In the sections, pressure areas and coriolis force, we found out that wind wants to go from high pressure areas to low pressure areas and that the coriolis force tries to deflect that path to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
Geostrophic winds are quite rare, because most of the time there are other forces that influence wind, making isobars round. However, at high altitudes wind is almost geostrophic.
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