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In the period 1990–2014, emissions of total ozone precursors decreased by 51%. Emissions of nitrogen oxides decreased by 42%, carbon monoxide by 67%, non-methane volatile organic compounds by 56% and methane by 20%. The decrease is mainly a consequence of the introduction of more stringent emission standards for motor vehicles. This measure contributed to a significant reduction in emissions of nitrogen oxides and carbon dioxide from road transport, which is the main source of ozone precursors. In 2014, emissions of nitrogen oxides and non-methane volatile organic compounds were below the prescribed target values that are not to have been exceeded from 2010 onwards.


Charts

Figure ZR10-1: Emissions of ozone-precursors, 1990-2014
Sources: 

National database on air emissions, Slovenian Environment Agency, 2016

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1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
NOx kt NMVOC equivalents 82.5 75.15 74.19 76.45 80.37 79.18 81.57 80.83 73.94 66.09
CO kt NMVOC equivalents 35.64 34.48 30.99 32.19 31.44 31.35 32.57 29.4 25.03 22.46
NMVOC kt NMVOC equivalents 71.66 67.23 64.46 63.56 64.88 64.23 68 64.27 58.73 54.93
CH4 kt NMVOC equivalents 1.38 1.34 1.36 1.32 1.32 1.33 1.31 1.31 1.33 1.33
ozone precursors - total kt NMVOC equivalents 191.18 178.2 170.99 173.51 178.01 176.09 183.44 175.81 159.03 144.81
NOx index (1990 = 100) 100 91.1 89.93 92.67 97.43 95.98 98.87 97.98 89.62 80.11
CO index (1990 = 100) 100 96.74 86.94 90.32 88.2 87.95 91.38 82.5 70.22 63.01
NMVOC index (1990 = 100) 100 93.82 89.95 88.69 90.54 89.64 94.9 89.69 81.97 76.66
CH4 index (1990 = 100) 100 96.48 98.32 95.24 95.11 96.25 94.62 94.34 95.92 96.04
ozone precursors - total index (1990 = 100) 100 93.21 89.44 90.76 93.11 92.11 95.95 91.96 83.18 75.75
NOx target value index (1990 = 100)
NMVOC target value index (1990 = 100)
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
NOx kt NMVOC equivalents 66.4 67.01 67.43 64.98 63.96 63.11 64.12 63.69 68.65 59.68
CO kt NMVOC equivalents 20.85 20.11 19.41 18.96 17.46 16.9 15.82 14.97 14.41 14.77
NMVOC kt NMVOC equivalents 53.53 51.9 51.86 50.26 48.2 46.4 46 43.85 41.46 40.83
CH4 kt NMVOC equivalents 1.38 1.36 1.41 1.38 1.37 1.37 1.34 1.34 1.26 1.24
ozone precursors - total kt NMVOC equivalents 142.16 140.39 140.11 135.57 130.99 127.78 127.28 123.86 125.78 116.52
NOx index (1990 = 100) 80.49 81.23 81.74 78.76 77.53 76.49 77.73 77.21 83.21 72.35
CO index (1990 = 100) 58.51 56.43 54.46 53.19 48.98 47.41 44.37 42 40.44 41.44
NMVOC index (1990 = 100) 74.71 72.44 72.37 70.13 67.27 64.76 64.2 61.2 57.86 56.97
CH4 index (1990 = 100) 99.5 98 101.8 100 99.1 98.63 96.78 96.79 90.96 89.31
ozone precursors - total index (1990 = 100) 74.36 73.43 73.29 70.91 68.52 66.83 66.58 64.79 65.79 60.95
NOx target value index (1990 = 100)
NMVOC target value index (1990 = 100)
2010 2011 2012 2013 2014 target 2010
NOx kt NMVOC equivalents 58.41 58.14 56.82 53.66 48.15 54.9
CO kt NMVOC equivalents 14.87 14.54 14.15 13.99 11.9
NMVOC kt NMVOC equivalents 39.18 37.12 35.07 33.56 31.77 40
CH4 kt NMVOC equivalents 1.23 1.22 1.19 1.16 1.11
ozone precursors - total kt NMVOC equivalents 113.7 111.02 107.24 102.38 92.92
NOx index (1990 = 100) 70.81 70.48 68.88 65.05 58.36
CO index (1990 = 100) 41.73 40.79 39.7 39.25 33.39
NMVOC index (1990 = 100) 54.68 51.8 48.94 46.84 44.33
CH4 index (1990 = 100) 88.53 88.3 86.09 84.17 80.07
ozone precursors - total index (1990 = 100) 59.47 58.07 56.09 53.55 48.61
NOx target value index (1990 = 100) 66.55
NMVOC target value index (1990 = 100) 55.82
Figure ZR10-2: Structure of ozone precursor emissions, by substances, Slovenia, 2014
Sources: 

National database on air emissions, Slovenian Environment Agency, 2016

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2014
NOx kt NMVOC equivalents 48
NMVOC kt NMVOC equivalents 12
CO kt NMVOC equivalents 32
CH4 kt NMVOC equivalents 1
ozone precursors - total kt NMVOC equivalents 93
NOx % 52
NMVOC % 13
CO % 34
CH4 % 1
Figure ZR10-3: Structure of ozone precursor emissions, by sector, Slovenia, 2014
Sources: 

