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Surface pressure

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Surface pressure is the atmospheric pressure at a point of Earth's surface. It is directly proportional to the mass of air over that point.

 


Rising Motion and Surface Pressure Falls in response to warm and cold advections ...

surface pressure - In meteorology, the atmospheric pressure at a given location on the earth's surface. This expression is applied loosely and about equally to the more specific terms: station pressure and sea level pressure.

Surface Pressure The pressure that is read from a barometer but is not adjusted to sea level.

STANDARD SURFACE PRESSURE
The measurement of one atmosphere of pressure under standard conditions. It is equivalent to 1,013.25 millibars, 29.92 inches of mercury, 760 millimeters of mercury, 14.7 pounds per square inch, or 1.

where pno is the surface pressure and the nth constituent gas, mn its mean molecular mass, g the acceleration of gravity, h the geometric height, k Boltzmann's constant (1.3804 × 10−23 J K−1), and T the absolute temperature.

Used as a common reference for analyses of surface pressure patterns. Sea rainbow Same as marine rainbow. Sea water thermometer A thermometer designed for use in measuring the temperature of sea water.

general circulation models Hydrodynamic models of the atmosphere on a grid or spectral resolution that determine the surface pressure and the vertical distributions of velocity, temperature, density, ...

The acronym stands for Australian Surface Pressure Bogus Data for the Southern Hemisphere).

Southern Oscillation (SO): A "see-saw" in surface pressure in the tropical Pacific characterized by simultaneously opposite sea level pressure anomalies at Tahiti, in the eastern tropical Pacific and Darwin, on the northwest coast of Australia.

(SO) - a "see-saw" in surface pressure in the tropical Pacific characterized by simultaneously opposite sea level pressure anomalies at Tahiti, in the eastern tropical Pacific and Darwin, on the northwest coast of Australia.

BNBlowing SandBNDRYBoundaryBombPopular expression of a rapid intensification of a cyclone (low pressure) with surface pressure expected to fall by at least 24 millibars in 24 hour.

DOUBLE-BARRELLED LOW PRESSURE SYSTEM- Ideally a low pressure system will have one distinct center where the surface pressure and height aloft are lowest at one point.

The surface pressure drives surface winds and wintertime storms from west to east across the North Atlantic affecting climate from New England to western Europe as far eastward as central Siberia and eastern Mediterranean and southward to West ...

ISALLOBAR- A line of equal surface pressure change.
ISENTROPIC LIFT/DECENT- Lifting or sinking of air along constant potential temperature (theta) surfaces.

Anticyclone A dome of air that exerts relatively high surface pressure compared with surrounding air; same as a high. Viewed from above in the Northern Hemisphere, surface winds in an anticyclone blow clockwise and outward.

MILLIBAR: A unit of atmospheric pressure. 1 mb = 100 Pa (pascal). Normal surface pressure is approximately 1013 millibars.
MONSOON: A persistent seasonal wind, often responsible for seasonal precipitation regime.

A surface temperature of 59° F (15° C) and a surface pressure of 29.92 inches of mercury (1013.2 millibars) at sea level;
A lapse rate in the troposphere of 6.5° C per kilometer (approximately 2° C per 1,000 feet); ...

Millibar. The metric measurement of air pressure. A millibar is 1000 dynes per square centimeter, or 100 pascal (Pa). Surface pressure averages around 1013 millibars.
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In meteorology, pressure refers to the weight of air in a column directly above a point.
The standard atmospheric pressure at mean sea level is 1013.25 hPa, though surface pressures of 870 hPa (Typhoon Tip, October 1979) and 1084 hPa (Agata, ...

Divergence - Going apart. Upper-level divergence is associated with rising air. Surface divergence is associated with subsidence and high surface pressure.

MILLIBAR (MB) The standard unit of measurement for atmospheric pressure used by the National Weather Service. One millibar is equivalent to 100 newtons per square meter. Standard surface pressure is 1,013.2 millibars.

thermal fluxes at the surface or latent heat transformations associated with cloud formation and precipitation. These processes change the temperature distribution in the air column, resulting in density changes which modify the surface pressures.

trough in the upper flow, the surface weather will tend to be of a low pressure/convective/showery type, and perhaps cool for the time of year (but not necessarily); In, and just to the east of a static ridge in the flow, the surface pressure will ...

Standard surface pressure is 1,013.2 millibars. MINIMUM The least value attained by a function, for example, temperature, pressure, or wind speed. The opposite of maximum. MIST A collection of microscopic water droplets suspended in the atmosphere.

See also: Surface, Pressure, Air, High, Atmosphere

Meteorology Surface layerSurface stress

 
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