What is the defining feature of high-pressure areas?

High-pressure areas are characterized by greater atmospheric pressure than their surrounding regions. This increased pressure occurs because air descends in these areas, leading to more concentrated air molecules. As the air descends, it warms and can hold more moisture, often resulting in clear skies and stable weather conditions.

This stability is in contrast to low-pressure areas, where rising air can lead to cloud formation and stormy weather. The definition of high-pressure regions is crucial for understanding weather patterns; they typically bring fair weather, while low-pressure areas often bring precipitation and turbulent conditions.

Understanding these dynamics helps in meteorology and aviation, as pilots must be aware of weather systems to ensure safe and efficient flight operations.