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Emissions of ozone precursors decreased by 45% in period 1990 to 2013. Emissions of nitrogen oxides were decreased by 32%, carbon monoxide and non-methane volatile organic compounds by 54% and methane by 19%. 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, 1990-2013
Sources: 

National database on air emissions, Slovenian Environment Agency, 2015

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1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
NOx kt NMVOC equivalents 76.48 69.99 68.46 71.74 74.5 73.58 77.68 78.2 71.62 63.25
CO kt NMVOC equivalents 37.18 36.12 32.74 33.95 33.21 33.09 34.43 31.25 26.91 24.04
NMVOC kt NMVOC equivalents 72.19 67.56 65.24 64.27 65.05 64.52 67.99 64.29 58.73 55.03
CH4 kt NMVOC equivalents 1.35 1.3 1.33 1.29 1.29 1.3 1.27 1.27 1.3 1.29
ozone precursors - total kt NMVOC equivalents 187.2 174.97 167.77 171.24 174.04 172.49 181.37 175.02 158.55 143.61
NOx index (1990 = 100) 100 91.51 89.51 93.8 97.41 96.21 101.58 102.25 93.64 82.71
CO index (1990 = 100) 100 97.17 88.06 91.33 89.33 89.02 92.6 84.07 72.38 64.66
NMVOC index (1990 = 100) 100 93.59 90.38 89.03 90.11 89.38 94.19 89.07 81.36 76.23
CH4 index (1990 = 100) 100 95.82 98.25 95.12 95.19 95.73 93.92 93.93 95.66 95.05
ozone precursors - total index (1990 = 100) 100 93.47 89.62 91.48 92.97 92.14 96.89 93.5 84.7 76.71
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 63.99 65.11 65.79 63.6 62.15 60.45 61.51 62.04 67.76 58.58
CO kt NMVOC equivalents 23.46 22.73 22.11 21.82 20.4 19.94 18.86 17.93 17.56 17.17
NMVOC kt NMVOC equivalents 53.47 51.64 51.51 49.86 47.49 45.45 45.07 42.99 40.89 39.46
CH4 kt NMVOC equivalents 1.34 1.32 1.38 1.35 1.33 1.33 1.3 1.3 1.21 1.17
ozone precursors - total kt NMVOC equivalents 142.26 140.81 140.79 136.62 131.38 127.16 126.74 124.26 127.42 116.39
NOx index (1990 = 100) 83.67 85.13 86.03 83.15 81.27 79.04 80.43 81.12 88.6 76.6
CO index (1990 = 100) 63.1 61.15 59.47 58.7 54.88 53.63 50.74 48.23 47.24 46.19
NMVOC index (1990 = 100) 74.07 71.54 71.36 69.07 65.79 62.96 62.43 59.55 56.64 54.66
CH4 index (1990 = 100) 98.83 97.79 101.79 99.76 98.5 98.03 96.02 95.95 89.57 86.56
ozone precursors - total index (1990 = 100) 76 75.22 75.21 72.98 70.18 67.93 67.7 66.38 68.07 62.17
NOx target value index (1990 = 100)
NMVOC target value index (1990 = 100)
2010 2011 2012 2013 target 2010
NOx kt NMVOC equivalents 57.5 57.21 55.98 52.33 54.9
CO kt NMVOC equivalents 16.81 17.58 17.45 17.1
NMVOC kt NMVOC equivalents 38.39 36.96 35.36 33.32 40
CH4 kt NMVOC equivalents 1.16 1.15 1.12 1.09
ozone precursors - total kt NMVOC equivalents 113.86 112.9 109.91 103.84
NOx index (1990 = 100) 75.19 74.81 73.2 68.42
CO index (1990 = 100) 45.22 47.29 46.93 46
NMVOC index (1990 = 100) 53.19 51.2 48.98 46.16
CH4 index (1990 = 100) 85.32 85.08 82.74 80.54
ozone precursors - total index (1990 = 100) 60.82 60.31 58.71 55.47
NOx target value index (1990 = 100) 71.78
NMVOC target value index (1990 = 100) 55.41
Figure ZR10-2: Structure of ozone precursor emissions, by gas, 2013
Sources: 

National database on air emissions, Slovenian Environment Agency, 2015

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2013
NOx kt NMVOC equivalents 52
NMVOC kt NMVOC equivalents 17
CO kt NMVOC equivalents 33
CH4 kt NMVOC equivalents 1
ozone precursors - total kt NMVOC equivalents 104
NOx % 50
NMVOC % 16
CO % 32
CH4 % 1
Figure ZR10-3: Structure of ozone precursor emissions, by sector and gas, 2013
Sources: 

National database on air emissions, Slovenian Environment Agency, 2015

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ozone precursors - NOx NMVOC CO CH4
Energy industries kt NMVOC equivalents 11.71 11.35 0.16 0.19 0
Manufacturing industries and construction kt NMVOC equivalents 4.83 3.05 0.91 0.87 0
Road transport kt NMVOC equivalents 34.21 27.37 3.69 3.14 0
Small combustion kt NMVOC equivalents 22.84 3.55 7.67 11.61 0.01
Fugitive emissions from fuels kt NMVOC equivalents 4.22 0 4.05 0 0.17
Industrial processes and product use kt NMVOC equivalents 10.55 0.02 9.77 0.76 0
Other transport kt NMVOC equivalents 7.4 5.14 1.73 0.52 0
Agriculture kt NMVOC equivalents 7.69 1.83 5.21 0 0.65
Waste kt NMVOC equivalents 0.4 0.01 0.13 0 0.26
Total kt NMVOC equivalents 103.84 52.33 33.32 17.1 1.09
Energy industries % 11.27 21.69 0.48 1.13 0.14
Manufacturing industries and construction % 4.65 5.83 2.72 5.08 0.19
Road transport % 32.94 52.31 11.07 18.37 0.41
Small combustion % 22 6.79 23.02 67.89 0.85
Fugitive emissions from fuels % 4.07 0 12.17 0 15.62
Industrial processes and product use % 10.16 0.03 29.31 4.46 0
Other transport % 7.12 9.83 5.2 3.06 0
Agriculture % 7.4 3.5 15.64 0 59.16
Waste % 0.39 0.03 0.39 0 23.63
Figure ZR10-4: Emissions of ozone-precursors per capita, EU-28 [kg / capita], 2013
Sources: 

Air pollutant emissions data viewer (LRTAP Convention), European Environment Agency, 2015, EEA Greenhouse gas data viewer, European Environment Agency, 2015, Eurostat, 2015

Show data
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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