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Table A1.2 (Table 7.A2 of Good Practice) showing the results of the key category trend analysis for 99% of the total emissions and removals in 2003. Key categories are those that comprise 95% of the total.

Tier 1 Source Category Trend Assessment - including LULUCF
IPCC Source Categories Gas Base year estimate Gg 2003 estimate Gg Trend assessment Contribution to trend Cumulative total

Mobile combustion - road vehicles

CO2

7534.65

12094.67

0.031

16.9

16.9

Emissions from enteric fermentation in domestic livestock

CH4

21530.77

23592.21

0.030

16.3

33.2

Forest land remaining forest land

CO2

22677.47

25583.91

0.024

12.9

46.1

Emissions from stationary combustion - solid

CO2

3169.41

5435.29

0.017

9.2

55.3

Direct emissions from agricultural soils

N2O

585.22

2185.55

0.016

8.7

63.9

Emissions from solid waste disposal sites

CH4

2177.70

1425.48

0.013

7.3

71.3

Emissions from stationary combustion - gas

CO2

7682.58

8558.10

0.009

5.0

76.3

Emissions from agricultural soils - animal production

N2O

6767.81

7454.62

0.009

4.9

81.2

Conversion to forest land

CO2

960.59

1765.49

0.006

3.5

84.6

PFCs from aluminium production

PFC

515.60

80.70

0.006

3.2

87.9

Emissions from substitutes for ozone-depleting substances

HFCs

0.00

403.96

0.004

2.4

90.3

Emissions from stationary combustion - liquid

CO2

2546.55

2797.95

0.003

1.9

92.2

Mobile combustion - aviation

CO2

772.83

1158.33

0.002

1.2

93.4

Fugitive emissions from geothermal operations

CO2

357.34

269.11

0.002

1.0

94.4

Emissions from manure management

CH4

574.51

549.44

0.002

0.9

95.3

Mobile combustion - road vehicles

CH4

148.20

50.44

0.001

0.8

96.1

Emissions from the iron and steel industry

CO2

1329.40

1716.80

0.001

0.5

96.6

Emissions from cement production

CO2

366.66

527.47

0.001

0.5

97.1

Mobile combustion - rail

CO2

77.50

164.19

0.001

0.4

97.5

Mobile combustion - marine

CO2

247.82

370.94

0.001

0.4

97.9

Indirect emissions from nitrogen used in agriculture

N2O

2668.96

3328.82

0.001

0.4

98.2

Fugitive emissions from oil and gas operations

CO2

263.95

380.93

0.001

0.3

98.6

Mobile combustion - road vehicles

N2O

64.25

129.91

0.001

0.3

98.9

Non-CO2 emissions from stationary combustion

CH4

60.19

40.72

0.000

0.2

99.1