Meaning of Altitude
What is Altitude:
Altitude is called the vertical distance that exists between any point on Earth in relation to sea level. To calculate the altitude, the sea level is taken as a reference, and that is why the altitude is expressed in meters followed by the symbol "msnm" which means "meters above sea level".
In the same way, altitude is seen as a synonym for height in relation to its surface, for example: "the cross is at an altitude of 2,000 meters, so we still need to get there."
The altitude is related to the thermal floors, that is, the correlation that exists between the altitude and the modifying factor of the climate, especially in the intertropical zone. By virtue of the fact that at higher altitudes, the environmental temperature decreases, approximately 1 ° C for every 180m of altitude.
In reference to the above, a high altitude is a detrimental factor for athletes, such as: football, climbing, since at higher altitude, less oxygen is available, which makes it difficult for athletes to breathe and perform.
The measuring instrument used for altitude is known by the name of altimeter, it is also used in aeronautics, as in sports that suffer from large slopes, such as: mountaineering, cycling, climbing, skydiving, skiing.
Orthometric and ellipsoidal altitude
The altitude can be: orthometric and ellipsoidal. Orthometric altitude is characterized by being the distance from a point located on the earth's surface, in relation to a reference geoid, for its part, ellipsoidal altitude is the vertical distance from a point to a reference ellipsoid.
The altitudes indicated by the receivers of the Global Positioning Systems (GPS) are ellipsoidal, the GPS provides an error of just a few meters.