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[PR08] Emissions of air pollutants from transport
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Key message
Neutral

In last decade major emissions of air pollutants from transport decreased. However transport, especially road transport, remains one of the most significant air pollutant. In 2013 road transport contributed 53% to the total emissions of nitrogen oxides. Emissions of substances that cause acidification in the period 1990-2013 reduced by 41%, emissions of ozone precursors by 60%. Emissions of particulate matter in the period 2000-2013 decreased by 12%.

The indicator shows the transport emissions of acidifying substances, ozone precursors and particulates. The structure of emissions is indicated by individual substances.

An ozone precursor is a substance contributing to the formation of ground-level (tropospheric) ozone. The ozone precursors include: nitrogen oxides (NOx), carbon monoxide (CO), methane (CH4) and non-methane volatile organic compounds (NMVOC).

Acidifying substances include: sulphur dioxide (SO2), nitrogen oxides (NOx) and ammonia (NH3).

Particulate emissions can be subdivided into primary particulates PM10 (particulates with a diameter of 10 μm or less, which are directly emitted to air) and secondary particulates PM10 or particulate precursors (part of emissions of NOx, SO2 and NH3, which are as a result of photochemical reactions transformed into particulates with a diameter of 10 μm or less).

Charts

Figure PR08-1: Air emissions from transport, Slovenia, 1990-2013
Sources:

National database on air emissions, Greenhouse gas database, Slovenian Environment Agency, 2015.

Show data
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
acidifying substances 1000 t acid equivalents 1 1 1 1 1 1 1 1 1 1
ozone precursors 1000 t NMVOC equivalents 103 96 92 97 101 101 107 99 83 72
particulate matter 1000 t PM10 equivalents
acidifying substances index (1990 = 100) 100 94 90 96 104 89 95 94 80 72
ozone precursors index (1990 = 100) 100 93 89 94 98 98 103 96 80 70
particulate matter index (2000 = 100)
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
acidifying substances 1000 t acid equivalents 1 1 1 1 1 1 1 1 1 1
ozone precursors 1000 t NMVOC equivalents 68 66 62 60 56 52 52 53 58 48
particulate matter 1000 t PM10 equivalents 29 29 27 27 28 27 28 30 34 28
acidifying substances index (1990 = 100) 73 73 65 65 66 63 65 70 79 66
ozone precursors index (1990 = 100) 66 64 60 58 54 51 50 51 56 47
particulate matter index (2000 = 100) 100 101 94 94 97 93 96 103 117 98
2010 2011 2012 2013
acidifying substances 1000 t acid equivalents 1 1 1 1
ozone precursors 1000 t NMVOC equivalents 46 46 45 42
particulate matter 1000 t PM10 equivalents 27 28 28 26
acidifying substances index (1990 = 100) 63 64 63 59
ozone precursors index (1990 = 100) 45 44 44 40
particulate matter index (2000 = 100) 93 95 95 88
Figure PR08-2: Structure of air emissions from transport, Slovenia, 2013
Sources:

National database on air emissions, Greenhouse gas database, Slovenian Environment Agency, 2015.
Note to Table ZR08-2: Emissions are expressed as * equivalent emissions of PM10 ** NMVOC equivalent, *** acidification equivalent

Show data
particulate matter* ozone precursors** acidifying substances***
NOx 1000 t equiv. (PM10*, NMVOC**, acidif.***) 23.45 32.51 0.58
PM10 1000 t equiv. (PM10*, NMVOC**, acidif.***) 1.89
NH3 1000 t equiv. (PM10*, NMVOC**, acidif.***) 0.28 0.03
SO2 1000 t equiv. (PM10*, NMVOC**, acidif.***) 0.03 0
CO 1000 t equiv. (PM10*, NMVOC**, acidif.***) 3.66
NMVOC 1000 t equiv. (PM10*, NMVOC**, acidif.***) 5.42
CH4 1000 t equiv. (PM10*, NMVOC**, acidif.***) 0
Total 1000 t equiv. (PM10*, NMVOC**, acidif.***) 25.66 41.6 0.61
NOx % 91.41 78.15 95.41
PM10 % 7.36
NH3 % 1.1 4.29
SO2 % 0.13 0.31
CO % 8.81
NMVOC % 13.03
CH4 % 0.01
Figure PR08-3: Air emissions from passenger cars by pollutants, Slovenia, 2008-2013
Sources:

National database on air emissions, Greenhouse gas database, Slovenian Environment Agency, 2015.

Show data
2008 2009 2010 2011 2012 2013
NOx kt 11 9 9 10 10 9
CO2 kt 3773 3343 3287 3551 3605 3413
PM10 kt 1 1 1 1 1 1
PM2.5 kt 1 1 1 1 1 1
NOx index (2008 = 100) 100 84 82 87 89 84
CO2 index (2008 = 100) 100 89 87 94 96 90
PM10 index (2008 = 100) 100 84 83 87 89 83
PM2.5 index (2008 = 100) 100 82 82 85 87 81
Last modified
01.10.2015
Author(s)

Martina Logar, Nataša Kovač, Agencija RS za okolje