Rõhujoonad

Rõhujoonad, also known as isobars, are lines on a weather map that connect points of equal atmospheric pressure. They are a fundamental tool in meteorology for visualizing and understanding weather patterns. The closer the rõhujooned are to each other, the steeper the pressure gradient, which typically indicates stronger winds. Conversely, widely spaced rõhujooned suggest a weaker pressure gradient and lighter winds.

Rõhujooned are usually drawn at regular intervals, such as every 4 millibars or 2 hectopascals. High-pressure systems are typically represented by areas where rõhujooned form a closed or nearly closed loop with increasing pressure towards the center, often associated with fair and stable weather. Low-pressure systems, conversely, are characterized by decreasing pressure towards the center and are often linked to cloudy, stormy, and unsettled weather conditions.

The movement and evolution of rõhujooned on successive weather maps allow meteorologists to track the development and displacement of weather systems, predict wind speed and direction, and forecast future weather changes. Understanding the spacing and shape of rõhujooned is crucial for interpreting weather maps and making informed weather predictions.