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Jet Streams

Jet Streams. By Eric Vaughn, Ford Williams, Russell Lowe, and Julie Lowe. Jet Streams. Jet streams were first noticed by atmospheric scientists in the 19 th century using kites. The first scientist to quantify jet streams was Japanese meteorologist, Wasaburo Ooishi. Formation.

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Jet Streams

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  1. Jet Streams By Eric Vaughn, Ford Williams, Russell Lowe, and Julie Lowe

  2. Jet Streams • Jet streams were first noticed by atmospheric scientists in the 19th century using kites. • The first scientist to quantify jet streams was Japanese meteorologist, WasaburoOoishi.

  3. Formation • A jet stream is a current of rapidly moving air. • A jet stream is formed in between a cold air mass and a warm air mass. • The main jet streams are Polar and Subtropical. • These sometimes collide, or they stay far apart.

  4. Jet Streams • Jet streams are the fastest currents in the upper atmosphere, and they travel between 10-15 kilometers. • A balloon released in a jet stream takes 2 weeks to completely travel around the globe. • The major jet streams flow from west to east. • When planes fly eastbound, they try to get in the jet stream to travel faster and save fuel. • When they fly westbound, they try to avoid the jet stream.

  5. Polar Jet Streams • The polar streams are the most common jet stream. • The polar stream wind speeds have an average speed of 35 mph in the summer. In the winter, the wind speed is 75 mph.

  6. Subtropical Jet Streams • Jet streams are usually 20,000 feet up in the air. • Subtropical jet streams are much higher in the air than Polar jet streams.

  7. Coriolis Effect • Since the earth rotates, the air currents are often curved. • If the earth didn’t rotate, the currents would travel from high pressure to low pressure. • In the Northern Hemisphere, the air currents are pulled toward the equator, and in the Southern Hemisphere, the air currents are pulled toward the equator.

  8. Coriolis Effect (cont.) • The pull is the strongest at the poles, and very weak near the equator. • Guspard-Gustave Coriolis came up with this theory. • Some scientists believe that the direction that toilets flush depends on what hemisphere it is located.

  9. Weather • The jet streams can blow storms to Alabama. • Jet streams vacuum up air and displace it. The displaced air piles up, and creates a high pressure area. • The area that the jet streams have sucked up is low pressure.

  10. Conclusion • A jet stream is a fast-moving current of air that forms between a hot and cold air mass. • It can affect weather tremendously, and jet streams are very important to weather forecasters.

  11. Bibliography • http://www.encyclopedia.com/topic/jet_stream.aspx • http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cyc/upa/jet.rxmlhttp://www.ask.com/?o=0&l=dir • http://en.wikipedia.org/wiki/Coriolis_effect

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