The charts illustrate global greenhouse gas emissions in 2002 and forecast those in 2030 in relation to countries and pollutants.
Generally speaking, there are two trends. The first is the successful effort of OECD towards greenhouse gas reduction; in contrast, it is expected to see an expansion of heat-trapping gas in low and middle income countries. The other is the anomalous projected upward spiral in polluting gas generated by all sectors in the future.
Examining the world’s total gas emissions, in 2002, the developing countries accounted for 38%, less than the 52% of the developed group. Those figures is projected to reverse after about three decades. The share of the developing will increase to 48%, which make them the nations with the worst air quality. However, OECD will sink to only 43%, decreasing approximately the same amount as the addition of the developing economies. While the third world countries will accumulate more emissions than the OECD, transition economies will remain at around the same past proportion in the future time, about one-tenth, being the areas produce the least amount of harmful gas in both years.
Moving to the the causes of worldwide carbon dioxide, while the combustion and other sectors generated the lowest levels of CO2, less than 2 billion tons and will differ slightly in 2030, the remainder big three components’ emissions will skyrocket, yet they will remain in ranks. Industries will be the most harmful sector, being responsible for more than 10 billion tons, up 2 billion tons. The two smaller sector, transportation and consumer, will churn out emissions at 8 and 6 billion tons; both will be more than double their initial amount, growing faster than industry.