High pressure systems are?

High pressure systems are areas in the atmosphere with relatively higher atmospheric pressure compared to their surroundings. In these systems, air descends from higher altitudes, leading to the compression and warming of the air mass. As the air sinks, it creates a downward force, thus preventing the ascent of air and the formation of clouds and precipitation. Consequently, high pressure systems are typically associated with clear skies, calm weather conditions, and stable atmospheric conditions.