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Emissions of ozone precursors decreased by 38% in period 1990 to 2012. Emissions of nitrogen oxides decreased by 26%, carbon monoxide by 53%, non-methane volatile organic compounds by 43% and methane by 12%. The reason is mainly 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. Emissions of non-methane volatile organic compounds decreased in 2012 under the prescribed target value, which must not be exceeded from 2010 onwards while emissions of nitrogen oxides in 2012 exceeded the specified target value.



Charts

Figure ZR10-1: Emissions of ozone-precursors, 1990-2011
Sources: 

National database on air emissions, Slovenian Environment Agency, 2014

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1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
NOx kt NMVOC equivalents 74.44 67.93 66.64 70.14 72.64 72 76.18 76.7 70.09 61.76
CO kt NMVOC equivalents 36.99 35.75 32.44 33.96 33.21 33.09 34.43 31.24 26.89 24.02
NMVOC kt NMVOC equivalents 69.28 64.22 61.85 62.34 63.19 62.61 66.13 62.16 56.63 53.19
CH4 kt NMVOC equivalents 1.41 1.36 1.42 1.38 1.38 1.37 1.35 1.36 1.38 1.37
Ozone precursors - total kt NMVOC equivalents 182.13 169.26 162.34 167.82 170.41 169.08 178.09 171.45 154.99 140.34
NOx index (1990 = 100) 100 91.26 89.52 94.23 97.58 96.73 102.34 103.04 94.15 82.97
CO index (1990 = 100) 100 96.63 87.69 91.79 89.77 89.46 93.06 84.45 72.7 64.94
NMVOC index (1990 = 100) 100 92.69 89.27 89.98 91.21 90.37 95.45 89.72 81.74 76.77
CH4 index (1990 = 100) 100 96.43 100.25 97.59 97.42 97.28 95.59 96.01 97.81 96.82
Ozone precursors - total index (1990 = 100) 100 92.93 89.14 92.14 93.57 92.84 97.78 94.14 85.1 77.06
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 62.49 63.6 64.3 62.04 60.68 58.97 60.02 60.71 66.55 57.62
CO kt NMVOC equivalents 23.44 22.73 22.07 21.78 20.37 19.93 18.78 17.92 17.53 17.16
NMVOC kt NMVOC equivalents 55.3 53.6 53.44 51.9 49.73 47.87 47.48 45.81 43.72 42.83
CH4 kt NMVOC equivalents 1.43 1.42 1.48 1.45 1.44 1.43 1.42 1.43 1.34 1.3
Ozone precursors - total kt NMVOC equivalents 142.66 141.34 141.29 137.17 132.22 128.2 127.71 125.87 129.14 118.92
NOx index (1990 = 100) 83.94 85.43 86.37 83.35 81.51 79.22 80.63 81.56 89.41 77.41
CO index (1990 = 100) 63.38 61.45 59.67 58.89 55.07 53.88 50.77 48.44 47.38 46.39
NMVOC index (1990 = 100) 79.81 77.36 77.13 74.91 71.78 69.1 68.54 66.12 63.1 61.83
CH4 index (1990 = 100) 101.52 100.22 104.6 102.45 101.62 101.17 100.31 101.06 95.15 92.18
Ozone precursors - total index (1990 = 100) 78.33 77.61 77.58 75.32 72.6 70.39 70.12 69.11 70.91 65.29
NOx target value index (1990 = 100)
NMVOC target value index (1990 = 100)
2010 2011 2012 Target 2010
NOx kt NMVOC equivalents 56.62 56.79 55.36 54.9
CO kt NMVOC equivalents 16.81 17.58 17.45
NMVOC kt NMVOC equivalents 41.77 40.96 39.51 40
CH4 kt NMVOC equivalents 1.28 1.28 1.25
Ozone precursors - total kt NMVOC equivalents 116.49 116.6 113.57
NOx index (1990 = 100) 76.06 76.28 74.37
CO index (1990 = 100) 45.44 47.52 47.17
NMVOC index (1990 = 100) 60.3 59.12 57.04
CH4 index (1990 = 100) 90.63 90.39 88.15
Ozone precursors - total index (1990 = 100) 63.96 64.02 62.36
NOx target value index (1990 = 100) 73.75
NMVOC target value index (1990 = 100) 57.74
Figure ZR10-2: Structure of ozone precursor emissions, by gas, 2012
Sources: 

National database on air emissions, Slovenian Environment Agency, 2014

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2012
NOx kt NMVOC equivalents 55
NMVOC kt NMVOC equivalents 17
CO kt NMVOC equivalents 40
CH4 kt NMVOC equivalents 1
ozone precursors - total kt NMVOC equivalents 114
NOx % 49
NMVOC % 15
CO % 35
CH4 % 1
Figure ZR10-3: Structure of ozone precursor emissions, by sector and gas, 2012
Sources: 

