atmospheric pressure

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atmospheric pressure

Pressure caused by the weight of the atmosphere. It has a mean value of one atmosphere at sea level but reduces with increasing altitude. Also called barometric pressure.

atmospheric pressure

(General Physics) the pressure exerted by the atmosphere at the earth's surface. It has an average value of 1 atmosphere

at′mospher′ic pres′sure

1. the pressure exerted by the earth's atmosphere at any given point.
2. a value of standard or normal atmospheric pressure, equivalent to the pressure exerted by a column of mercury 29.92 in. (760 mm) high, or 1013 millibars (101.3 kilopascals). Also called barometric pressure.

at·mos·pher·ic pressure

Pressure caused by the weight of the air. At sea level it has an average value of one atmosphere and gradually decreases as the altitude increases.
Did You Know? The atmosphere that blankets the Earth gently presses down on us, and the subtle variations in this atmospheric pressure greatly affect the weather. For example, forecasters often talk of low pressure bringing rain. In areas of low air pressure, the air is less dense and relatively warm, which causes it to rise. The expanding and rising air naturally cools and the water vapor in the air condenses, forming clouds and the drops that fall as rain. In high pressure regions, on the other hand, the air is dense and relatively cool, which causes it to sink. The water vapor in the sinking air does not condense, leaving the skies sunny and clear. So if you're trying to hit a home run, would you prefer a beautiful, sunny day or one in which it looks like rain? On the overcast day, the ball has less air to push aside on its way out of the ballpark, making it easier to hit a homer.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.atmospheric pressure - the pressure exerted by the atmosphereatmospheric pressure - the pressure exerted by the atmosphere
gas pressure - the pressure exerted by a gas
barometric pressure - atmospheric pressure as indicated by a barometer
compartment pressure - the air pressure maintained in an air-tight compartment (as in an aircraft)
overpressure - a transient air pressure greater than the surrounding atmospheric pressure; "the overpressure of the blast kills by lethal concussion"
sea-level pressure - the atmospheric pressure reduced by a formula to the pressure at sea level
References in periodicals archive ?
Yet a ship's barometer recorded a central pressure of 914 hPa--not enough to cause half that surge.
Tuesday, with its central pressure lowering to 975 mb, which leads to stronger winds.
Parameterized models typically employ a limited set of variables to characterize storms systems, such as lowest central pressure and a well-defined storm track.
Contract notice: Central pressure systems house print shop.
The RMS model employs the company's latest `basin-wide' hurricane track set, which captures the full lifetime track and central pressure of each simulated hurricane.
Similarly, event payments associated with Atlantic hurricane in the Miami or New York areas will depend parametrically on the pronouncement by the National Hurricane Center Tropical Prediction Center, a branch of the National Oceanic and Atmospheric Association, as to the point of landfall and central pressure at landfall.
In this context, the service licensee must establish (hereinafter Contractor) has a central pressure center in the premises of the University of Koblenz-Landau (University StraE-e 1, 56070 Koblenz) and operate.
In addition to Bonnie being a weaker storm at landfall (with a central pressure of 963 mb vs.
The City of Hannover writes (except paper and staples) for the period of 60 months, the hiring of 3 central pressure systems incl.
i) Apparatus for measuring pulse wave velocity and central pressure at 1 pc.
Structure: Central pressure reduction, mass flow measurement, filtration, nitrogen distribution with reserve and exit pressure monitoring.

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