1. Jet Stream

2. 250 mb isotach

4. Main Upper Tropospheric Jets Closely Associated with the Tropopause

5. Tropopause

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

8. Tropopause Height http://weather. ou

9. Subtropical Jet Stream

12. Subtropical Jet Stream Often Associated with a cloud band

13. http://itg1. meteor. wisc

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

18. 250 mb isotach

19. 1000-500 mb thickness-large thickness gradient and thus thermal wind near jet core

20. Or alternatively…

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

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

23. Other Jets
African Easterly Jet

24. Sierra Nevada Barrier Jet

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