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Air pressure above sea level can be calculated as. p = 101325 (1 - 2.25577 10-5 h) 5.25588 (1) where . 101325 = normal temperature and pressure at sea level (Pa) p = air pressure (Pa) h = altitude above sea level (m) Example - Air pressure at Elevation 10000 m. The air pressure at altitude 10000 m can be calculated as
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This is in contrast to mean sea-level pressure, which involves the extrapolation of pressure to sea level for locations above or below sea level. The average pressure at mean sea level in the International Standard Atmosphere is 1,013.25 hPa, or 1 atmosphere (atm), or 29.92 inches of mercury.
Online calculator, figures and tables showing density, specific weight and thermal expansion coefficients of air at temperatures ranging -100 to 1600 °C (-140 to 2900 °F) at atmospheric and higher pressure - Imperial and SI Units. Air - Specific Heat vs. Pressure at Constant Temperature.
Atmospheric pressure at sea level is p 0 = 101 325 Pa. Under those conditions the density of air is ρ 0 = 1.225 kg/m 3. The atmospheric pressure can be measured with a mercury barometer. It is a glass tube closed at the top and placed in an open container filled with mercury.
Standard sea-level pressure, by definition, equals each of the following: 760 mm (29.92 inches) of mercury. 14.70 pounds per square inch. 1,013.25 × 10 3 dynes per square centimeter. 1,013.25 millibars. one standard atmosphere. 101.325 kilopascals. These values show only very small variations.
18 gru 2023 · The standard pressure at sea-level is 1013.25 in both millibars (mb) and hectopascal (hPa). The number of molecules in the atmosphere decreases with height. Download Image
Converts barometric pressure into mean-sea-level-pressure to enable direct comparison of weather station data from around the world since weather forecasts list only the equivalent mean sea-level pressure. Measured air temperature: °C. Latitude of the stations: °. Elevation of measured data: meter.
