13 Global Climate and the Coriolis Force

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The Atmosphere, the Ocean and Environmental Change (GG 140) • • The circulation in the atmosphere is composed of three circulation cells in the northern and southern hemispheres. These cells are caused by the rotation of the Earth which creates the Coriolis force. The Coriolis force deflects northern hemisphere motion to the right and southern hemisphere motion to the left. The majority of large-scale motion in the atmosphere is in geostrophic balance, meaning the Coriolis force acting on the motion is balanced by a pressure gradient force. The rotation of cyclones and anticyclones in the northern and southern hemispheres is controlled by this geostrophic balance. • • 00:00 - Chapter 1. Three-Cell Circulation Model of the Earth's Atmosphere • 02:28 - Chapter 2. Geostationary Satellite Images of Clouds • 11:40 - Chapter 3. Climate Terminology • 18:11 - Chapter 4. Dynamics that Drive Atmospheric Motion • 22:38 - Chapter 5. Coriolis Force • 33:07 - Chapter 6. Geostrophic Balance • • Complete course materials are available at the Open Yale Courses website: http://oyc.yale.edu • • This course was recorded in Fall 2011.

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