How Much Is Atmospheric Pressure At Sea Level

This is due to an increase in hydrostatic pressure the force per unit area exerted by a liquid on an object.

How much is atmospheric pressure at sea level. For every 33 feet 10 06 meters you go down the pressure increases by one atmosphere. The pressure increases about one atmosphere for every 10 meters of water depth. If you are at sea level each square inch of your surface is subjected to a force of 14 6 pounds. Although air contains 20 9 oxygen at all altitudes lower air pressure at high altitude makes it feel like there is a lower percentage of oxygen.

Altitude above sea level absolute atmospheric pressure. That s a lot of pressure. Psia kg sq. Altitude above sea level temperature barometric pressure atmospheric pressure feet miles meters f c in.

An atmosphere atm is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees celsius 59 degrees fahrenheit. At a depth of 5 000 meters the pressure will be approximately 500 atmospheres or 500 times greater than the pressure at sea level. Altitude above sea level absolute barometer absolute atmospheric pressure. Millimetres or inches of mercury pounds per square inch psi dynes per square centimetre millibars mb standard atmospheres or kilopascals standard sea level pressure by definition equals 760 mm 29 92 inches of mercury 14 70 pounds per square inch 1 013 25 10 3 dynes per square centimetre 1 013 25.

The charts are based on the ideal gas law equation for pressure versus altitude assuming a constant atmospheric temperature of 32 degrees fahrenheit 0 celsius and 1 atmosphere pressure at sea level. Without correcting for air pressure at sea level the air pressure on the top of mt. Everest is near 300 mb. Atmospheric pressure is expressed in several different systems of units.

Deepest point under sea level of sognefjorden norway. 1 013 25 mbar which is equivalent to 760 mm hg 29 9212 inches hg or 14 696 psi. One atmosphere is 1 013 millibar s or 760 millimeters 29 92 inches of mercury. The deeper you go under the sea the greater the pressure of the water pushing down on you.

For example if air pressure measures 840 mb at an elevation of 1 000 meters above sea level the measurement adjusted for sea level is 1 020 mb. The atm unit is roughly equivalent to the mean sea level atmospheric pressure on earth. Atmospheric pressure also known as barometric pressure after the barometer is the pressure within the atmosphere of earth the standard atmosphere symbol. Feet metre inches hg mm hg psia kg cm 2 kpa 5000 1524.