1 / 7

Global Winds Summary

Global Winds Summary. Tropopause. Sahara. Kalahari. Equator. 0. 0. 30. 30.

zena-contreras
Download Presentation

Global Winds Summary

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Global Winds Summary Tropopause Sahara Kalahari Equator 0 0 30 30 Moist air rises from the equator. It cools due to expansion and loses its moisture as rain. When it reaches the tropopause the dry air spreads north and south, cools and sinks at about 25 to 30 latitude. As the air descends it warms due to compression creating the dry desert regions of the world.

  2. Global Winds The Trade WindsAfter descending at 30 latitude, air moves back toward the Equator along the surface; however, due to the Coriolis Effect the winds are curved to the east.

  3. Global Winds Northeast Trades Westerlies The 1492 Voyage of ColumbusIn 1492 Christopher Columbus sailed on the Trade winds to reach the Bahamas, Cuba, and Hispaniola. The 1492 route of Columbus

  4. Global Winds o 30 o 60 The Prevailing WesterliesThe major air flow over the USA is from the south west. These winds are called the Prevailing Westerlies. Were it not for invasions of cold air from the polar front and complications as air passes over the Rocky Mountains, weather in the USA would be stable because of the Westerlies.

  5. Global Winds o o 30 30 o 0 o o 60 60 How the Westerlies FormAir descends at 30 North. Some of this air heads northward and is deflected to the right by the Coriolis Effect. These surface winds form the Prevailing Westerlies.

  6. Global Winds Polar Easterlies Westerlies Trades The Polar EasterliesThe Polar Easterlies bring cold air south from the poles. The Polar Easterlies collide with the Prevailing Westerlies at 60 North. Air rises at 60 North forming the polar front low.

  7. Global Winds At the Polar Front, warm moist air from the south pushes over heavier cold air. Bad weather results.

More Related