GG101 Lecture Notes - Lecture 11: Pressure-Gradient Force, Coriolis Force, Pressure Gradient
Document Summary
Gg101 lecture 11: pressure gradient force between areas of high and low pressure 3. Friction between the moving air and the earth"s surface: coriolis forces results from the spinning of the earth relative to the air. Pressure on weather maps: a pressure gradient is a change in whatever you"re measuring, relationship between wind and speed energy gradient changes pressure, gradient changes winds which ultimately changes temperature gradient. Surface winds blow from: vertically, winds move from. Coriolis force: it only affects direction not speed. Friction force: friction that surface features create as air moves across them, causes moving air to mechanically decelerate or change direction, friction force interaction of wind and surface. Direction of the wind flow results from the balance of the 3. Forces: friction force slows wind down reducing the coriolis force, and the pressure gradient force becomes more dominant. Atmospheric patterns of motion: primary high-pressure and low-pressure areas, upper atmospheric circulation, local winds, monsoonal winds.
