Pressure on Earth A version of this article first appeared on NOVA's Web site Everest. Put Mt. Everest (28 deg North) at the latitude of Mt. McKinley (63 deg North) in the United States and it is ...

Atmospheric pressure forces the mercury to rise up the tube. At sea level, the column of mercury will rise (on average) to a height of 29.92 inches or 760 millimeters.

Understanding atmospheric pressure is vital, newsroom meteorologist Justin Ballard said, because those giant H’s and L’s representing high and low air pressure systems on a weather map are ...

Pressure variations cause tidal oscillations in other atmospheric characteristics as well. It is common for atmospheric waves to grow in amplitude with height as the air becomes thinner.

Artist's illustration of Mars' thin atmosphere. (Image credit: NASA) ... On Earth, the average atmospheric pressure is about 1,000 millibars at sea level. Get the Space.com Newsletter.