OCS 1005 Chapter : Atmospheric Circulations

• School: LSU
• Department: Oceanography & Coastal Sciences
• Course: OCS 1005
• Professor: All

Document Summary

~ heat budget - over long time periods, amount of incoming heat = amount of heat going out so, Earth is tilted which gives seasons more heat. Spring/fall - equinox line of illumination goes across the planet. Winter - northern hemisphere tilted away from sun. When sun"s rays are perpendicular (the equator) there is more heat on the surface than at an angle or parallel to the surface (poles) sun is indirect, = less heat. ~ solar convection - air is near gets warm less dense air - warm air rises. [see video (4:16) cannonball example: the apparent de ection of objects (including air) from their initial course. When air ows to the surface of the earth from the south to the north (as in farrell cells) again, in the northern hemisphere these winds are de ected to the right and ow from. Opposite in southern hemisphere: winds are de ected to the left, but the same rules apply.