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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 2012 road transport contributed 53% to the total emissions of nitrogen oxides. Emissions of substances that cause acidification in the period 1990-2012 reduced by 36%, emissions of ozone precursors by 56%. Emissions of particulate matter in the period 2000-2012 decreased by 4%.

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, 1990-2012
Sources:

National database on air emissions, Greenhouse gas database, Slovenian Environment Agency, 2014.

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 100 91 88 95 98 99 105 97 81 70
particulate matter 1000 t PM10 equivalents
acidifying substances index (1990 = 100) 100 94 90 97 104 89 96 94 80 72
ozone precursors index (1990 = 100) 100 92 88 95 99 99 105 98 81 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 66 64 60 58 53 50 49 50 55 47
particulate matter 1000 t PM10 equivalents 28 28 26 26 27 25 26 28 33 27
acidifying substances index (1990 = 100) 73 73 64 64 66 62 64 69 79 66
ozone precursors index (1990 = 100) 66 64 60 58 53 50 49 50 56 47
particulate matter index (2000 = 100) 100 101 93 93 96 91 94 102 118 98
2010 2011 2012
acidifying substances 1000 t acid equivalents 1 1 1
ozone precursors 1000 t NMVOC equivalents 44 45 44
particulate matter 1000 t PM10 equivalents 26 27 27
acidifying substances index (1990 = 100) 63 64 64
ozone precursors index (1990 = 100) 45 45 44
particulate matter index (2000 = 100) 94 96 96
Figure PR08-2: Structure of air emissions from transport, Slovenia, 2012
Sources:

National database on air emissions, Greenhouse gas database, Slovenian Environment Agency, 2014.
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.***) 24.5 33.96 0.61
PM10 1000 t equiv. (PM10*, NMVOC**, acidif.***) 1.9
NH3 1000 t equiv. (PM10*, NMVOC**, acidif.***) 0.33 0.03
SO2 1000 t equiv. (PM10*, NMVOC**, acidif.***) 0.03 0
CO 1000 t equiv. (PM10*, NMVOC**, acidif.***) 4.1
NMVOC 1000 t equiv. (PM10*, NMVOC**, acidif.***) 5.67
CH4 1000 t equiv. (PM10*, NMVOC**, acidif.***) 0.01
Total 1000 t equiv. (PM10*, NMVOC**, acidif.***) 26.76 43.73 0.64
NOx % 91.54 77.66 94.99
PM10 % 7.12
NH3 % 1.22 4.72
SO2 % 0.12 0.29
CO % 9.36
NMVOC % 12.97
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, 2014.

Show data
2008 2009 2010 2011 2012 2013
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
28.05.2014
Author(s)

Martina Logar, Agencija RS za okolje