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The only exception is when a commercial jet is taking off or landing, in which case it will obviously reach lower altitudes. Traveling at high altitudes also means that airplanes planees avoid bad weather that is typically found in the lower regions of the atmosphere. When the oxygen molecules split, they produce radicals that combine with molecular oxygen and then form ozone. Temperatures rise as one moves upward through the stratosphere. This layer is fo above the troposphere and below the mesosphere.

The stratosphere is separated from the troposphere by a layer called the tropopause. This is the place where the temperature inversion starts to happen. The height of the stratosphere changes depending on the part of the planet. It can be 66, feet high near the equator, but it gets significantly lower when we approach the poles. There, the stratosphere begins at heights of just 23, feet.

The temperatures in the stratosphere vary greatly but are always much colder than the surface of our planet. However, the temperatures in this layer are known to vary greatly depending on the season we are in. During the winter, they can get extremely low. The winds blowing in the stratosphere are much stronger than those in the troposphere. They can reach speeds of up to miles per hour.

The stratosphere is the layer of the atmosphere where we can find the ozone layer. The ozone layer forms when molecular oxygen absorbs the extremely high amounts of energy coming from the Sun.

This happens at wavelengths that are shorter than nanometers. When the oxygen molecules split, they produce radicals that combine with molecular oxygen and then form ozone.

Ozone gets photolyzed faster than molecular oxygen. It also has a stronger absorption because of the more intense solar emission at its wavelengths. The ozone layer is also known as the ozone shield, and it absorbs the majority of the ultraviolet radiation coming from the Sun. We mainly find the ozone layer in the lower parts of the stratosphere, although this varies depending on the geographical location.

The majority of commercial airlines fly at heights between 30, and 39, feet, which makes up the lower parts of the stratosphere. Helicopters and light aircraft typically fly in the troposphere. Light aircrafts are unable to operate at higher altitudes because they lack pressurized cabins. Therefore, they stay within a range of about 10, feet.

Flying to higher altitudes would require pilots to wear functional oxygen masks to avoid losing consciousness. Commercial aircraft typically prefer to travel in the stratosphere which has less turbulence and air traffic. Flying in the stratosphere also means that pilots have more time to handle the difficult situation compared to those flying at lower altitudes.

Around the world, numerous regulations govern low safe altitudes in which aircraft can travel. The laws mainly apply to light aircraft as opposed to airliners. Generally, it is considered unlawful to fly below 1, feet in an area with buildings and feet above any vehicle, person, or structure.

Such laws ensure the safety of aircraft, people, and property on the ground. The regulations are also put in place due to environmental concerns. Pilots have to ensure that their aircraft is high enough to allow them to clear a congested area when the airplane experiences engine failure.

The regulations, however, do not affect take-offs and landings as governed by flight paths.

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