The troposphere is the layer of the temper that is closest to Earth’s surface. It extends from the Globe’s surface to an boilerplate height of about ten km. It is the densest part of the atmosphere likewise as the role of the atmosphere with the near weather. The height of the troposphere is referred to as the tropopause and its height varies with latitude as well every bit with the seasons. The tropopause is highest over the equator at nigh xx km. It is lowest over the polar regions at near seven km. It will also exist lower during the wintertime and higher during the summertime.
What is the departure between the atmosphere and the troposphere?
The troposphere is part of the temper, simply the atmosphere consists of more layers than simply the troposphere. In that location are 5 distinct layers within the atmosphere. The atmosphere refers to the entire envelope of gaseous particles surrounding the planet, extending from the troposphere to the exosphere, the outermost layer of the atmosphere.
What are three characteristics of the troposphere?
The air in troposphere decreases in temperature with increasing height above the surface. It is for this reason that the highest mountains volition have snow even at the equator while at that place might be rainforests or hot deserts at adjacent lower elevations. At the tropopause, the temperature can get every bit cold as -55 degrees Celsius.
The air in the troposphere is continually being warmed by rut radiating from Earth’s surface due to the absorption energy from sunlight. Hot air is less dumbo than common cold air. Every bit a result, the warmer airmasses will readapt the colder airmasses above them equally the warmer air rises and the colder air sinks to supersede the warmer air. This churning of warm and cold airmasses is one of the reasons why the troposphere has the most conditions and relatively turbulent air.
The troposphere is too the role of the atmosphere with the most moisture. For this reason, most of the clouds in Earth’s atmosphere are in the troposphere.
The stratosphere is the layer in the atmosphere above the troposphere. It starts at the tropopause at an boilerplate of 10 km in a higher place Globe’s surface and goes upward to about fifty km above the surface. The air in the stratosphere gets warmer with increasing height. For this reason, in that location is not a lot of turbulence in the stratosphere. Commercial rider planes volition fly in the lower stratosphere partly because the air tends to be calmer than in the troposphere. The acme of the stratosphere is called the stratopause.
The ozone layer (O3) is in the stratosphere. Ozone absorbs ultraviolet radiation from the sunday and converts information technology into rut. In this way, ozone likewise heats up the stratosphere.
Because the air in the stratosphere is adequately calm and stable, due to a lack of vertical convection, dust from volcanic eruptions, or impact events, and industrial pollutants from the troposphere that enter the stratosphere tin stay in the stratosphere for long periods of fourth dimension, from years to centuries. This tin atomic number 82 to a pregnant change in the global climate.
What are the other layers of the atmosphere?
Above the stratosphere are iii more distinct layers, the mesosphere, the thermosphere, and the exosphere.
The mesosphere is the side by side layer above the stratosphere. It extends from the stratopause, at almost 50 km, upward to almost 85 km. The air in the mesosphere is very thin compared to the lower atmosphere. The lower mesosphere has beneath 1% the air pressure at body of water level and the air pressure continues to drop off with increasing altitude in within the layer. The mesosphere too witnesses very cold temperatures, as cold as -xc degrees Celsius at the top of the layer. Cosmic material burning up in Globe’south atmosphere tends to become visible in the form of meteors in the mesosphere.
The thermosphere extends from the top of the mesosphere upwardly to between 500 and grand km higher up Earth’s surface. Many orbiting satellites are in the thermosphere. The temperatures in the thermosphere can get higher than 2000 degrees Celsius, but because the atmosphere is then thin, it has little event on objects passing through information technology. The aurora borealis and the aurora australis (the northern lights and the southern lights, respectively) occur in the thermosphere.
Atmospheric scientists disagree about whether the exosphere or the thermosphere represents the maximum extent of Globe’s atmosphere. The “air” in the exosphere is so thin that the environment of the exosphere is hardly distinguishable from that of ambient infinite. The exosphere has no clear upper purlieus, though according to some definitions, it extends out to between 100,000 km and 190,000 km from Earth.
Different the other layers, the ionosphere does not represent a singled-out layer, but rather, represents parts of the mesosphere and thermosphere that are dominated past ions. Ions are atoms and molecules which have a net positive or negative charge, ofttimes due to existence stripped of their electrons, in this case past high free energy radiations from the sun. The predominance of ions gives the ionosphere special properties.
What is the hottest layer of the atmosphere?
Based on temperature, the hottest layer in the temper is the thermosphere. The upper thermosphere can reach temperatures higher than 2000 degrees Celsius, though the layer is too thin for these temperatures to affect objects within it.
Similarities between the troposphere and stratosphere
The troposphere and the stratosphere are both part of the lower atmosphere and are both relatively thick compared to the upper atmospheric layers.
Differences between the troposphere and stratosphere
Although there are similarities betwixt the troposphere and the stratosphere, there are besides important differences. These differences include the following.
- The temperature gradient in the troposphere decreases with height, whereas the temperature gradient in the stratosphere increases with pinnacle.
- The air in the troposphere is continually convecting and overturning due to air existence heated past Earth’s surface, whereas the air in the stratosphere is stable and does not convect generally.
- The troposphere has pregnant clouds, whereas the stratosphere lacks clouds except for nacreous clouds near the poles.
- The troposphere is relatively humid, whereas the stratosphere is relatively dry.
Troposphere vs. stratosphere
The troposphere is the lowest level of the atmosphere. It extends from Globe’s surface to an average of 10 km in tiptop. The top of the troposphere is called the tropopause. It is highest at the equator at 20 km and everyman at the poles at 7 km. The troposphere contains almost of the moisture, almost of the atmospheric condition, and most of the clouds in the temper. The temperature in the troposphere decreases with increasing altitude. The stratosphere is merely above the troposphere. It extends from the tropopause to l km to a higher place Earth’s surface. The meridian of the stratosphere is called the stratopause. The stratospheric temperature slope is positive, so that the temperature increases with increasing acme above Earth’south surface. Within the stratosphere is the ozone layer. The layers above the stratosphere include the mesosphere, which contains some of the coldest temperatures in the atmosphere, the thermosphere, which contains some of the hottest temperatures in the atmosphere, and the exosphere, which does non have a distinct boundary merely fades abroad into infinite with increasing distance from Earth. The troposphere and the stratosphere are similar in that they both form the lower temper and are relatively dense compared to the upper atmospheric layers. They differ in of import ways too. The troposphere has a negative temperature slope, is constantly convecting, has arable clouds and has arable moisture. The stratosphere has a positive temperature gradient, has mostly stable layers of air, has no clouds, except for at the poles, and is adequately dry.
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