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What is the difference between atmospheric pressure and ambient pressure?

Published in Atmospheric Pressure Basics 2 mins read

Ambient pressure and atmospheric pressure are essentially the same thing: the pressure exerted by the weight of air above a given point. The reference provided states that ambient pressure is the atmospheric pressure of a given location.

Here's a more detailed breakdown:

  • Atmospheric Pressure: This is a general term referring to the pressure exerted by the Earth's atmosphere. It varies depending on altitude and weather conditions.
  • Ambient Pressure: This term refers to the atmospheric pressure specific to a particular location at a particular time.

Therefore, the "difference" is more a matter of specificity. Atmospheric pressure is a broader concept, while ambient pressure refers to the actual atmospheric pressure in a specific environment.

Feature Atmospheric Pressure Ambient Pressure
Definition Pressure exerted by the Earth's atmosphere. Atmospheric pressure in a specific location.
Specificity General. Specific.
Variation Varies with altitude and weather. Varies with altitude and weather at a location.
Example Describing pressure changes with global weather. Measuring pressure in a room.

As the reference indicates, atmospheric pressure, and therefore ambient pressure, is affected by altitude. For example, there is less oxygen available for breathing at higher altitudes such as the top of a mountain, due to the decrease in atmospheric (and ambient) pressure.

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