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page 38 of 142 RIVM report 773301 001 / NRP report 410200 051
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Main source Sub-category Activity Emission factors Global total and regional emissions
data CO NO x SO 2 NMVOC CO NO x SO 2 NMVOC
Fossil fuel use Fossil fuel combustion S M M S M M M S M
Fossil fuel production S - - - M - - - M
Biofuel Biofuel combustion L M M M M L L L L
Industry/ Iron & steel production S M M M L M M M L
solvent use Non-ferro production S M M L L M M L L
Chemicals production S M M L L M M L L
Cement production S - - - - - M - -
Solvent use M - - - M - - - M
Miscellaneous V V V
Landuse/ Agriculture S - - - - - - - -
waste Animals (excreta; ruminants) S - - - - - - - -
treatment Biomass burning L M L M L L L L L
Landfills L - - - - - - - -
Agricultural waste burning L L L L L L L L L
Uncontrolled waste burning L - - - L - - - V
Natural Natural soils M - L - - - L - -
sources Grasslands M - - - - - - - -
Natural vegetation M M - - L M - - L
Oceans/wetlands M L - - - L - - -
Lightning S - L - - - L - -
CO NO x SO 2 NMVOC CO NO x SO 2 NMVOC
All sources - - - - - M M M L
Notes: Expert judgement of uncertainty ranges, which were assigned with the following classification in terms of order of
magnitude of the uncertainty in mind: S = small (10%); M = medium (50%); L = large (100%); V = very large (>100%).
"-" Indicates that the compound is not applicable for this source or that emissions are negligible.
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Compound Source Activity Data Emission Emissions
Gl Reg Cnt factor Gl Reg Cnt
+)&V
HFC-23 By-product HCFC-22 manufacture S M M M M M M
HFC-134a Usage (various) M M M M M M M
Other HFCs Usage (various) L* L L 1 M L* L L 1
3)&V
CF 4 ,C 2 F 6 By-product primary aluminium prod. S S S M 2 M 2 M 2 M 2
Misc. PFCs Use by semiconductor manufacture V V V S/M V V V
Misc. PFCs Other use V V V S/M V V V
6)
SF 6 Electr. Equipm. manuf. - production M 3 M M S M M M
SF 6 Electr. Equipm. manuf. - site erection M 3 M M S M M M
SF 6 Use of Electr. Equipment (GIS a.o.) M 3 M L M M M L
SF 6 Use for accelerators M 3 M M M M M M
SF 6 Unknown allocated to Electr. Equipm. M 3 M M S M M M
SF 6 Use for magnesium prod. (prim./diecasting) S 4 L L S S L L
SF 6 Use for semiconductor manufacture S V V L S V V
SF 6 Use for adiabatic properties (tires, shoes) S L L M M L L
SF 6 Use for soundproof windows M M M 5 S M M M
SF 6 Use for aluminium degassing M M M S M M M
SF 6 Misc. use (excluding China/Russia) M M M M M M M
SF 6 Misc. use by China/Russia L L L M L L L
Notes:
1 Except USA: activity data HFC-143a, 125, 227ea: S, of HFC-152a: M; related emissions: M
2 Assuming no significant trend 1990-1995
3 Together: S
4 Total for primary magnesium production and magnesium diecasting; for these two separately: L
5 For Germany: S