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Pressure gradient force - Definition and Overview |
| Related Words: Advocate, Affliction, Aggravation, Albatross, Annoyance, Ascendancy, Authority, Bale, Bearing, Beset, Blight, Boost, Bug, Bummer, Bump, Bunt |
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The pressure gradient force is the force that is usually responsible for accelerating a parcel of air from a high atmospheric pressure region to a low pressure region, resulting in wind.
The pressure gradient force acts at right angles to isobars in the direction from high to low pressure. The greater the pressure difference over a horizontal distance, the greater the force and hence the stronger the wind.
However the pressure gradient force is not the only force that acts on a moving parcel of air — if it were, then eventually the low and high pressure regions would disappear. The second force acting on a moving parcel of air is the Coriolis force.
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Example Usage of Pressure |
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obs_melb: AT 5:54am: 13.0°C, Humidity 95%, Wind NNE 4km/h, Pressure 999.1hPa. SO FAR: Min 12.9°C, Max 15.2°C, Rain 10.0mm. F'CAST: @weather_melb |
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St_Cloud_WX: Fair and 41 F at St. Cloud Regional Airport, MN Winds are Northwest at 5.8 MPH (5 KT). The Pressure is 1011.3 mb and th http://s1z.us/ij.htm |
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dizzleswagmore: @dizzleswagmore no Pressure!!!!!! |
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