EESA09H3 Lecture Notes - Air Mass (Solar Energy), Jet Stream, Advection
1 Jul 2013
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Document Summary
Differences in air pressure, vertical or horizontal. Differences in pressure forms a pressure gradient force: two isobars creates the pressure gradient force lines of constant pressure wind moves from high to low pressure which. Air tends to flow from high pressure to low pressure. Differences in the two figures: the first figure isobars were nicely spread out, second figure they are randomly spread apart, not equally spread apart. Closely spaced isobar = strong pressure gradient force strong. Coriolis force: fictitious force due to rotation of the earth wind! Arises due to the rotation of earth: very hard to graph because this force is applicable to any moving object on earth. In northern hemisphere, causes a deflection to the right of the motion. In southern hemisphere, deflection to the left of the motion: e. g. , rocket launch eventually curves to the right or left depending on the hemisphere. Related to the distance from the equator at the equator, coriolis force = 0.
