Global carbon dioxide emissions, 1970-2001

Developments in global carbon dioxide emissions
In 2001, total global anthropogenic carbon dioxide emissions rose by less than 1% (this is an estimate); emissions in 2000 rose by more than 2%. This increase is primarily accounted for by an increase in annual coal use of approximately 2% during these years. In the period from 1990 to 2001, total carbon dioxide emissions rose by about 13%, the same rate as in previous years.
Contribution of individual sectors to global carbon dioxide emissions
The largest continuous rise in emissions was from electricity production and road transport: 150% over the last thirty years and almost 30% during the last ten years. Emissions from cement production have increased even faster. carbon dioxideemissions from road traffic account for approximately three quarters of total global carbon dioxide transport emissions. However, carbon dioxide emissions from international aviation and shipping have increased by a quarter in the last decade, with emissions from aviation increasing by more than 110% over the last 30 years.
Combustion emissions from industry - excluding refineries - and the household/services sector have remained remarkably stable over the years (after the filtering out of variations reflecting changes in economic trends). In the 1990s, global emissions from these sectors actually fell by 9 and 5% respectively. Industrial combustion emissions fell by a few percentage points in the 1990s in the OECD countries and in China; the fall in the former Soviet Union was actually more than 50%. However, combustion emissions increased by a quarter in the rest of Asia and in Latin America.
Although the direct carbon dioxide emissions from combustion in the consumer/services sector and the industry sector have remained virtually constant over the last 25 years, the total carbon dioxide emissions that can be allocated to the activities of these sectors - in other words including the indirect emissions as a result of electricity consumption - have also increased in these sectors.
Policy
carbon dioxide emissions are covered by the UN Climate Treaty. carbon dioxide is the main greenhouse gas covered by the Kyoto Protocol. This protocol requires most industrialised countries, including those of Eastern Europe and the former Soviet Union, to limit their emissions of greenhouse gases in 2010 to the 1990 level.
Relevance
The UN Climate Treaty and the Kyoto Protocol include agreements about reducing emissions of carbon dioxide. The Protocol comes into effect when at least 55 countries ratify it and the carbon dioxide emissions of the ratifying industrialised countries in 1990 account for at least 55% of the total carbon dioxide emissions of all industrialised countries (the 'Annex I' countries). On 22 July 2002, that percentage was 36%.



