Chapter 9, Part 2

Newton’s Laws

Forces that Influence Wind

Pressure Gradient Force

Pressure Gradient

Coriolis Force

Direction of the Coriolis Force

Dependence on Latitude

Dependence on Speed

Effect of Coriolis Force on Wind

Straight-line Flow Aloft

Origin of Geostrophic Winds

Wind Speed and Isobars

Isobar and Wind Pattern

Wind Flow around Highs and Lows

Centripital Acceleration

Direction of Rotation

Comparison of Northern and Southern Hemispheres (L)

Wind Direction at Upper Levels

Wind Direction near the Surface

Frictional Force

Relative Orientation of Wind Direction and Pressure Gradient

Surface Friction and Cyclones

Divergence and Convergence

Hydrostatic Equilibrium

Summary