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Air Pressure, Forces, and Motion Meteorology 101 Dr. Robert M MacKay.

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Presentation on theme: "Air Pressure, Forces, and Motion Meteorology 101 Dr. Robert M MacKay."— Presentation transcript:

1 Air Pressure, Forces, and Motion Meteorology 101 Dr. Robert M MacKay

2 Pressure Temperature Volume The Gas Law P=C*density*Temp P=2.87 T

3 Gas Laws

4 Constant P as T increases V Increases/decreases Constant V as T increases P Increases/decreases Constant T as V increases P Increases/decreases Constant V,T as M increases P Increases/decreases

5 Gas Laws Constant P as T increases V Increases/decreases Constant V as T increases P Increases/decreases Constant T as V increases P Increases/decreases Constant V,T as M increases P Increases/decreases

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10 Mercury Barometer Pressure Measurement 1013 mb = 1013 hPa Millibar hectoPascal 1013 mb in Hg 76 cm Hg 760 mm Hg 760 Torr 14.7 psi

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13 Station Pressure + Elevation(meter)/10 = Sea Level Pressure

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24 Newtons Laws of Motion Newtons 3 laws of motion 1. Law of inertia 2. Net Force = mass x acceleration ( F = M A ) 3. Action Reaction

25 1st Law (Law of Inertia) Every object continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it. acceleration = 0.0 unless the objected is acted on by an unbalanced force

26 1st Law Inertia (The intrinsic tendency of an object to rest changes in motion) Mass is a measure of an objects inertia Mass is also a measure of the amount of an objects matter content. (i.e. protons, neutrons, and electrons)

27 Newtons 2nd Law Net Force = Mass x Acceleration F = M A

28 Newtons Law of Action Reaction (3rd Law) You can not touch without being touched For every action force there is and equal and oppositely directed reaction force

29 Forces that influence the wind 1. Pressure Gradient Force 2. Coriolis Force 4. Friction On average gravity nearly balances the vertical Pressure gradient (hydrostatic balance)

30 Pressure Gradient=P/dist

31 Pressure Gradient

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33 Centrifugal force an (Apparent Force)

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35 Coriolis Force (apparent force due to Earths rotation)

36 Coriolis Force

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