1.A.3.b.v Fugitive Emissions in RT

Last updated on 10 Dec 2013 11:53 (cf. Authors)

Short description

In category 1.A.3.b v - Road Transport: Gasoline evaporation fugitive emissions from evaporation of gasoline from road vehicles are reported.

NFR-Code Name of Category Method AD EF Key Source for (by1)
1.A.3.b v Gasoline evaporation T1 NS CS NMVOC (T)

1 T = key source by Trend / L = key source by Level

Method

Activity data

Gasoline evaporation from road vehicles

Table: Annual amount of gasoline evaporated from road vehicles, [kt]

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
11.283 10.807 10.453 10.631 9.917 9.894 9.861 9.770 9.852 9.991
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
9.421 9.830 9.663 8.933 8.846 8.366 7.877 7.413 7.154 7.063
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
6.758 6,686

italic: recalculated compared to submission 2012

Table: Gasoline evaporation 2011 per vehicle layer, [kt]

Passenger cars Light duty vehicles Mopeds Motorcycles Sum 1.A.3.b v
Mitigation without with without with without without with with + without
Evaporated Gasoline 88 6,366 10 50 76 39 56 6,686

Emission factors

Emission factors used for 2011 emission estimates

Table: EF(NMVOC) 2011, [kg/t]

Passenger cars Light duty vehicles Mopeds Motorcycles
Mitigation without with without with without without with
Emission Factor 13.72 0.35 8.70 0.18 1.81 9.94 8.34

Trend discussion for Key Categories

NFR 1.A.3.b v - Gasoline evaporation is key source for emissions of

  • NMVOC regarding the emissions' declining trend.

Non-Methane Volatile Organic Compounds - NMVOC

(fugitive emissions only; no NMVOC emissions from fuel combustion included)

Since its maximum level of over 11 kilotonnes in 1990, the amount of evaporated gasoline is decreasing - and so are the related NMVOC emissions. The amounts of evaporated gasoline are connected directly with those of gasoline consumed. Here, the decrease becomes sharper from 2000 onwards following a growing switch from gasoline to diesel oil especially in passenger cars. Here, the annual amounts of NMVOC emissions from evaporation not only depend directly on the amount of evaporated gasoline but also on the number of vehicles equipped with mitigation technologies. Thus, the decrease is sharpest straight after 1990 and since then slowing down.

Recalculations

Recalculations were carried out due to a regular revision of the HBEFA (Handbook Emission Factors for Road Transport 3.1) and the TREMOD software.
Here, the by far biggest impact results from significantly changed emission factors and much smaller changes within the annual amounts of evaporated gasoline

Table: Revision of annual amount of evaporated gasoline

Unit 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
Submission 2013 [kt] 11,283 10,807 10,453 10,631 9,917 9,894 9,861 9,770 9,852 9,991
Submission 2012 [kt] 11,306 10,833 10,481 10,663 9,938 9,916 9,884 9,794 9,878 10,019
absolute change [kt] -23 -26 -28 -32 -21 -22 -23 -25 -26 -28
relative change [%] -0.2% -0.24 -0.27 -0.30 -0.21 -0.22 -0.24 -0.25 -0.27 -0.28
Unit 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Submission 2013 [kt] 9,421 9,830 9,663 8,933 8,846 8,366 7,877 7,413 7,154 7,063
Submission 2012 [kt] 9,448 9,860 9,693 8,963 8,877 8,395 7,907 7,441 7,181 7,089
absolute change [kt] -27 -30 -31 -30 -31 -29 -30 -28 -27 -26
relative change [%] -0.29 -0.31 -0.32 -0.33 -0.35 -0.35 -0.37 -0.37 -0.38 -0.37
Unit 2010
Submission 2013 [kt] 6,758
Submission 2012 [kt] 6,791
absolute change [kt] -33
relative change [%] -0.48

Here, changes in EF are displayed only for 1995 onward due to a separation into New and Old German Länder data from 1990 to 1994.

