Table 1.5.2 Key source analysis - Tier 1 level assessment

IPCC source categories	Gas	2002	Level	Total
CH₄ emissions from enteric fermentation in domestic livestock	CH₄	23584.68	31.5	31.5
Mobile combustion - road vehicles	CO₂	12292.63	16.4	47.9
CO₂ emissions from stationary combustion - gas	CO₂	10420.49	13.9	61.8
N₂O emissions from agricultural soils - animal production	N₂O	7255.24	9.7	71.4
CO₂ emissions from stationary combustion - solid	CO₂	3394.88	4.5	76.0
Indirect N₂O emissions from nitrogen used in agriculture	N₂O	3258.01	4.3	80.3
CO₂emissions from stationary combustion - liquid	CO₂	2491.18	3.3	83.6
Direct N₂O emissions from agricultural soils	N₂O	2104.46	2.8	86.4
CH₄ emissions from solid waste disposal sites	CH₄	2066.40	2.8	89.2
CO₂ emissions from the iron and steel industry	CO₂	1563.80	2.1	91.3
Mobile combustion - aviation	CO₂	1089.25	1.5	92.7
CH₄ emissions from manure management	CH₄	548.00	0.7	93.5
CO₂ emissions from cement production	CO₂	541.72	0.7	94.2
CO₂ emissions from aluminium production	CO₂	540.34	0.7	94.9
Emissions from substitutes for ozone depleting substances	HFCs	387.59	0.5	95.4