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Arbitrary base of comparison. Upper 70s are annoyingly loud to some people. Conversation in restaurant, office, background music, Air conditioning unit at feet. So at 10 meters the sound is 80 db. At m the intensity is down to 60 db, and so on. Every day we hear a variety of sounds. Sounds that are too loud or loud sounds over a long time, can damage your hearing. The loudness of sounds is measured in decibels dB ….
Decibels Explained. How does aviation affect the environment? Why is noise pollution bad for the environment? What is aviation pollution? What is the best way to reduce aircraft noise? Why do planes not sound at night? Are planes louder taking off or landing? What is the loudest plane in the world? XFH How does a plane stop after landing? Why do planes sound so loud? Are aircraft getting quieter? How many decibels is too loud?
How loud is a jet? How loud can a human yell? Why are jet engines so loud? This type of research can identify whether there are any potential benefits in altering operational behaviour. More work is being done in this area , and the aviation industry is assisting with research into the effects of contrails on climate change, including putting high-altitude atmospheric testing equipment on some passenger aircraft.
There are many references to aviation having a greater effect than other industries because of the height at which the emissions are released. The most significant greenhouse gas, CO2, does not have any additional impact due to difference in altitude, the impact is the same. However, other emissions such as nitrogen oxide and water vapour can have greater effect at higher altitudes.
Recent research suggests that aviation CO2 emissions should be multiplied by 1. However, it is important to realise that most other emitters also release non-CO2 gasses and require a multiplier to determine their overall climate change impact also known as radiative forcing. The rate for road transport, for example, is 1.
However, some experts say using a multiplier wh en calculating the emissions of individual flights is inappropriate , as it is a tool to describe longer-term impacts.
From these, negative climate changes, noise, water pollution, radiation exposure and air pollution are possible environmental effects. The aviation industry greatly contributes to climate change as the major environmental effect due to its emissions.
Greenhouse gases, especially carbon dioxide which is produced in large scale, are linked to radioactive forcing and global warming. Other greenhouse gases released are carbon monoxide, Nitrogen dioxide and nitric oxide. Other contributing factors to climate change as a result of aircrafts operations are sulfate and soot particles, incompletely burnt hydrocarbons and water vapour. The adverse climatic conditions in turn negatively affect aviation in terms of airlines navigation possibilities.
In aviation, air pollution is as a result of lead and particulate emissions. According to the Environmental Protection Agency, the use of leaded aviation fuel leads to an emission of lots of lead. Lead has a multisystem effect to the human body if ingested or inhaled. It can cause autism, low IQ and learning problems when it affects the nervous system. Other systems affected are the immune and cardiovascular system.
Ultrafine particle emissions interfere with air quality and can cause diverse respiratory problems.
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