What is the temperature of tropopause?
As the density of the gases in this layer decrease with height, the air becomes thinner. Therefore, the temperature in the troposphere also decreases with height in response. As one climbs higher, the temperature drops from an average around 62°F (17°C) to -60°F (-51°C) at the tropopause.
What is the height of the tropopause?
36,000 feet Description. The tropopause occurs at approximately 20,000 feet over the poles and at approximately 60,000 feet above the equator. The International Standard Atmosphere (ISA) assumes that the average height of the tropopause is 36,000 feet.
What is the temperature of tropopause at equator?
about minus 800C The air temperature at the tropopause is about minus 800C over the equator and about minus 45oC over the poles. The temperature here is nearly constant, and hence, it is called the tropopause.
What is tropopause high and low?
The height of the tropopause varies with latitude, season of the year, and the weather conditions. The tropopause is lowest over the poles (approximately 26 000 ft or 8 km) and highest over the equator (approximately 52 000 ft or 16 km). Its average height is 36 090 ft (11 km) at about 45° latitude.
Where is the height of tropopause the highest?
The highest average tropopause is over the oceanic warm pool of the western equatorial Pacific, about 17.5 km high, and over Southeast Asia, during the summer monsoon, the tropopause occasionally peaks above 18 km.
Why does the height of the tropopause vary?
This site says that the tropopause is at a higher altitude at the equator because: Gravitational force from a point is higher closer to it and reduces with increasing distance from it. Because the Earth itself is broader at equator, the equator experiences less gravity allowing air to reach bigger heights.
Why is temperature constant in tropopause?
This range is due to the temperature differences between the tropics and poles. The warm surface temperatures and turbulent mixing over the tropics help to push the troposphere's boundary upward (Lutgens 19). The tropopause extends above the troposphere. Temperature remains constant with height in this layer.
What is troposphere and tropopause?
The troposphere is the lowest and thickest layer of the atmosphere. In contact with Earth's surface, the troposphere is heated by solar illumination and conduction. The tropopause is the boundary layer between the troposphere and the stratosphere .
Why is the height of tropopause over the equator?
The tropopause is higher at the equator than at the poles because of several reasons. Some of these are: High insolation and strong convection currents occur over the Equator. Air is less dense at Equator.
Where is tropopause highest?
The highest average tropopause is over the oceanic warm pool of the western equatorial Pacific, about 17.5 km high, and over Southeast Asia, during the summer monsoon, the tropopause occasionally peaks above 18 km. In other words, cold conditions lead to a lower tropopause, obviously because of less convection.
Why is tropopause colder at equator?
The tropopause is higher at the equator than at the poles because of several reasons. Some of these are: High insolation and strong convection currents occur over the Equator. Air is less dense at Equator.
What happens to the temperature as you go higher in the troposphere?
Temperature varies with altitude, as follows: In the troposphere, temperature decreases as altitude increases. In the stratosphere, temperature generally increases as altitude increases due to the increasing absorption of ultraviolet radiation by the ozone layer.
What is the temperature of the tropopause quizlet?
The tropopause separates the stratosphere from the troposphere. The tropopause has an approximate height of 11 kilometers and an approximate temperature of -60℃. The stratosphere is the second innermost layer of the earth's atmosphere.
Why is the tropopause higher in summer?
Deep convection (thunderstorms) in the Intertropical Convergence Zone, or over mid-latitude continents in summer, continuously push the tropopause upwards and as such deepen the troposphere. This is because thunderstorms mix the tropospheric air at a moist adiabatic lapse rate.
Why height of tropopause is higher at equator?
This site says that the tropopause is at a higher altitude at the equator because: Gravitational force from a point is higher closer to it and reduces with increasing distance from it. Because the Earth itself is broader at equator, the equator experiences less gravity allowing air to reach bigger heights.
Why does temperature decrease with height in troposphere?
In the troposphere, the temperature generally decreases with altitude. The reason is that the troposphere's gases absorb very little of the incoming solar radiation. Instead, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection.
What is the tropopause quizlet?
Tropopause. The boundary between the troposphere and stratosphere, usually characterized by an abrupt change of lapse rate. In the ISA, the height of the tropopause is about 36,000 ft MSL. The height of the tropopause varies with season, latitude, and the presence or absence of local weather disturbances.
What is the approximate height and temperature of the stratosphere?
The stratosphere is the second major strata of air in the atmosphere. It extends above the tropopause to an altitude of about 30 miles (50 km) above the planet's surface. The air temperature in the stratosphere remains relatively constant up to an altitude of 15 miles (25 km).
Why is the tropopause colder at the equator?
The tropopause is higher at the equator than at the poles because of several reasons. Some of these are: High insolation and strong convection currents occur over the Equator. Air is less dense at Equator.
What does the tropopause do?
The tropopause is the boundary that demarcates the troposphere from the stratosphere, and is the part of the atmosphere where there occurs an abrupt change in the environmental lapse rate (ELR), from a positive rate in the troposphere to a negative rate in the stratosphere.
What is the temperature at the troposphere quizlet?
At the top of the troposphere, the temperature stops decreasing and stays at about —60°C. (Water here forms thin, feathery clouds of ice.) NO weather occurs in the stratosphere.
What is the approximate height of the atmosphere or troposphere quizlet?
That portion of the atmosphere between the earth's surface and approximately 36,000 ft MSL. The average troposphere is characterized by decreasing temperature with height, and is the atmospheric layer where the great majority of clouds occur.
What is the approximate height and temperature of the thermosphere?
Because of this, the top of the thermosphere can be found anywhere between 500 and 1,000 km (311 to 621 miles) above the ground. Temperatures in the upper thermosphere can range from about 500° C (932° F) to 2,000° C (3,632° F) or higher. The aurora, the Northern Lights and Southern Lights, occur in the thermosphere.
What causes the temperature to decrease with height in troposphere?
In the troposphere, the temperature generally decreases with altitude. The reason is that the troposphere's gases absorb very little of the incoming solar radiation. Instead, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection.