1. Jet Stream

2. 250 mb isotach

4. Main Upper Tropospheric Jets Closely Associated with the Tropopause

5. Tropopause

6. Tropopause Height http://www.atmos.washington.ed u/~hakim/tropo/tropo.html http://www.atmos.washington.ed u/~hakim/tropo/tropo.html

8. Subtropical Jet Stream

11. Subtropical Jet Stream Often Associated with a cloud band

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

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

17. 250 mb isotach

18. 1000-500 mb thickness-large thickness gradient and thus thermal wind near jet core

19. Or alternatively…

20. The Jet Stream Recall the horizontal temperature effects on the pressure: 500 mb 700 mb 850 mb WarmCold P surface

21. The Jet Stream Consider the balance of forces at each level: 500 mb 700 mb 850 mb WarmCold PsPs PGF CoCo

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