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The atmosphere of the Earth is a narrow band of air that is separated into many layers based on temperature. ‘Life on Earth’ would not be possible without its protective blanket, which protects us from the sun’s heat and radiation even while containing the air we breathe. The atmosphere protects life on Earth from incoming UV radiation, keeping the planet warmer through shielding and preventing high temperatures at all times of the day and night.
The sun heats all layers of the atmosphere, which causes them to connect and impact airflow and weather systems worldwide. This paper will cover the concept of atmosphere and composition of air with the layers of the atmosphere.
What is an atmosphere?
The atmosphere is a gaseous substance that surrounds the planet. The presence of life on Earth is made possible by the Earth’s atmosphere. Aside from providing something to breathe, it shields humans from most of the Harmful ultraviolet or UV radiation, heats the Earth’s surface by roughly 33° C or 59° F via the ‘greenhouse effect,’ which helps to prevent drastic temperature variations between day and night. Other ‘planets in our solar system’ have ambiance, but none have the same ratio of gases or the same interlayer as Earth’s.
The atmosphere of the Earth is not the only one found on other planets. All of the planets in our solar system, as well as a few moons, have atmospheres. Clouds, rain, wind, and intense storms are all possible. Scientists have recently begun detecting hints of planet atmospheres in distant solar systems. As one ascends from the planet’s surface, the atmosphere becomes less dense and has lower pressure. It finally gives way to space’s emptiness.
What is the composition of air?
Nitrogen, argon, and oxygen are the three principal elements of the Earth’s atmosphere. Water vapour accounts for about 0.25 percent of the mass of the atmosphere. Water vapour (a greenhouse gas) concentrations vary dramatically from roughly 10 ppm by mole fraction in the coldest regions of the atmosphere to as much as 5% by molar concentration in hot, moisture condenses masses, and concentration of other atmospheric gases are often given in terms of dry air. Other greenhouse gases, primarily nitrous oxide, methane, carbon dioxide, and ozone, are among the remaining gases, often referred to as trace gases. Aside from argon, which has already been discussed, other noble gases such as helium, neon, krypton, and xenon are present.
Many other chemical substances can be found in trace levels in filtered air. Many natural substances, such as pollen, mineral and organic dust, sea spray, spores, and volcanic ash, may be present locally and seasonally changeable tiny amounts like aerosols in an unfiltered air sample. Various industrial pollutants, such as fluorine compounds, chlorine, and elemental mercury vapour, may also be present as aerosols or gases. Sulphur compounds such as sulphur dioxide (SO2) and hydrogen sulphide can be found in nature or due to industrial air pollution.
What are the layers of the Earth’s atmosphere?
The atmosphere is an integral part of Earth’s interrelated physical systems. The atmosphere refers to the layer of gases that covers a planet and other celestial bodies. The atmosphere of the Earth is composed of approximately 21% O2, 78% N, and 1% other gases. These gases are found in layers known as the “troposphere, stratosphere, mesosphere, thermosphere, and exosphere,” each with its own set of characteristics such as temperature and pressure.
There are no such things as the “top” of the atmosphere. The air becomes so thin at elevations between 100 and 120 km that it might be regarded as the barrier separating the atmosphere and space for many purposes. However, atmospheric gas remains can be discovered thousands of metres just above Earth’s surface.
Animals live in the troposphere, the lowest layer of the earth’s atmosphere in which most clouds originate and almost all weather occurs. Many jet aircraft fly in the stratosphere, containing jet streams and the ozone layer. Temperatures in the mesosphere are at their lowest because there aren’t enough air molecules to absorb heat energy. The sky turns from blue to black because there are so few atoms for light to bounce off of in the mesosphere. The most significant component of the Earth’s atmosphere that filters much of the hazardous radiation that reaches Earth from the sun, the thermosphere, is situated the farthest away from the surface. The exosphere is a zone that exists between the Earth’s atmospheric level and space.
Conclusion
The Earth’s atmosphere, often called air, is the layer of gases held together by gravitation surrounding the planet and creating its planetary atmosphere. The layers of the earth atmosphere support life by providing the pressure that allows liquid water to remain on the Earth’s crust, collecting ultraviolet solar radiation, heating the surface through thermal mass (greenhouse effect), and decreasing high temperatures between day and night.
