What is the height of tropopause?
36,000 feet
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.
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 is tropopause higher in 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.
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.
Why is the height of tropopause over the equator?
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. This implies that the warmer the weather, the thicker is the troposphere.
How do you find 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.
What is the pressure of the tropopause?
The tropopause has an average height of about 10 km (it is higher in equatorial regions and lower in polar regions). This height corresponds to about 7 miles, or at approximately the 200 mb (20.0 kPa) pressure level.
What pressure level is the tropopause at?
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. Hot areas have a shallower atmosphere and cold areas have a thicker atmosphere. The top of the Troposphere can give a good estimate.
How does tropopause vary from equator to pole?
The height of tropopause is lower at the poles than at the equator. The rising air over equator loses more heat(as density decreases with height, air expands, looses energy and cools down) as it ascends about 18km from the surface.
What is the height of the stratosphere?
50 kilometers
The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high.
What is the elevation of the thermosphere?
The thermosphere starts just above the mesosphere and extends to 600 kilometers (372 miles) high.