# Altitude temperature relationship

### Altitude - Wikipedia

Thus the air temperature is highest near the surface and decreases as altitude increases. The speed of sound depends on the temperature and also decreases . Temperature changes with altitude. The atmosphere is divided into different layers depending on how temperature changes. Take a look at the graph below to. Tutorial of How to Calculate Altitude & Temperature. By Lawrence Nyveen; Updated April 25, The atmosphere isn't completely translucent. It scatters a bit.

As the pressure gets lower, the temperature decreases. The rate of decrease of temperature with elevation is known as the adiabatic lapse ratewhich is approximately 9. Water vapor contains latent heat of vaporization.

As air rises and cools, it eventually becomes saturated and cannot hold its quantity of water vapor. The water vapor condenses forming cloudsand releases heat, which changes the lapse rate from the dry adiabatic lapse rate to the moist adiabatic lapse rate 5. For explosive events sprints up to metres, long jumptriple jump the reduction in atmospheric pressure signifies less atmospheric resistance, which generally results in improved athletic performance.

Sports organizations acknowledge the effects of altitude on performance: The air density at 20 km is only a third of that at 12 km. The high speed of supersonic aircraft is made possible by the reduced air resistance at 20 km.

• Atmospheric temperature

Consider a coastline with initially the same atmospheric temperatures and pressures over land L and over sea S. Assume that there is initially no wind. In summer during the day the land surface is heated to a higher temperature than the sea. This difference is due in part to the larger heat capacity of the sea, and in part to the consumption of heat by evaporation of water.

Why are mountains cold?

Compensating vertical motions result in the circulation cell shown in Figure In fact, the tropopause is in part defined by this thermal stability. The temperatures measure roughly degrees C at 75 degrees latitude, degrees C at 60 degrees latitude and degrees C at 45 degrees latitude.

Closer to the equator, the tropopause continues to cool. At 30 degrees latitude, the temperature falls to degrees C at 15 km altitude before starting to rise.

### CHAPTER 2. ATMOSPHERIC PRESSURE

At the equator, the temperature hits degrees C around 17 km high before rising. The average temperature of the entire tropopause is a steady degrees C. The tropopause is coldest over the equator and warmest over the poles because as warm air rises and expands, it sucks up heat energy and cools the atmosphere. The more the air expands, the more it cools the surroundings -- and warm air expands more than cold air.

Calculate the temperature at the altitude of your choice in the stratosphere.