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What determines tropopause height?
The height of the tropopause depends on the location, notably the latitude, as shown in the figure on the right (which shows annual mean conditions). It also depends on the season (1, 2). Thus, it is about 16 km high over Australia at year-end, and between 12 – 16 km at midyear, being lower at the higher latitudes.
Why does tropopause height vary?
The height of the tropopause varies with latitude, season of the year, and the weather conditions. As the temperature decreases with height, so the temperature at the tropopause over the poles will be higher than over the equator because the tropopause is closer to the ground here.
What is the height and 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 in KM?
The upper boundary of the layer, known as the tropopause, ranges in height from 5 miles (8 km) near the poles up to 11 miles (18 km) above the equator. Its height also varies with the seasons; highest in the summer and lowest in the winter.
At what height does the troposphere end?
approximately 17 kilometres
The tropopause is a thermodynamic gradient-stratification layer, that marks the end of the troposphere, and lies approximately 17 kilometres (11 mi) above the equatorial regions, and approximately 9 kilometres (5.6 mi) above the polar regions.
Is the troposphere the same height everywhere?
The troposphere is the lowest layer of Earth’s atmosphere. The height of the top of the troposphere varies with latitude (it is lowest over the poles and highest at the equator) and by season (it is lower in winter and higher in summer).
What are the two main features of troposphere?
The troposphere varies in thickness and height around the world. At its highest point, the troposphere extends 12 miles into the air. At its lowest point, this layer reaches 4 miles above sea level. Regardless of height, the troposphere facilitates temperature regulation and cloud formation.
What is troposphere short answer?
The troposphere is the lowest layer of Earth’s atmosphere. Most types of clouds are found in the troposphere, and almost all weather occurs within this layer. The troposphere is by far the wettest layer of the atmosphere; all of the layers above contain very little moisture.
What is the temperature of tropopause?
Typically, the tropopause temperature is -50°C over the poles and -80°C over the equator. Another feature of the tropopause is that, rather than show a gradual change in height between the equator and the poles, there are breaks in the tropopause where large temperature differentials occur.
What is the height range of the troposphere?
The Troposphere. The troposphere is the lowest layer of Earth’s atmosphere. The troposphere starts at Earth’s surface and goes up to a height of 7 to 20 km (4 to 12 miles, or 23,000 to 65,000 feet) above sea level.
What is the height of the stratosphere?
The height of the stratosphere varies depending on what latitude we are talking about: at moderate latitudes, the stratosphere begins about 10 km (6 mi) above the surface and ends at 50 km (31 mi), at the poles, it starts at only 8 km (5 mi) altitude. This is because the ground at the poles is so cold,…
What does tropopause mean?
tropopause – the region of discontinuity between the troposphere and the stratosphere. layer – a relatively thin sheetlike expanse or region lying over or under another.