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.
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.Learn More
Lightning strikes reach the ground on Earth as much as 8 million times per day or 100 times per second, according to the National Severe Storms Laboratory. Out of all the lightning strikes in the world, the United States accounts for about 20 million of the total number of lightning strikes each year.Full Answer >
Air pressure, the force exerted on a mass by the weight of air particles, is measured in either inches of mercury or in millibars, represented by inHg and mb, respectively. One standard atmosphere, represented by the symbol atm, is equal to 29.92 inHg, or 1013.25 mb.Full Answer >
The mesosphere, which is the third innermost layer of the Earth's atmosphere, is comprised largely of nitrogen, oxygen and carbon dioxide. Its chemical composition differs very little from that of the innermost layers of atmosphere, with the approximate composition being 79 percent nitrogen, 20 percent oxygen and 1 percent carbon dioxide and other trace gases. The density of these gases is lower in the mesosphere than in the lower atmosphere.Full Answer >
The layers of the atmosphere are the exosphere, thermosphere, mesosphere, stratosphere and troposphere. The troposphere is the layer that is closest to the surface of the Earth, whereas the exosphere is the furthest layer from Earth's surface and the closest layer to outer space.Full Answer >