High pressure refers to the place where the pressure is higher than the surrounding pressure. The place with the highest pressure is called "high pressure center". Near the center of the high pressure in the northern hemisphere, the wind blows outward with a right-handed vortex, so the air in this part is relatively thin. To supplement it, the air falls from above, forming downdrafts, so it is usually good weather.
- Chinese name
- High barometric pressure
- Foreign name
- high atmospheric pressure，HighPressure
- Abbreviation
- high pressure
- Properties
- meteorology
- Application
- weather
- Classification
- Power high pressure, thermal high pressure
Referred to as "high voltage", it refers to pressure The place with the highest pressure is called“ In high pressure heart ”。 At the same altitude, the atmospheric vortex whose central pressure is higher than the surrounding pressure is called "high pressure"“ high pressure ”。 Usually, we study the high pressure near the ground. High pressure air flows outward from the center（ Divergence ）, due to earth The influence of rotation flows clockwise in the northern hemisphere and counterclockwise in the southern hemisphere. High pressure is also called Anticyclone , but the former is based on Barometric field Name, the latter according to airflow Field naming (opposite to vortex direction). stay high pressure There is no front in the area because of the airflow Divergence The air at high altitude subsides to supplement, during which the temperature rises and the relative humidity decreases, forming the weather of little cloud, rain and strong wind. According to the cause of formation, it can be divided into dynamic high pressure and thermal high pressure. For example, subtropical high and continental cold high.
According to different thermal structures, it can be divided into cold high-pressure and warm high-pressure. For example: continental cold high pressure, tropical ocean air mass.
High pressure can be divided into two types according to its thermal structure:
The most common is Cold high pressure It is caused by surface heat dissipation and cooling. After the surface cools, the air temperature near the surface also decreases, and cold air Lack of heat energy, so it is difficult to rise. It is a heavier and denser air, while the surrounding air is warmer and lighter, so the air flow becomes blowing from the cold air to the surrounding direction, forming a cold High voltage center 。 Such as the high pressure in Antarctica and Siberia. and Subtropical high Because the bit is in equator The strong updraft of high pressure , flowing in the direction of lower pressure in the south and north; because coriolis force As a result, the air flow from the equator gradually turns from west to east, no longer moving along the longitude, and accumulates and sinks around 30 degrees north and south latitude, forming a high pressure, which is relatively hot. At present, the testing institutions that can carry out high pressure are: Yitong Testing Laboratory Environmental Reliability and Electromagnetic Compatibility Test Center etc. 