National database on air emissions, Slovenian Environment Agency, 2016

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ozone precursors - NOx NMVOC CO CH4
Energy industries kt NMVOC equivalents 8.46 8.2 0.13 0.13 0
Manufacturing industries and construction kt NMVOC equivalents 7.71 4.96 2.16 0.58 0
Road transport kt NMVOC equivalents 30.48 24.92 2.98 2.57 0
Small combustion kt NMVOC equivalents 16.73 2.52 6.79 7.35 0.08
Fugitive emissions from fuels kt NMVOC equivalents 2.03 0 1.89 0 0.14
Industrial processes and product use kt NMVOC equivalents 10.76 0.23 9.8 0.73 0
Other transport kt NMVOC equivalents 7.8 5.4 1.86 0.54 0
Agriculture kt NMVOC equivalents 8.19 1.9 5.65 0 0.64
Waste kt NMVOC equivalents 0.78 0.03 0.51 0 0.24
Total kt NMVOC equivalents 92.92 48.15 31.77 11.9 1.11
Energy industries % 9.1 17.03 0.4 1.09 0.12
Manufacturing industries and construction % 8.29 10.3 6.8 4.88 0.26
Road transport % 32.8 51.76 9.39 21.61 0.35
Small combustion % 18 5.22 21.36 61.74 7.16
Fugitive emissions from fuels % 2.19 0.01 5.95 0.01 12.55
Industrial processes and product use % 11.58 0.47 30.85 6.15 0
Other transport % 8.39 11.22 5.84 4.52 0
Agriculture % 8.81 3.94 17.78 0 58.01
Waste % 0.84 0.05 1.62 0 21.54
Figure ZR10-4: Emissions of ozone-precursors, EU-28 countries, 2014 [in kg / capita]
Sources: 

CLRTAP/EMEP, CEIP, 2016, European Environment Agency, 2015, EEA Greenhouse gas data viewer, European Environment Agency, 2015, Eurostat, 2016

Notes to table ZR10-4:1- Data for Greece are not availible.2- Data from EEA are from 2013, the rest are from 2014. 

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Luxembourg Latvia Estonia Finland Denmark Poland Slovenia Lithuania Austria Ireland
NOx kt NMVOC equivalents 38.35 41.53 36.26 176.75 151.12 973.84 52.33 56.32 198.03 96.46
NMVOC kt NMVOC equivalents 7.65 87.45 32.93 94.56 114.43 635.78 33.32 63.39 126.34 90
CO kt NMVOC equivalents 3.28 16.34 17.37 40.6 37.27 316.4 17.1 16.1 64.06 13.55
CH4 kt NMVOC equivalents 0.28 1.09 0.62 2.72 3.66 27.36 1.25 2.03 3.54 8.05
emissions of ozone precursors kt NMVOC equivalents 49.57 146.41 87.18 314.63 306.48 1953.38 104 137.85 391.97 208.06
population by countries number 549680 2001468 1315819 5451270 5617345 38017856 2061085 2943472 8506889 4605501
emissions per capita kg/capita 90.17 73.15 66.26 57.72 54.56 51.38 50.46 46.83 46.08 45.18
Greece Belgium Sweden Czech Republic Portugal EU28 Bulgaria Germany Spain Italy
NOx kt NMVOC equivalents 291.12 253.37 153.62 220.93 197 9975.27 149.54 1548.4 990.82 1001.1
NMVOC kt NMVOC equivalents 144.77 137.43 173.76 136.4 169.63 7004.93 88.83 1138.24 550.8 905.54
CO kt NMVOC equivalents 44.57 60.83 61.77 57.12 31.72 2441.89 33.24 339.78 188.03 282.8
CH4 kt NMVOC equivalents 6.47 4.26 3.2 6.84 8.17 267.84 4.79 32.47 21.55 24.05
emissions of ozone precursors kt NMVOC equivalents 486.92 455.89 392.35 421.29 406.51 19689.93 276.4 3058.89 1751.2 2213.49
population by countries number 10926807 11203992 9644864 10512419 10427301 506880616 7245677 80767463 46512199 60782668
emissions per capita kg/capita 44.56 40.69 40.68 40.08 38.99 38.85 38.15 37.87 37.65 36.42
United Kingdom France Slovakia Romania Cyprus Croatia Hungary Netherlands Malta
NOx kt NMVOC equivalents 1244 1207.22 97.09 266.96 19.72 68.01 147.09 292.33 5.94
NMVOC kt NMVOC equivalents 803 758.38 63.2 322.95 6.68 46.07 120.4 149.68 3.32
CO kt NMVOC equivalents 216.78 351.57 24.02 83.67 1.65 16.79 35.81 68.29 1.35
CH4 kt NMVOC equivalents 34.97 34.25 2.88 14.82 0.87 2.28 5.33 9.96 0.07
emissions of ozone precursors kt NMVOC equivalents 2298.75 2351.42 187.2 688.41 28.92 133.16 308.63 520.27 10.68
population by countries number 64351155 65835579 5415949 19947311 858000 4246809 9877365 16829289 425384
emissions per capita kg/capita 35.72 35.72 34.57 34.51 33.71 31.36 31.25 30.91 25.12


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