Q:

What is the troposphere made up of?

A:

Quick Answer

The troposphere is made up largely of nitrogen and oxygen with trace amounts of argon, carbon dioxide and hydrogen ozone. The troposphere also contains the majority of the water vapor in the atmosphere.

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Up to 75 percent of the weight of the atmosphere is found in the troposphere, weighing more than 14 pounds per square inch. The majority of this mass is gases. Seventy-eight percent of the air in the troposphere is made up of nitrogen. Twenty-one percent is made up of oxygen. One percent is argon, while there are small amounts of other gases such as hydrogen ozone and carbon dioxide.

The troposphere is the lowest layer of the Earth's atmosphere, containing most of the breathable gas as well as water vapor. Because 99 percent of the water vapor in the atmosphere is found in the troposphere, all weather occurs in it. The water vapor forms clouds, providing the world with precipitation in the form of rain or snow, which in turn depends on the temperature of the air. The heat from sunlight is absorbed by the Earth and radiated into the atmosphere. The molecules of water vapor and other gases present in the troposphere absorb and reflect this heat back to the ground, allowing the global temperature to remain fairly stable.

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Related Questions

  • Q:

    What are characteristics of the troposphere?

    A:

    The troposphere is the lowest layer of Earth's atmosphere, which contains almost all of the weather, 99 percent of the water vapor and as much as 80 percent of the atmosphere's mass. The troposphere is 12 miles thick at the equator and four miles thick at the poles. The temperature drops from roughly 62 F at the surface to minus 60 F at the upper boundary.

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  • Q:

    What happens in the troposphere?

    A:

    According to the University of California in Santa Barbara, all weather occurs in the troposphere. It is the lowest level of the Earth’s atmosphere, and it is bonded on the top by a layer of air called the tropopause.

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  • Q:

    What gases are found only in the troposphere?

    A:

    Carbon dioxide, water vapor, oxygen and methane are gases that are found almost exclusively in the troposphere. The troposphere is the lowest layer of Earth’s atmosphere, comprising 75 percent of the total mass of the atmosphere.

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  • Q:

    What causes most of the heating of the troposphere?

    A:

    The heating of the troposphere is caused by convection currents. Convection currents are created when the sun warms the air currents at the planet's equator to a greater degree than it does at the planet's poles.

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