Table: Revision of EF(NMVOC) for mopeds

Unit 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Submission 2013 [kg/t] 2.19 2.30 2.30 2.17 2.28 2.34 2.22 2.43 2.25 2.14 2.09 1.98 1.95 1.88 1.81 1.82
Submission 2012 [kg/t] 2.60 2.76 2.75 2.54 2.68 2.77 2.60 2.90 2.63 2.50 2.43 2.29 2.23 2.14 2.08 2.06
absolute change [kg/t] -0.42 -0.46 -0.45 -0.37 -0.40 -0.43 -0.37 -0.47 -0.38 -0.35 -0.34 -0.31 -0.28 -0.27 -0.27 -0.24
relative change [%] -15.99 -16.68 -16.23 -14.61 -14.96 -15.57 -14.41 -16.19 -14.46 -14.16 -14.14 -13.64 -12.63 -12.58 -13.04 -11.71

Table: Revision of EF(NMVOC) for LDV without mitigation technology

Unit 1995 2000 2005 2006 2007 2008 2009 2010
Submission 2013 [kg/t] 10.84 9.45 9.11 8.76 8.70 8.63 8.77 8.76
Submission 2012 [kg/t] 10.84 9.45 9.11 8.86 8.83 8.77 8.92 8.91
absolute change [kg/t] 0.00 0.00 0.00 -0.10 -0.13 -0.15 -0.15 -0.15
relative change [%] 0.00 0.00 0.00 -1.12 -1.45 -1.68 -1.73 -1.66

Table: Revision of EF(NMVOC) for LDV with mitigation technology

Unit 1995 2000 2005 2006 2007 2008 2009 2010
Submission 2013 [kg/t] 0.20 0.19 0.18 0.18 0.18 0.18 0.18 0.18
Submission 2012 [kg/t] 0.20 0.19 0.18 0.18 0.17 0.17 0.17 0.18
absolute change [kg/t] 0.00 0.00 0.00 0.01 0.01 0.01 0.01 0.01
relative change [%] 0.00 0.00 0.00 3.14 3.42 3.88 4.05 4.38

Table: Revision of EF(NMVOC) for PC without mitigation technology

Unit 1995 2000 2005 2006 2007 2008 2009 2010
Submission 2013 [kg/t] 13.80 14.37 13.61 13.54 13.77 13.57 13.45 13.56
Submission 2012 [kg/t] 13.80 14.37 13.60 13.54 13.76 13.56 13.44 13.56
absolute change [kg/t] 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.00
relative change [%] 0.00 0.00 0.01 0.00 0.00 0.05 0.08 -0.01

Table: Revision of EF(NMVOC) for PC with mitigation technology

Unit 1995 2000 2005 2006 2007 2008 2009 2010
Submission 2013 [kg/t] 0.30 0.33 0.33 0.34 0.35 0.33 0.33 0.34
Submission 2012 [kg/t] 0.30 0.33 0.33 0.34 0.34 0.33 0.33 0.34
absolute change [kg/t] 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
relative change [%] 0.00 0.00 0.03 0.11 0.15 0.30 0.39 0.08

Table: Resulting changes in fugitive NMVOC emissions 1990-2010

Unit 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
Submission 2013 [Gg] 104.24 90.06 79.83 70.37 58.06 51.64 44.31 37.11 30.76 25.03
Submission 2012 [Gg] 104.75 90.46 80.15 70.65 58.26 51.82 44.48 37.25 30.87 25.13
absolute change [Gg] -0.51 -0.39 -0.32 -0.28 -0.20 -0.18 -0.16 -0.14 -0.12 -0.10
relative change [%] -0.49 -0.44 -0.40 -0.39 -0.34 -0.35 -0.37 -0.38 -0.38 -0.39
Unit 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Submission 2013 [Gg] 19.19 16.08 13.13 10.65 9.10 7.72 6.64 5.95 4.94 4.71
Submission 2012 [Gg] 19.27 16.15 13.19 10.70 9.15 7.75 6.63 5.94 4.91 4.67
absolute change [Gg] -0.08 -0.07 -0.06 -0.05 -0.04 -0.03 0.00 0.01 0.03 0.04
relative change [%] -0.40 -0.41 -0.43 -0.44 -0.46 -0.40 0.07 0.23 0.59 0.86
Unit 2010
Submission 2013 [Gg] 4.52
Submission 2012 [Gg] 4.50
absolute change [Gg] 0.02
relative change [%] 0.00

Uncertainties

Uncertainty estimates for activity data of mobile sources derive from research project FKZ 360 16 023: "Ermittlung der Unsicherheiten der mit den Modellen TREMOD und TREMOD-MM berechneten Luftschadstoffemissionen des landgebundenen Verkehrs in Deutschland". For detailled information, please refer to the project's final report here (German version only!).

Uncertainty estimates emission factors for all 1.A.3.b sub-categories were compiled during the PAREST research project. Here, the final report has not yet been published.

Planned improvements

At the moment, no category specific improvements are planned.

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