which gas is released by aeroplane and rockets
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For chemical rockets often the propellants are a fuel such as liquid hydrogen or kerosene burned with an oxidizer such as liquid oxygen or nitric acid to produce large volumes of very hot gas.
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Aircraft emit staggering amounts of CO2, the most prevalent manmade greenhouse gas. In fact they currently account for some 11 percent of CO2 emissions from U.S. transportation sources and 3 percent of the United States’ total CO2 emissions. All told, the United States is responsible for nearly half of worldwide CO2emissions from aircraft.
In addition to CO2, aircraft emit nitrogen oxides, known as NOx, which contribute to the formation of ozone, another greenhouse gas. Emissions of NOx at high altitudes result in greater concentrations of ozone than ground-level emissions. Aircraft also emit water vapor at high altitudes, creating condensation trails or “contrails" — visible cloud lines that form in cold, humid atmospheres and contribute to the warming impacts of aircraft emissions. The persistent formation of contrails is associated with increased cirrus cloud cover, which also warms the Earth's surface. Aircrafts' high-altitude emissions have a greater global warming impact than they would if the emissions were released at ground level.
A key study focus is the climate impact of major rocket-engine emissions: carbon dioxide, water, black carbon and alumina particles discharged by solid rocket-booster motors.
In addition to CO2, aircraft emit nitrogen oxides, known as NOx, which contribute to the formation of ozone, another greenhouse gas. Emissions of NOx at high altitudes result in greater concentrations of ozone than ground-level emissions. Aircraft also emit water vapor at high altitudes, creating condensation trails or “contrails" — visible cloud lines that form in cold, humid atmospheres and contribute to the warming impacts of aircraft emissions. The persistent formation of contrails is associated with increased cirrus cloud cover, which also warms the Earth's surface. Aircrafts' high-altitude emissions have a greater global warming impact than they would if the emissions were released at ground level.
A key study focus is the climate impact of major rocket-engine emissions: carbon dioxide, water, black carbon and alumina particles discharged by solid rocket-booster motors.
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