Antisykloneja

Antisykloneja, commonly referred to as anticyclones, are large-scale high-pressure systems in the Earth's atmosphere. They are characterized by subsiding air that suppresses cloud formation, leading to generally clear skies and stable weather over large areas. In the Northern Hemisphere, the winds around an anticyclone circulate clockwise, while in the Southern Hemisphere the circulation is counterclockwise. The central air pressure is higher than in surrounding areas.

Anticyclones form through the subsidence of air in the upper troposphere, adiabatic warming, and the establishment or decay of ridge patterns in the jet stream. They are often associated with subtropical highs, such as the Azores High or the Pacific High, and may persist for several days or longer, sometimes blocking the path of westerly storms. Prolonged anticyclones can contribute to heatwaves in summer and frost or cold snaps in winter, depending on latitude and season. They generally reduce precipitation and humidity, but can trap pollutants and form fog or haze near the surface.

Antisykloneja interact with surrounding weather by guiding moisture away from the interior of continents and altering storm tracks. They play a central role in climate and weather variability, influencing regional droughts and temperature extremes. In meteorology, anticyclones are a fundamental feature of the atmospheric circulation, described by surface pressure fields, wind patterns, and vertical motion. Further study covers their formation, lifetime, and impact on regional weather patterns.