EESA09H3 Lecture : EESA09 Lec 2 Slides
9 Oct 2011
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Document Summary
Four distinct layers in the atmosphere: troposphere, stratosphere, mesosphere, thermosphere. Outline: part 1 wind primer, what is wind, global circulation, stratospheric winds (qbo, part 2 research, air mass classification system (sheridan) What is wind: movement of air in an. Not directly, we can see the effects of wind in dust, tree movement. What is wind: what causes air to move, differences in air pressure, vertical or horizontal, differences in pressure forms a pressure gradient, air tends to flow from high pressure to low pressure, called a pressure gradient force. Fictitious force due to rotation of the earth. In northern hemisphere causes a deflection to the right of the motion, to the left in the southern. 1835; described by george hadley a century before. Coriolis force: is related to the distance from the equator: acts at right angle to the wind affecting the direction. Surface winds: geostrophic wind is typical 1 km or so above the.
