Friday, January 8, 2010

What is one thing that makes each atmospheric layer unique in comparison to the other layers?

Exosphere - has free-moving particles that may migrate into and out of the magnetosphere or the solar wind.


Ionosphere - influences radio propagation to distant places on the Earth


Thermosphere - has temperature increasing with height


Mesosphere - where most meteors burn up when entering the atmosphere


Stratosphere - contains the ozone layer


Troposphere - the lowest layer of the atmosphere; contains roughly 80% of the total mass of the atmosphere








The temperature of the Earth's atmosphere varies with altitude; the mathematical relationship between temperature and altitude varies among five different atmospheric layers (ordered highest to lowest, the ionosphere is part of the thermosphere):





Exosphere: from 500 – 1000 km (300 – 600 mi) up to 10,000 km (6,000 mi), free-moving particles that may migrate into and out of the magnetosphere or the solar wind.


exobase boundary


Ionosphere: is the part of the atmosphere that is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth. It is located in the thermosphere and is responsible for auroras.


thermopause boundary


Thermosphere: from 80 – 85 km (265,000 – 285,000 ft) to 640+ km (400+ mi), temperature increasing with height.


mesopause boundary


Mesosphere: From the Greek word ';μέσος'; meaning middle. The mesosphere extends from about 50 km (160,000 ft) to the range of 80 to 85 km (265,000 – 285,000 ft), temperature decreasing with height. This is also where most meteors burn up when entering the atmosphere.


stratopause boundary


Stratosphere: From the Latin word ';stratus'; meaning a spreading out. The stratosphere extends from the troposphere's 7 to 17 km (23,000 – 60,000 ft) range to about 50 km (160,000 ft). Temperature increases with height. The stratosphere contains the ozone layer, the part of the Earth's atmosphere which contains relatively high concentrations of ozone. ';Relatively high'; means a few parts per million—much higher than the concentrations in the lower atmosphere but still small compared to the main components of the atmosphere. It is mainly located in the lower portion of the stratosphere from approximately 15 to 35 km (50,000 – 115,000 ft) above Earth's surface, though the thickness varies seasonally and geographically.


tropopause boundary


Troposphere: From the Greek word ';τρέπω'; meaning to turn or change. The troposphere is the lowest layer of the atmosphere; it begins at the surface and extends to between 7 km (23,000 ft) at the poles and 17 km (60,000 ft) at the equator, with some variation due to weather factors. The troposphere has a great deal of vertical mixing due to solar heating at the surface. This heating warms air masses, which makes them less dense so they rise. When an air mass rises the pressure upon it decreases so it expands, doing work against the opposing pressure of the surrounding air. To do work is to expend energy, so the temperature of the air mass decreases. As the temperature decreases, water vapor in the air mass may condense or solidify, releasing latent heat that further uplifts the air mass. This process determines the maximum rate of decline of temperature with height, called the adiabatic lapse rate. It contains roughly 80% of the total mass of the atmosphere. 50% of the total mass of the atmosphere is located in the lower 5 km of the troposphere.


The average temperature of the atmosphere at the surface of Earth is 15 °C (59 °F).What is one thing that makes each atmospheric layer unique in comparison to the other layers?
Troposphere(8-16Km):90% of the weather happens in this layer as almost most of the moisture content(water vapour) is found here only.


Stratosphere (between tropopause and 50 km):-The ozone layer which absorbs the harmful ultra violet rays of the sunlight is found here.


Mesoshere(50 -80 km):- The coldest temperature of the atmosphere is found at the top of this layer.Meteors entering the earth are burnt here.


Thermosphere(80 - 600 km):-This layer contains a region called ionosphere where atoms and molecules become electrically charged (ionised) by solar radiation which generates heat.Some radio transmissions from earth are reflected back as the famous radio-reflecting layers known as Heavyside and Appleton layers are found in this layer.


Exosphere (above 600 km):- This is the outermost layer of the atmosphere where the temperature increases continuously and hence the highest temperture of the atmosphere is found here.Lack of gravity in this layer allows gases to escape into space.What is one thing that makes each atmospheric layer unique in comparison to the other layers?
Different gasses make up each layer. They also have different lapse rates, which defines the rate of change in temperature with height.
that big *** hole

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