Atmospheric pressure is the force exerted by the weight of air in the Earth’s atmosphere. It plays a crucial role in weather patterns, human health, and various scientific applications.
Atmospheric pressure decreases with altitude and is measured using barometers. Standard atmospheric pressure at sea level is 1013.25 millibars or 29.92 inches of mercury.
High and low pressure systems drive weather changes. High pressure usually brings clear skies, while low pressure often results in clouds and precipitation.
Changes in pressure can affect bodily functions, particularly during air travel or at high altitudes. Some people experience headaches or joint pain due to pressure variations.
What is a simple atmospheric pressure definition?
It’s the weight of air pressing down on the Earth’s surface.
How is atmospheric pressure measured?
Barometers are used, with common units being millibars, Pascals, or inches of mercury.
Why does pressure change with weather?
Temperature variations cause air to expand or contract, creating pressure differences that move air masses.
Meteorologists use pressure readings for weather forecasting. Aviation relies on pressure data for altitude measurements. Many industrial processes require precise pressure monitoring.
For a more detailed atmospheric pressure definition and technical specifications, visit our comprehensive guide.
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