National database on air emissions, Slovenian Environment Agency, 2014

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ozone precursors - NOx NMVOC CO CH4
Energy supply kt NMVOC equivalents 13.02 12.63 0.17 0.21 0
Manufacturing Industries and Construction kt NMVOC equivalents 4.95 3.29 0.86 0.8 0
Transport kt NMVOC equivalents 43.73 33.96 5.67 4.1 0
Other kt NMVOC equivalents 27.43 3.64 12.1 11.6 0.09
Fugitive emissions kt NMVOC equivalents 4.67 0 4.49 0 0.17
Industrial Processes kt NMVOC equivalents 1.37 0.02 0.62 0.74 0
Solvent and other product use kt NMVOC equivalents 9.94 0 9.94 0 0
Agriculture kt NMVOC equivalents 7.89 1.82 5.38 0 0.69
Waste kt NMVOC equivalents 0.58 0.01 0.29 0 0.28
Total kt NMVOC equivalents 113.57 55.36 39.51 17.45 1.25
Energy supply % 11.46 22.81 0.44 1.23 0.13
Manufacturing Industries and Construction % 4.35 5.94 2.17 4.59 0.25
Transport % 38.5 61.34 14.35 23.47 0.4
Use of fuels in households and in the commercial sector % 24.15 6.57 30.62 66.49 6.87
Fugitive emissions % 4.11 0 11.37 0 14.05
Industrial Processes % 1.21 0.03 1.57 4.22 0
Solvent and other product use % 8.75 0 25.15 0 0
Agriculture % 6.95 3.29 13.6 0 55.7
Waste % 0.51 0.02 0.74 0 22.61
Figure ZR10-4: Emissions of ozone-precursors per capita, EU-27 [kg / capita], 2011
Sources: 

Air pollutant emissions data viewer (LRTAP Convention), European Environment Agency, 2014, EEA Greenhouse gas data viewer, European Environment Agency, 2014, Eurostat, 2014

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Luxembourg Estonia Latvia Finland Slovenia Poland Greece Lithuania Denmark Austria
NOx kt NMVOC equivalents 58.39 43.5 39.06 187.12 56.79 1037.91 360.49 61.65 153.15 222.91
NMVOC kt NMVOC equivalents 9.12 33.08 69.95 107.18 40.96 651.95 158.41 69.03 81.43 128.17
CO kt NMVOC equivalents 4.27 16.26 24.83 50.01 17.58 320.74 54.05 21.36 42.11 66.96
CH4 kt NMVOC equivalents 0.29 0.64 1.05 2.8 1.28 23.69 6.42 2.03 3.66 3.57
emissions of ozone precursors kt NMVOC equivalents 72.07 93.48 134.9 347.11 116.6 2034.29 579.36 154.08 280.35 421.62
population by countries number 537039 1320174 2023825 5426674 2058821 38533299 11062508 2971905 5602628 8451860
emissions per capita kg/capita 134.2 70.81 66.66 63.96 56.63 52.79 52.37 51.84 50.04 49.88
Spain Czech Republic Croatia Sweden Cyprus Portugal EU-28 Italy Bulgaria Romania
NOx kt NMVOC equivalents 1236.35 275.66 80.94 177.51 25.41 214.17 10792.93 1134.42 165.51 270.36
NMVOC kt NMVOC equivalents 615.3 139.82 73.07 177.18 9.62 175.68 6921.35 989.17 91.41 355.87
CO kt NMVOC equivalents 197.62 42 31.78 62.74 1.97 40.93 2587.27 271.08 31.34 111.57
CH4 kt NMVOC equivalents 22.1 6.82 2.34 3.32 0.6 8.3 258.4 24.38 5.12 14.84
emissions of ozone precursors kt NMVOC equivalents 2071.37 464.3 188.14 420.75 37.59 439.07 20559.94 2419.05 293.38 752.64
population by countries number 46727890 10516125 4262140 9555893 865878 10487289 505665739 59685227 7284552 20020074
emissions per capita kg/capita 44.33 44.15 44.14 44.03 43.41 41.87 40.66 40.53 40.27 37.59
Germany Slovakia France Belgium United Kingdom Malta Ireland Netherlands Hungary
NOx kt NMVOC equivalents 1577.34 103.71 1226.7 256.3 1260.36 9.58 86.07 316.48 157.57
NMVOC kt NMVOC equivalents 1008.06 68.29 733.95 100.56 752.08 3.03 43.63 144.37 100.11
CO kt NMVOC equivalents 364.53 24.99 394.23 42.62 235.94 1.28 13.97 58.22 43.57
CH4 kt NMVOC equivalents 32.56 2.76 34.06 4.23 27.81 0.11 7.75 10.17 5.64
emissions of ozone precursors kt NMVOC equivalents 2982.49 199.75 2388.94 403.7 2276.19 14.01 151.41 529.25 306.88
population by countries number 80523746 5410836 65578819 11161642 63896071 421367 4591087 16779575 9908798
emissions per capita kg/capita 37.04 36.92 36.43 36.17 35.62 33.24 32.98 31.54 30.97

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