Ilmapaine

Ilmapaine refers to the pressure exerted by the Earth's atmosphere at a given point. It is caused by the weight of the air column above that point. Atmospheric pressure is measured in units such as pascals (Pa), hectopascals (hPa), or millibars (mb). Standard atmospheric pressure at sea level is approximately 1013.25 hPa or 1013.25 millibars.

Air pressure varies with altitude; it decreases as elevation increases because there is less air above. It also fluctuates due to changes in weather. High-pressure systems are generally associated with clear, stable weather, while low-pressure systems often bring clouds, precipitation, and wind. These pressure differences drive atmospheric circulation, creating winds as air moves from areas of high pressure to areas of low pressure. Meteorologists use barometers to measure ilmapaine and forecast weather patterns. Understanding ilmapaine is crucial for aviation, navigation, and various scientific applications.