global atmosphere
Net Carbon Dioxide Emissions by SourceR: 1990-2003
Net emissions taking account of emissions and removals
(million tonnes of carbon equivalent)R
Sector | 1990 | 1995 | 2000 | 2001 | 2002 | 2003 7 |
|---|
Energy supply | 5.86 | 6.68 | 6.70 | 6.57 | 6.34 | 6.32 |
|---|
Agriculture, business, industrial processes and waste management | 3.60 | 2.60 | 2.42 | 2.51 | 2.05 | 2.03 |
|---|
Public and residential | 2.37 | 2.29 | 2.28 | 2.42 | 2.23 | 2.18 |
|---|
Transport 13 | 2.77 | 2.73 | 2.80 | 2.76 | 2.81 | 2.87 |
|---|
Net land use change & forestry | -0.83 | -1.19 | -1.26 | -1.27 | -1.32 | -1.34 |
|---|
Total net emissions 8,9,10 | 13.77 | 13.11 | 12.95 | 12.99 | 12.11 | 12.07 |
|---|
It should be noted that improved data sources and estimation techniques have routinely led to revision of historic greenhouse gas emission estimates.
Carbon dioxide (CO 2) is the main contributor to greenhouse gas emissions. The UK contributes about 2% to total global CO 2 emissions. 14 In 2003, CO 2 made up 86% of net greenhouse gas emissions in the UK (weighted by global warming potential 7). Scotland's net emissions of CO 2 in 2003 were 12.07 million tonnes of carbon equivalent (around 8% of the UK total), a decline of 1.7 million tonnes from 1990 levels.
Energy supply is an important sector for CO 2 emissions in Scotland, generating CO 2 primarily from the combustion of fossil fuels. CO 2 emissions from the energy supply sector increased by 8% since 1990.
In Scotland, land use change and forestry, taken as a whole, acts as a carbon sink, absorbing more carbon dioxide than it releases. Estimates of emissions and removals from this sector are particularly uncertain since they depend critically on assumptions made on the rate of loss or gain of carbon in Scotland's carbon rich soils.
SOURCE: NETCEN 12