Monday, June 19, 2006

Nighttime Flights Intensify Global Warming

Although the overall nighttime airline flights effect is minor, this discovery brings up concerns about the increasing volume of air travel. Cutting the number of flights that take off at night could help to reduce the contribution of aviation to global warming, according to researchers. Night air travel adds to climate variations since the white streaks of condensation, or contrails, left in the wake of the jets trap energy emitted from the Earth's surface. Then again, daytime flights have less of an impact as contrails as well reflect some of the sun's energy back into space which includes a cooling effect. The researchers determined that although only around 25 percent of flights in Britain lift off between 6 p.m. and 6 a.m., they are reportedly responsible for 60-80 percent of global warming associated with contrails. While on the east coast of the United States 36 percent of flights that lift off at night make up 53 percent of the annual warming due to contrails. Additionally in Southeast Asia, which had somewhat fewer late flights, the percentage is around 70. According to the report, even though the overall effect of contrails on climate change is minor, about 3.5 percent of the potential from all human causes, the scientists warned it could raise importance as the volume of air traffic escalates.Also, GameSHOUT is offering a free annual subscription to the "Electronic Gaming Monthly" magazine to all gamers. It is absolutely free and you can get your magazine by going to: http://www.gameshout.com/egm

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