Where Is The Tropopause The Highest?

The troposphere is thicker over the equator than the poles because the equator is warmer. Heat differential on the planet’s surface causes convection currents to flow from the equator to the poles. … Thus the simple reason is thermal expansion of the atmosphere at the equator and thermal contraction near the poles.

What is the average highest of the troposphere?

From the planetary surface of the Earth, the average height of the troposphere is 18 km (11 mi; 59,000 ft) in the tropics; 17 km (11 mi; 56,000 ft) in the middle latitudes; and 6 km (3.7 mi; 20,000 ft) in the high latitudes of the polar regions in winter; thus the average height of the troposphere is 13 km (8.1 mi;

How high up is the tropopause?

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.

Why is the tropopause highest in the tropics?

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.

Which is called tropopause limit?

The tropopause is traditionally defined by meteorologists as the lowest level at which the rate of decrease of temperature with respect to height (normally about 6 K km1 in the troposphere) decreases to 2 K km1, and the average from this level to any level within the next 2 km does not exceed 2 K km1.

What happens in the tropopause?

The troposphere is the region where nearly all water vapour exists and essentially all weather occurs. …of the troposphere, called the tropopause, corresponds to the level in which the pattern of decreasing temperature with height ceases. It is replaced by a layer that is essentially isothermal (of equal temperature).

What does the tropopause do?

The tropopause minimum acts as a barrier^ between the troposphere and stratosphere because mixing and heat transport by convection can only occur when temperature decreases with height. The troposphere – with convection allowed – is turbulent and well mixed.

What is the average height of the troposphere answer?

The troposphere begins at the Earth’s surface and extends from 4 to 12 miles (6 to 20 km) high. The height of the troposphere varies from the equator to the poles. At the equator it is around 11-12 miles (18-20 km) high, at 50 °N and 50 °S , 5½ miles and at the poles just under four miles high.

Is the tropopause higher at the equator?

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.

Why does the height of the tropopause vary according to the seasons?

The height of the tropopause varies according to latitude and seasons because in the winter, the atmosphere becomes shallower and, in the summer,, the atmosphere becomes thicker. … Warmer air expands, thus the tropopause will be higher in altitude during the summer.

How do meteorologists determine the height of the tropopause?

To locate the tropopause, we just need to look for the bottom of the very thick isothermal layer that is near a pressure altitude of 40 to 20 kPa. Figure 5.18 Sample atmospheric sounding having two isothermal layers and one temperature inversion.

In which region is the tropopause encountered at the highest altitude?

The tropopause is at its highest altitudes in the polar regions and its lowest in the tropics. The polar and subtropical jetstreams are located over North America only and are found in lower troposphere, near Earth’s surface.

What is the height and temperature of tropopause?

tropopause: about 12-18 km about –60 stratopause: about 46-54 km about –2 to 0 mesopause: about 85-90 km about –90 4. The temperature increases in the stratosphere due to ozone layer capturing ultraviolet radiation. The temperature decreases in the mesosphere since there is no ozone and the amount of air is decreasing.

Where does the tropopause end?

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.

What is in the thermosphere?

In the upper thermosphere, atomic oxygen (O), atomic nitrogen (N), and helium (He) are the main components of air. Much of the X-ray and UV radiation from the Sun is absorbed in the thermosphere. When the Sun is very active and emitting more high energy radiation, the thermosphere gets hotter and expands or “puffs up”.

How does the height of the tropopause change from day to night?

The height of the tropopause depends on latitude, season, and whether it is day or night. Near the equator, the tropopause is about 20 km (12 miles or 65,000 feet) above sea level. In winter near the poles the tropopause is much lower. It is about 7 km (4 miles or 23,000 feet) high.

What is the height of the thermosphere?

The thermosphere starts just above the mesosphere and extends to 600 kilometers (372 miles) high. Aurora and satellites occur in this layer.

Which of the following is a characteristic of the tropopause?

The tropopause is characterized by temperatures that stop decreasing and remain steady, before later increasing in the stratosphere. Temperature is a measure of the average kinetic energy in a substance.

What is the average height of the troposphere Brainly?

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 difference between the troposphere and the tropopause?

The troposphere is the lowest and thickest layer of the atmosphere. … The tropopause is the boundary layer between the troposphere and the stratosphere . The thickness of the troposphere depends upon a number of atmospheric variables at latitude .

What is the average height of the troposphere Class 7?

Troposphere: This layer is the most important layer of the atmosphere. Its average height is 13 km. The air we breathe exists here. Almost all the weather phenomena like rainfall, fog and hailstorm occur in this layer.

What is the average height of troposphere and stratosphere together?

The correct answer is the option 4 , i.e 13km

The troposphere layer is the nearest to Earth’s surface. It is 7 to 20 km thick and contains water-vapor, clouds, and dust. The stratosphere is the second layer and ends about 50 km above the earth’s surface.