7.2 air emissions

 Airports are a necessity in major city’s now a days. They help us get to our destinations but also can be very harmful to the environment in many different ways like from the noise pollution they cause from the sounds of all the planes flying in and out of the airport all day. And also, with their pollution to the air with the gasses that the planes emit into the air when flying. These cause changes to the global climate but also hurt the local air quality. Although the impact of air pollution is usually small compared to non-aviation related sources it is still bad to have any at all. There are standards for aviation air pollution to try to keep it under control. Each engine must undergo a certification test to make sure it is below the limit set forth by the ICAO or international civil aviation organization.  The ICAO measures the emissions of the engines in phases, taxi, take-off, climb and approach. And with these they use a equation to figure out how much gas they are emitting into the atmosphere. There are different allowable levels for each of these phases the limits get less and less as the plane gets higher from sea level. The levels are very low and hopefully with time we can continue to improve on them and make less and less of an impact on our ecosystem. but until then motoring what we do put out and limiting it is the best we can do. 





References 

Visser, H. G., Hebly, S. J., & Wijnen, R. A. A. (2009). Management of the Environmental Impact at Airport Operations. Macmillan Publishers.

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