ATOC 184 Lecture Notes - Lecture 4: Pressure-Gradient Force, Geostrophic Wind, Coriolis Force
11 Apr 2018
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Geostrophic balance: primary balance between fundamental force (pressure gradient force) and an apparent force (coriolis force) Initially when the parcel is at rest, there is no coriolis force (moving with the earth) The faster the movement of the parcel, the greater the deflection. Large deflection in airplane or missile vs baseball. Coriolis force is always to the right of the original direction of the wind in the northern hem. Therefore, the wind continues to deflect to the right as it accelerates. The pgf changes the speed, while the coriolis changes the direction: eventually, the wind achieves a balance where the coriolis force is balancing the. Direction of coriolis deflection is exactly opposite from pgf. Hem as coriolis deflect deflects everything to the left in the southern hem. If you constantly stacking binders on top of each other on the thick side, you increase slope dramatically.
