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Table 1.5.2 (a& b) Key category analysis for the 2004 inventory - Tier 1 level assessment including LULUCF (a) and excluding LULUCF (b)

(a) Tier 1 category level assessment - including LULUCF
IPCC categories Gas 2004 estimate Gg Level assessment Cumulative total

Forest land remaining forest land

CO2

26254.43

25.4

25.4

Emissions from enteric fermentation in domestic livestock

CH4

23714.98

23.0

48.4

Mobile combustion - road vehicles

CO2

12416.93

12.0

60.4

Emissions from agricultural soils - animal production

N2O

7248.77

7.0

67.4

Emissions from stationary combustion - gas

CO2

7031.32

6.8

74.2

Emissions from stationary combustion - solid

CO2

5808.96

5.6

79.9

Indirect emissions from nitrogen used in agriculture

N2O

3271.38

3.2

83.0

Emissions from stationary combustion - liquid

CO2

2755.47

2.7

85.7

Direct emissions from agricultural soils

N2O

1806.29

1.7

87.5

Emissions from the iron and steel industry

CO2

1731.51

1.7

89.1

Emissions from solid waste disposal sites

CH4

1509.12

1.5

90.6

Mobile combustion - aviation

CO2

1192.23

1.2

91.7

Conversion to forest land

CO2

747.94

0.7

92.5

Emissions from manure management

CH4

745.88

0.7

93.2

Conversion to grassland

CO2

666.44

0.6

93.8

Cropland remaining cropland

CO2

662.29

0.6

94.5

Fugitive emissions from oil and gas operations

CO2

602.86

0.6

95.1

(b) Tier 1 category level assessment - excluding LULUCF
IPCC categories Gas 2004 estimate Gg Level assessment Cumulative total

Emissions from enteric fermentation in domestic livestock

CH4

23714.98

31.8

31.8

Mobile combustion - road vehicles

CO2

12416.93

16.6

48.4

Emissions from agricultural soils - animal production

N2O

7248.77

9.7

58.1

Emissions from stationary combustion - gas

CO2

7031.32

9.4

67.6

Emissions from stationary combustion - solid

CO2

5808.96

7.8

75.4

Indirect emissions from nitrogen used in agriculture

N2O

3271.38

4.4

79.7

Emissions from stationary combustion - liquid

CO2

2755.47

3.7

83.4

Direct emissions from agricultural soils

N2O

1806.29

2.4

85.9

Emissions from the iron and steel industry

CO2

1731.51

2.3

88.2

Emissions from solid-waste disposal sites

CH4

1509.12

2.0

90.2

Mobile combustion - aviation

CO2

1192.23

1.6

91.8

Emissions from manure management

CH4

745.88

1.0

92.8

Fugitive emissions from oil and gas operations

CO2

602.86

0.8

93.6

Emissions from substitutes for ozone depleting substances

HFCs

597.36

0.8

94.4

Emissions from aluminium production

CO2

552.29

0.7

95.1