissions were revised accordingly. 
  
 <WRAP center round info 65%> <WRAP center round info 65%>
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 Energieverbrauch und Schadstoffemissionen des motorisierten Verkehrs in Deutschland 1960-2035, sowie TREMOD, im Auftrag des Umweltbundesamtes, Heidelberg [u.a.]:  Energieverbrauch und Schadstoffemissionen des motorisierten Verkehrs in Deutschland 1960-2035, sowie TREMOD, im Auftrag des Umweltbundesamtes, Heidelberg [u.a.]: 
 Ifeu Institut für Energie- und Umweltforschung Heidelberg GmbH, Heidelberg & Berlin, 2024.)] Ifeu Institut für Energie- und Umweltforschung Heidelberg GmbH, Heidelberg & Berlin, 2024.)]
-[(EMEPEEA2019> EMEP/EEA (2019): EMEP/EEA air pollutant emission inventory guidebook 2019, https://www.eea.europa.eu/publications/emep-eea-guidebook-2019/part-b-sectoral-guidance-chapters/1-energy/1-a-combustion/1-a-3-c-railways/view; Copenhagen, 2019.)] 
-[(RENTZ2008> Rentz et al. (2008): Nationaler Durchführungsplan unter dem Stockholmer Abkommen zu persistenten organischen Schadstoffen (POPs), im Auftrag des Umweltbundesamtes, FKZ 205 67 444, UBA Texte | 01/2008, January 2008 - URL: http://www.umweltbundesamt.de/en/publikationen/nationaler-durchfuehrungsplan-unter-stockholmer )] 
 [(KNOERR2009> Knörr et al. (2009): Knörr, W., Heldstab, J., & Kasser, F.: Ermittlung der Unsicherheiten der mit den Modellen TREMOD und TREMOD-MM berechneten Luftschadstoffemissionen des landgebundenen Verkehrs in Deutschland; final report; URL: https://www.umweltbundesamt.de/sites/default/files/medien/461/publikationen/3937.pdf, FKZ 360 16 023, Heidelberg & Zürich, 2009.)] [(KNOERR2009> Knörr et al. (2009): Knörr, W., Heldstab, J., & Kasser, F.: Ermittlung der Unsicherheiten der mit den Modellen TREMOD und TREMOD-MM berechneten Luftschadstoffemissionen des landgebundenen Verkehrs in Deutschland; final report; URL: https://www.umweltbundesamt.de/sites/default/files/medien/461/publikationen/3937.pdf, FKZ 360 16 023, Heidelberg & Zürich, 2009.)]
 +
 +[(EMEPEEA2019> EMEP/EEA (2019): EMEP/EEA air pollutant emission inventory guidebook 2019, https://www.eea.europa.eu/publications/emep-eea-guidebook-2019/part-b-sectoral-guidance-chapters/1-energy/1-a-combustion/1-a-3-c-railways/view; Copenhagen, 2019.)]
 +[(RENTZ2008> Rentz et al. (2008): Otto Rentz, O., Karl, U., Haase, M., Koch, M., Deutsch-Französisches Institut für Umweltforschung,
 +Universität Karlsruhe (TH): Nationaler Durchführungsplan unter dem Stockholmer Abkommen zu persistenten organischen Schadstoffen (POPs), 
 +im Auftrag des Umweltbundesamtes, FKZ 205 67 444, UBA Texte 01/2008, http://www.umweltbundesamt.de/en/publikationen/nationaler-durchfuehrungsplan-unter-stockholmer; Dessau-Roßlau, 2008)]
 +
 +[(DZSF2025> DZSF (Deutsches Zentrum für Schienenverkehrsforschung / German Centre for Rail Traffic Research) research project on "Size-specific and spatial distribution of traffic-related abrasion and particulate emissions" (Größenspezifische und räumliche Verteilung von verkehrsbedingten Abrieben und partikulären Emissionen) https://www.dzsf.bund.de/SharedDocs/Standardartikel/DZSF/Projekte/Projekt_44_Abriebe_Emissionen.html )]