New Delhi: With the aviation sector going through an exceptional development rate particularly in Asia-Pacific area and more significantly in India and China, ecologists reveal that the industry is turning the fastest growing contributor to global warming.

In a release, Eurorail group alleges, “Last year people took more than two billion journeys on scheduled airlines worldwide, up four per cent over 2005, according to the International Civil Aviation Organization. IATA, the International Air Transport Association, predicts another 500 million passengers will take to the skies by 2010. With jet aircraft emitting 23 kilograms of CO2 per 100 passenger kilometres, that's a lot of carbon dioxide being dumped into the atmosphere.”

Conservationists point out that the impact on global warming is more since the planes travel at very high altitudes.

K Srinivas, Climate Campaigner, Greenpeace, an international NGO working against global warming says, “The logic being that since the emission of CO2 in huge amounts and at such high altitude will have a direct impact on the green house effect leading to increase in global warming.”

Others NGO’s also identify that boom in the aviation market is a main trouble since global warming is on the increase.

"The average plane releases close to one tonne of carbon dioxide for each passenger it carries from London to New York. Scientists say that high-altitude emissions are more damaging to the environment. Nitrogen dioxide from airline engines leads to formation of ozone and they are worried about the impact of cirrus clouds formed because of airline travel, which they believe in turn contribute to global warming," says Sunita Narain, Director, Centre for Science and Environment.