Sunday, March 1, 2009

Air transport and the Enviroment

Aviation and air travel affects the environment . Aircraft produce engine noises,particles,gases and contribute to global climate change.Although in recent years aircraft have been built with cleaner engines and been made more fuel efficient the global increase in air travel has led to an increased in aviation pollution. In the EU air travel gas emissions have increased by 87 percent between 1990 and 2006.


Planes release carbon dioxide into the atmosphere. This is leading to global warming .


Aircraft contribute to climate change in four ways:






  • Carbon dioxide - this is the most significant gas produced from in flight aircraft.



  • Oxides of nitrogen - this gas is only produced by planes flying at very high altitudes.


  • Water vapour - large aircraft produce water vapour at high altitudes. These trail behind to form contrails or condensation trails


  • Particulates



Air transport contributes 2 percent of global warming. This could reach 3 percent by 2050. The aviation industry is working towards a carbon neutral growth. New planes entering today's fleet are 70 percent more fuel efficient then planes 40 yrs ago. The A380 consume 3 litres per passenger per 100km.Also new aircraft are 75 per cent quieter then planes 40 years ago. In the future air travel will become cleaner , quieter and of course greener.


(http://upload.wikimedia.org/wikipedia/commons/8/85/Contrails.jpg)