Here's why:
* Descending Air: High-pressure zones are characterized by descending air. As air descends, it warms and becomes drier. This is because the air is compressed as it moves towards the surface, and compression raises the temperature.
* Lack of Precipitation: The descending air inhibits the formation of clouds and precipitation. This is because warm air can hold more moisture, and as the air descends and warms, it can hold even more moisture without condensing into clouds.
* Dry Climates: These dry conditions contribute to the development of deserts and arid regions in the lower latitudes.
The major subtropical highs are located around 30° North and 30° South latitude, which is why you often find deserts in these regions.
