At the behest of the meteorology, an isobar or isobar is a pressure isogram, which consists of a line of equal or constant pressure, on a graph, plot or map.
With some exceptions, isobars are lines that join on a map all the points 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 that it has in a certain area.
Meanwhile, related to the isobars, we find ourselves at you will praise (line that delimits an area in which there was a change in atmospheric pressure), the analobaras (if the aforementioned change is positive) and the catalobaras (when, on the contrary, the change is negative).
The atmospheric pressure It is the pressure exerted by atmospheric air 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 that 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 aforementioned weight, but yes, it is very easy to measure it, unlike how difficult it is to calculate it.
Meteorological changes cause variations in the atmospheric pressure of a certain place, just as the atmospheric pressure decreases according to the altitude, it will decrease in the levels close to the sea.
Regarding the variations that the atmospheric pressure may experience, we find that when the air is cold, it descends, achieving stability and achieving the phenomenon known as thermal anticyclone. Conversely, when the air is hot, the pressure will rise, causing the pressure to drop and giving rise to an unstable climate, which will eventually lead to a cyclone or thermal storm.
Although the cold air and the warm air refuse to mix, when the unexpected situation occurs, the cold air will push the warm one up, giving rise to instability and dynamic storm, as long as this contact zone is called as front.
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