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Cross Equatorial Systems Northern and Southern Hemisphere Intrusions

Cross Equatorial Systems Northern and Southern Hemisphere Intrusions. Mike Davison HPC International Desks. Ridge Warm Core Anticyclonic (negative/clockwise) relative vorticity increases with height High tropopause heights. Trough Cold Core Cyclonic (Positive/

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Cross Equatorial Systems Northern and Southern Hemisphere Intrusions

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  1. Cross Equatorial SystemsNorthern and Southern Hemisphere Intrusions Mike Davison HPC International Desks

  2. Ridge Warm Core Anticyclonic (negative/clockwise) relative vorticity increases with height High tropopause heights Trough Cold Core Cyclonic (Positive/ counterclockwise) relative vorticity increases with height Low tropopause heights Characteristics of Northern Hemisphere Ridges and Troughs

  3. Northern Hemisphere Upper Ridge/Trough Pattern

  4. Northern Hemisphere RidgeWinds and Temperature

  5. Northern Hemisphere RidgeWinds and Potential Temperature

  6. Northern Hemisphere RidgeWinds and Relative Vorticity

  7. Northern Hemisphere TroughWinds and Temperature

  8. Northern Hemisphere TroughWinds and Potential Temperature

  9. Northern Hemisphere TroughWinds and Relative Vorticity

  10. Ridge Warm Core Anticyclonic (Positive/ counterclockwise) relative vorticity increases with height High tropopause heights Trough Cold Core Cyclonic (negative/clockwise) relative vorticity increases with height Low tropopause heights Characteristics of Southern Hemisphere Ridges and Troughs

  11. Southern Hemisphere Upper Trough/Ridge Pattern

  12. Southern Hemisphere RidgeWinds and Temperature

  13. Southern Hemisphere RidgeWinds and Potential Temperature

  14. Southern Hemisphere RidgeWinds and Relative Vorticity

  15. Southern Hemisphere TroughWinds and Temperature

  16. Southern Hemisphere TroughWinds and Potential Temperature

  17. Southern Hemisphere TroughWinds and Relative Vorticity

  18. What Happens When a Southern Hemisphere System Crosses the Equator? • Northern Hemisphere • Southern Hemisphere

  19. Does it behaves like a Nrn Hemisphere Ridge or a Srn Hemisphere Trough?

  20. Case Study 31 Oct 2001

  21. Evaluation of Upper Circulation over the Tropical Atlantic

  22. Vertical Cross Section of Temperature (C) and Winds

  23. Vertical Cross Section of Relative Vorticity and Winds

  24. Vertical Cross Section of Potential Temperature (K), Winds, and Relative Vorticity

  25. Vertical Cross Section of Potential Temperature (K) and Winds

  26. 250 hPa Winds and DivergenceObjective Analysis

  27. 250 hPa Winds

  28. 250 hPa Winds and DivergenceObjective Analysis

  29. Verification

  30. IR Loop

  31. WV Loop

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