GEOG 1120 Lecture Notes - Coriolis Force, Pressure Gradient, Pressure-Gradient Force
Document Summary
Aneroid barometer (compresses and decompresses based on the weight of the air, costs about a few grand) Air pressure scales are taken in millibars and half of it is in the normal range. Cold air sinks to the ground because it is heavier than heat. Higher atmospheric pressure: more amount of concentrated air. Lower atmospheric pressure: less amount of concentrated air. Wind creates a balance to give an equal, balanced amount of air concentration. Anemometer gives a measure of velocity of wind. In wind measurement, you must always determine direction and velocity. Wind measurement in an anemometer is always about where they"re coming from, not where they"re going. Pressure gradient force (pgf) measured upwards from high atmospheric pressure to low. Coriolis force (cf) measured across an isobar from the starting angle of the pressure gradient force. Always acts at 90 degrees to the right of the object in motion in n. hemisphere.
