Cause Of Current Warming: Greenhouse Gases: Sources

• Global GHG emissions due to human activities have grown since pre-industrial times, with an increase of 70% between 1970 and 20046

• The largest growth in GHG emissions between 1970 and 2004 has come from energy supply, transport and industry, while residential and commercial buildings, forestry (including deforestation) and agriculture sectors have been growing at a lower rate

• Global atmospheric concentrations of CO2, CH4 and N2O have increased remarkably as a result of human activities since 1750 and now far exceed pre-industrial values determined from ice cores spanning many thousands of years

• As indicated on the left graphics, more than half of global GHG emissions come from CO2 of which annual emissions have grown between 1970 and 2004 by about 80%

• Deforestations is the second largest source of CO2 emissions

• Energy supply and Industry remain the 2 major sources of GHG

• Forestry, agriculture and transport are also major sources

Source of Information : Climate Change: A Silent Threat by Sylvain Richer de Forges

Cause Of Current Warming: Greenhouse Gases: Sources