rõhumuutus

Rõhumuutus, also known as barometric pressure change, refers to the variation in atmospheric pressure over a given period. It is a crucial meteorological parameter that influences weather patterns and can be used to predict short-term weather changes. Atmospheric pressure is measured in units such as millibars (mb) or inches of mercury (inHg).

Rõhumuutus can be observed over different time scales, including hourly, daily, and seasonal variations. Rapid changes in pressure, known as pressure gradients, can indicate the approach of a weather system, such as a storm or a high-pressure area. A falling barometer, or decreasing pressure, often signals the arrival of unsettled weather, including clouds, precipitation, and wind. Conversely, a rising barometer, or increasing pressure, typically indicates improving weather conditions, with clearer skies and calmer winds.

The rate of pressure change can also provide insights into the intensity and movement of weather systems. For example, a rapid drop in pressure can indicate the approach of a strong storm, while a gradual rise in pressure may suggest the passage of a high-pressure system.

Rõhumuutus is monitored by meteorological stations and weather services worldwide, and data is used in weather forecasting, aviation, and other applications. Understanding and interpreting barometric pressure changes are essential skills for meteorologists and weather enthusiasts alike.