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35 Emissions to air1
  1990 1995 2000 2005 2007 2008 2009 2010 2011* 2012*
Emissions of greenhouse gases2, total. Million tonnes CO2 equivalents 50 50 54 54 56 54 52 54 53 53
Carbon dioxide. Million tonnes 35 38 42 43 45 44 43 46 45 44
Methane. 1 000 tonnes  240  248  241  227  226  219  215  215  209  207
Nitrous oxide. 1 000 tonnes 16 15 15 15 14 12 10 10 10 10
HFCs (hydrofluorocarbons). Tonnes 0 49  164  281  345  391  425  507  537  561
PFCs (perfluorocarbons). Tonnes  504  301  198  124  122  115 56 30 33 33
SF6(sulphur hexafluoride). Tonnes 92 25 39 13 3 3 3 3 3 3
                     
Acidifying gases and ozone precursors                    
Sulphur dioxide. 1 000 tonnes 52 34 27 24 20 20 15 19 19 18
Nitrogen oxides3. 1 000 tonnes  195  202  212  204  206  194  183  186  180  173
Ammonia. 1 000 tonnes 24 25 26 27 27 27 27 27 26 26
NMVOCs4. 1 000 tonnes  293  365  380  221  188  156  140  142  139  132
Carbon monoxide. 1 000 tonnes  747  645  520  397  358  343  325  338  311  298
                     
Particulate matter5                    
Particulate matter, PM10. 1 000 tonnes 51 50 50 48 47 45 43 46 44 ...
Particulate matter, PM2.5. 1 000 tonnes 41 43 43 40 39 38 36 40 37 ...
                     
Heavy metals and persistent organic pollutants                    
Lead. Tonnes  189 25 10 8 9 8 6 6 6 ...
Cadmium. kg 1 174 1 047  778  637  631  608  487  581  578 ...
Mercury. kg 1 423  795  683  615  557  526  409  462  409 ...
Arsenic. Tonnes 4 3 3 2 2 2 1 2 2 ...
Chromium. Tonnes 13 11 9 3 3 3 3 3 3 ...
Copper. Tonnes 26 23 24 26 27 28 26 27 29 ...
PAHs6. Tonnes  305  235  224  247  148  154 99 98 96 ...
PAH-46. Tonnes 37 27 25 30 16 17 9 8 9 ...
Dioxins. g  128 69 34 24 24 22 21 25 22 ...
1  Emissions from international sea and air transport are not included.
2  Includes carbon dioxide, methane, nitrous oxide, HFCs, PFCs and SF6.
3  Estimated as NO2.
4  Non-methane volatile organic compounds.
5  PM10 and PM2.5: Particles with a diameter less than 10 or 2.5 µm (micrometres) respectively.
6  Polycyclic aromatic hydrocarbons (PAHs) consist of fused aromatic rings. Norway has an obligation to report emissions of PAHs to the Convention on Long-Range Transboundary Air Pollution (CLRTAP) For the purposes of emission inventories, the following four indicator compounds shall be used: benzo(a)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, and indeno(1,2,3-cd)pyrene.
Source: Emission inventory, Statistics Norway.
More information:  http://www.ssb.no/en/natur-og-miljo 

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