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Why does wind at the Earth's surface more closely approximate the direction of the pressure gradient force than the wind aloft does?

Why does wind at the Earth's surface more closely approximate the direction of the pressure gradient force than the wind aloft does? Choose the best answer below:


  1. Winds near the Earth's surface are deflected by mountains, trees, etc, and the deflection moves the wind right in line with the pressure gradient force as a result.
  2. Winds slowed down by friction weaken the Coriolis force. This means that deflection is not as great so wind will follow the pressure gradient more closely as a result.
  3. Winds that are not retarded by friction will weaken the Coriolis force, which allows the wind to more closely approximate the pressure gradient force.
  4. Since all wind is generated by the Pressure Gradient Force, all wind will follow the direction of this force as well.

Top Answer

2.Winds slowed down by friction weaken the Coriolis force.... View the full answer

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