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## Pressure gradient forceThe ## Additional recommended knowledgeThe term 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 given horizontal distance, the greater the force and hence the stronger the wind. The pressure gradient force, however, is not the only force that acts on a moving parcel of air — if it were, then low and high pressure regions would eventually disappear. Other forces acting on a horizontally moving parcel of air include; surface friction, coriolis force, centrifugal force. In large-scale atmospheric flows, the coriolis force generally balances the pressure gradient force, producing winds blowing largely along the isobars; however, near the surface the friction term is also important, generally giving a resulting net wind direction diagonal to the isobars (with a component blowing towards the low pressure center). |

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pressure_gradient_force". A list of authors is available in Wikipedia. |