"Lec 14 - Coriolis Force and Storms" The Atmosphere, the Ocean and Environmental Change (GG 140) Large scale air motion in the atmosphere occurring sufficiently above the surface is in geostrophic balance. Areas of high and low pressure anomalies in the atmosphere are surrounded by rotating flow caused by the balance between the pressure gradient and Coriolis forces. The direction of rotation around these pressure anomalies reverses between the northern and southern hemispheres due to the reversal in sign of the Coriolis force across the equator. This can be seen in the reverse direction of the spiraling of clouds in satellite images of hurricanes in the northern and southern hemispheres. Convective storms are also discussed. 00:00 - Chapter 1. Pressure Anomalies on Weather Maps 09:57 - Chapter 2. Geostrophic Adjustment 15:38 - Chapter 3. Hurricanes in the Northern and Southern Hemispheres 18:23 - Chapter 4. Coriolis Force and Toilet Bowl Mythology 24:51 - Chapter 5. Definition of a Storm 29:26 - Chapter 6. Convective and Frontal Storms 33:24 - Chapter 7. Airmass Thunderstorms 36:36 - Chapter 8. Severe Thunderstorms 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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