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Jet Stream

Jet Stream. 250 mb isotach. Main Upper Tropospheric Jets Closely Associated with the Tropopause. Tropopause. Tropospause Heights. Tropopause height changes rapidly at subtropical and polar jets Higher in ridges and lower in troughs.

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Jet Stream

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  1. Jet Stream

  2. 250 mb isotach

  3. Main Upper Tropospheric Jets Closely Associated with the Tropopause

  4. Tropopause

  5. Tropospause Heights • Tropopause height changes rapidly at subtropical and polar jets • Higher in ridges and lower in troughs

  6. Tropopause Heighthttp://weather.ou.edu/~scavallo/images/real_time/trop_pressure/trop_pressure.html

  7. Subtropical Jet Stream

  8. Subtropical Jet Stream Often Associated with a cloud band

  9. http://itg1.meteor.wisc.edu/wxwise/AckermanKnox/chap7/subtropical_jet.htmlhttp://itg1.meteor.wisc.edu/wxwise/AckermanKnox/chap7/subtropical_jet.html

  10. Jet Stream’s Relationship to Temperature Can Be Shown through Thermal Wind Arguments

  11. 250 mb isotach

  12. 1000-500 mb thickness-large thickness gradient and thus thermal wind near jet core

  13. Or alternatively…

  14. The Jet Stream Recall the horizontal temperature effects on the pressure: 500 mb 700 mb 850 mb Psurface Warm Cold

  15. The Jet Stream Consider the balance of forces at each level: Co PGF 500 mb 700 mb 850 mb Ps Warm Cold

  16. Other Jets African Easterly Jet

  17. Sierra Nevada Barrier Jet

  18. There are a variety of jet stream configurations that are well-known

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