What does high pressure mean?

High pressure refers to an environment where the atmospheric pressure is higher than average. Air pressure is an expression of atmospheric force. High air pressure usually means a stable atmosphere, sunny days, calm or light winds, low humidity, and clean air. In high-pressure weather, you can often see clear blue skies, white clouds and clear vision. There is less rain and dreamy sunrises and sunsets are beautiful, suitable for outdoor activities.

The existence of high-pressure belts often causes the air in the atmosphere to form a "pressure gradient" horizontally, thereby forming winds. Therefore, when the air pressure is high, the airflow on the ground is relatively calm, but the higher it is from the ground, the wind speed will gradually increase. Low air pressure is just the opposite. The wind speed on the ground is very fast, that is, the wind is fierce, but at higher altitudes, the wind speed gradually decreases.

Although air pressure is a sign of good weather in most cases, it can also have an impact on human health when the air pressure is too high for many consecutive days. When the air pressure continues between 1030 hPa and 1035 hPa, it can easily lead to poor blood vessel dilation, headache, hypotension, nausea and other adverse symptoms; when the air pressure exceeds 1040 hPa, it may also lead to Andorra syndrome and other more severe symptoms. Serious health problems.