Is the air pressure high or low in the plateau?

Generally speaking, the air pressure in plateau area is lower than that in plain area. Atmospheric pressure decreases with the elevation, that is, the higher the elevation, the lower the atmospheric pressure.

In the natural environment, atmospheric pressure and oxygen partial pressure will be affected by various natural factors. For example, altitude, temperature and humidity, and direct sunlight time will all affect atmospheric pressure. According to the laws of physics, the atmospheric pressure on the earth varies with altitude. With the increase of altitude, the atmospheric pressure will be lower and lower. Specific data show that whenever the altitude rises 100 meters, the temperature will drop together, the atmospheric pressure will drop by 0.67kPa, and the oxygen content in the air will also drop. Within a year, the atmospheric pressure will also change. Comparatively speaking, winter is higher than summer, and morning and evening are higher than noon in a day.

Many people living in plain areas are prone to dizziness, vomiting, limb weakness and other adverse reactions after going to plateau areas, and sometimes even life-threatening. This is also due to the low atmospheric pressure in the plateau area, so the oxygen content in the air is thin.

Many people will find that when water boils, it is very easy to boil, but they can't feel the temperature of real boiling water. This is also because the plateau latitude is high and the air pressure is low, so the boiling point of water will also change from 100 degrees Celsius at standard atmospheric pressure to 80 degrees Celsius. Even if the rice that has been cooked for a long time is not cooked, it is still raw and may not be eaten at all. Therefore, for people living in the plateau, the pressure cooker is an indispensable kitchen utensil in daily life, and the air pressure can be raised to the standard atmospheric pressure by external force.