Chapter09a - Wind: Small-Scale and Local Systems RECAP...

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Wind: Small-Scale and Local Systems
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RECAP Coriolis Force: Results from the rotation of the planet. Maximum at the poles and no effect at the equator. Acts perpendicular to the direction of motion: changes the direction  of the wind but not the wind magnitude. The force is proportional to the wind velocity: larger force on stronger  winds and vice versa In the NH deflects the wind to the right. In the SH deflects the wind to the left.
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RECAP Geostrophic winds the pressure force balanced by the Coriolis force. the wind is parallel to the isobars. westerly winds in both NH and SH Gradient winds pressure force not balanced by the Coriolis force. Cyclones ( L ), around centers of  low pressure Counterclockwise in NH, clockwise in SH Anticyclones ( H ), around centers of  high pressure Clockwise in NH, counterclockwise in SH Surface winds (today): Balance between the pressure gradient force, the Coriolis force and the air  friction.  The wind crosses the isobars. Vertical air motion (today): convergences and divergences.
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Surface Winds- a balance of three forces In the boundary layer (~1km thick)  friction is important Friction is acting  opposite  the direction of the velocity -> friction 
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This note was uploaded on 01/26/2012 for the course MET 1010 taught by Professor Matchev during the Spring '08 term at University of Florida.

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Chapter09a - Wind: Small-Scale and Local Systems RECAP...

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