What is atmospheric pressure, we are told at school in the lessons of natural history and geography. We get acquainted with this information and safely throw it out of our heads, rightly believing that we will never be able to use it.
But over the years, the stress and environmental conditions of the environment will have enough impact on us. And the concept of “geodependence” will no longer seem like nonsense, because pressure surges and headaches will begin to poison life. At this point, you will have to remember what the atmospheric pressure is, in Moscow, for example, in order to adapt to new conditions. And move on.
School basics
The atmosphere that surrounds our planet, unfortunately, literally puts pressure on all living and non-living things. To define this phenomenon, there is a term - atmospheric pressure. This is the force of the impact of the air column on the area. In the SI system, we talk about kilograms per 1 square centimeter. Normal atmospheric pressure (for Moscowoptimal indicators have long been known) affects the human body with the same force as a kettlebell weighing 1.033 kg. But most of us don't notice it. There are enough gases dissolved in body fluids to neutralize all discomfort.
Norms of atmospheric pressure in different regions are different. But 760 mm Hg is considered ideal. Art. Experiments with mercury were most revealing at a time when scientists were proving that air has weight. Mercury barometers are the most common instruments for measuring pressure. It should also be remembered that the ideal conditions for which the named 760 mm Hg are relevant. Art., is a temperature of 0 ° C and the 45th parallel.
In the international system of units, it is customary to define pressure in Pascals. But for us it is more familiar and understandable to use the fluctuations of the mercury column.
Relief features
Of course, many factors influence the value of atmospheric pressure. The most significant are the relief and proximity to the magnetic poles of the planet. The norm of atmospheric pressure in Moscow is fundamentally different from the indicators of the same St. Petersburg; and for the inhabitants of some remote village in the mountains, this figure may seem completely anomalous. Already at the level of 1 km above sea level, the pressure is reduced. It corresponds to 734 mm Hg. st.
As already noted, in the region of the earth's poles, the amplitude of pressure changes is much higher than in the equatorial zone. Even during the dayatmospheric pressure changes slightly. Slightly, however, only 1-2 mm. This is due to the difference between day and night temperatures. It is usually cooler at night, which means the pressure is higher.
Pressure and man
For a person, in fact, it does not matter what atmospheric pressure: normal, low and high. These are very arbitrary definitions. People tend to get used to everything and adapt. Much more important is the dynamics and magnitude of changes in atmospheric pressure. On the territory of the CIS countries, in particular in Russia, there are quite a few zones of low pressure. Often the locals don't even know about it.
Norm of atmospheric pressure in Moscow, for example, may well be considered as a non-constant value. After all, every skyscraper is a kind of mountain, and the higher and faster you go up (go down), the more noticeable the drop will be. Some people may well pass out when riding a high-speed elevator.
Adaptation
Doctors almost unanimously agree that the question "what atmospheric pressure is considered normal" (Moscow or any settlement on the planet - it doesn't matter) is incorrect in itself. Our body adapts perfectly to life above or below sea level. And if the pressure does not have a detrimental effect on a person, it can be considered normal for a given area. Doctors say that the norm of atmospheric pressure in Moscow and other large citiesis in the range from 750 to 765 mm Hg. post.
Completely different thing - pressure drop. If within a few hours it rises (falls) by 5-6 mm, people begin to experience discomfort and pain. This is especially dangerous for the heart. Its beat becomes more frequent, and a change in the frequency of breaths leads to a change in the rhythm of oxygen supply to the body. The most common ailments in this situation are weakness, nausea, headache, etc.
Meteorological dependence
Normal atmospheric pressure for Moscow may seem like a nightmare to a visitor from the North or the Urals. After all, each region has its own norm and, accordingly, its own understanding of the stable state of the body. And since in life we do not concentrate on exact pressure indicators, weather forecasters always focus on whether the pressure is high or low for a given region.
After all, not every person can boast of not noticing the corresponding changes. Anyone who cannot call himself lucky in this matter must systematize his feelings during pressure drops and find acceptable countermeasures. Often a cup of strong coffee or tea is enough, but sometimes more serious help in the form of medicines is needed.
Pressure in the metropolis
The most weather dependent are residents of megacities. It is here that a person experiences more stress, lives life inat a high pace and is experiencing environmental degradation. Therefore, it is vital to know what the atmospheric pressure rate for Moscow is.
The capital of the Russian Federation is located on the Central Russian Upland, which means that there is a priori a zone of low pressure. Why? It's very simple: the higher above sea level, the lower the atmospheric pressure. For example, on the banks of the Moskva River, this figure will be 168 m. And the maximum value in the city was recorded in Teply Stan - 255 m above sea level.
It can be assumed that Muscovites expect abnormally low atmospheric pressure much less frequently than residents of other regions, which, of course, cannot but please them. And yet, what atmospheric pressure is considered the norm in Moscow? Meteorologists say that usually its indicator does not exceed 748 mm Hg. pillar. This means little, as we already know that even a quick lift in an elevator can have a significant impact on a person's heart.
On the other hand, Muscovites do not feel uncomfortable if the pressure fluctuates between 745-755 mmHg. st.
Danger
But from the point of view of doctors, not everything is so optimistic for the residents of the metropolis. Many experts rightly believe that working on the upper floors of business centers, people endanger themselves. Indeed, in addition to the fact that they live in a zone of low pressure, they also spend almost a third of the day in places with rarefied air.
If we add to this fact violations of the ventilation system of the building andthe constant operation of air conditioners, it becomes obvious that the employees of such offices are the most inefficient, sleepy and sick.
Results
Actually, it's worth remembering a few things. First, there is no single ideal value for normal atmospheric pressure. There are regional norms that can differ significantly in absolute terms. Secondly, the characteristics of the human body make it easy to experience pressure drops if this happens rather slowly. Thirdly, the he althier we lead and the more often we manage to observe the daily regimen (getting up at the same time, a long night's sleep, following an elementary diet, etc.), the less we are subject to meteorological dependence. So, more energetic and cheerful.
