Weather characteristics under the control of subtropical high

Subtropical high refers to a high-pressure system formed in the atmospheric circulation, which is usually located in the subtropical region near the equator. The weather characteristics under the control of subtropical high mainly include the following aspects:

Stable and sunny weather: the subtropical high is usually accompanied by a steady downward airflow, which inhibits convective activities and cloud development. Therefore, under the control of subtropical high, sunny, partly cloudy or cloudless weather usually occurs.

Drying conditions: The downward airflow in subtropical high pressure area makes the air sink and heat, and the evaporation rate of water increases. In this case, the relative humidity is low and the weather is dry.

High temperature weather: the descending airflow in the subtropical high pressure area produces high pressure, which compresses air molecules and causes the temperature to rise. Therefore, under the control of subtropical high, there is usually a higher temperature.

Good visibility: Because the weather under the control of subtropical high is often sunny and dry with low humidity, the visibility is usually good and the field of vision is wide.

It should be noted that the subtropical high does not always have the same shape and position, and its position and intensity will change with the seasons and geographical locations. Therefore, the weather characteristics under the control of subtropical high may be different at different times and places. At the same time, subtropical high may also lead to some extreme weather phenomena, such as drought and high temperature, which have an important impact on agriculture, ecological environment and human life.