Concept in Definition ABC

At the behest of the meteorology, An Isobar or Isobar is a pressure isogram, which consists of a line of equal or constant pressure, in a graphic, a layout or map.

Except for a few exceptions, isobars are lines that join all the points on a map that have the same atmospheric pressure, which is measured in bars. All the isobars of a meteorological map will allow us to know the force of the wind and the direction it has in a certain area.

Meanwhile, related to isobars, we find ourselves at alobaras (line that delimits an area in which there was a change in atmospheric pressure), the analobars (in case the aforementioned change is positive) and the you will catalog (when, on the contrary, the change is negative).

The atmospheric pressure is the pressure exerted by the air atmospheric at any point in the atmosphere. At a specific point, the atmospheric pressure will represent the weight of a straight column of air that will extend from the mentioned point to the upper limit of the atmosphere.

As a consequence that the density of the air increases when the height increases, it is impossible to calculate the mentioned weight, but yes, it is very easy to measure it unlike how difficult it is to make a calculation of the same.

The meteorological changes cause variations in the atmospheric pressure of a certain place, as well as the atmospheric pressure decreases according to the altitude, it will decrease in the levels next to the sea.

Regarding the variations that atmospheric pressure may experience, we find that when the air is cold, it descends, achieving the stability and achieving the phenomenon known as thermal anticyclone. On the contrary, when the air is hot the pressure will rise, causing the pressure to drop and will lead to a weather instability, which will eventually lead to a cyclone or thermal storm.

While cold air and hot air refuse to mix, when the unexpected situation they meet happens, the cold air will push upwards to the hot one, giving rise to instability and dynamic storm, while this contact zone is called the front.