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The role of shearwise vertical motions in the development of an intense upper-level front

This study explores the impact of shearwise vertical motions on upper-level fronts, examining the forces driving necessary subsidence and the role of temperature advection. Canonical jet streak circulation and vorticity advection play key roles, while Qs vectors describe rotation of gradients and associated vertical motion.

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The role of shearwise vertical motions in the development of an intense upper-level front

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  1. The role of shearwise vertical motions in the development of an intense upper-level front The role of shearwise vertical motions in the development of an intense upper-level front Andrea A. Lang and Jonathan E. Martin University of Wisconsin-Madison Andrea A. Lang and Jonathan E. Martin University of Wisconsin-Madison

  2. What forces the necessary subsidence?

  3. What forces the necessary subsidence?

  4. What forces the necessary subsidence?

  5. What forces the necessary subsidence?

  6. What forces the necessary subsidence?

  7. What forces the necessary subsidence? Canonical jet streak circulation can also be considered in terms of vorticity advection by the thermal wind Sutcliffe (1947) and Trenberth (1978) show that this simplified expression depends upon neglecting deformation terms - not wise when considering fronts/jets

  8. What forces the necessary subsidence? Canonical jet streak circulation can also be considered in terms of vorticity advection by the thermal wind Sutcliffe (1947) and Trenberth (1978) show that this simplified expression depends upon neglecting deformation terms - not wise when considering fronts/jets

  9. What forces the necessary subsidence? Canonical jet streak circulation can also be considered in terms of vorticity advection by the thermal wind Sutcliffe (1947) and Trenberth (1978) show that this simplified expression depends upon neglecting deformation terms - not wise when considering fronts/jets

  10. What forces the necessary subsidence? Temperature advection along the jet alters the distribution of ascent/descent. Specifically, cold air advection in cyclonic shear leads to subsidence directly beneath the jet axis So, cold air advection in cyclonic shear (i.e. along the jet) is strongly upper-frontogenetical Is there a way to relate rotation of isentropes to vertical motion?

  11. What forces the necessary subsidence? Temperature advection along the jet alters the distribution of ascent/descent. Specifically, cold air advection in cyclonic shear leads to subsidence directly beneath the jet axis So, cold air advection in cyclonic shear (i.e. along the jet) is strongly upper-frontogenetical Is there a way to relate rotation of isentropes to vertical motion?

  12. What forces the necessary subsidence? Temperature advection along the jet alters the distribution of ascent/descent. Specifically, cold air advection in cyclonic shear leads to subsidence directly beneath the jet axis So, cold air advection in cyclonic shear (i.e. along the jet) is strongly upper-frontogenetical Is there a way to relate rotation of isentropes to vertical motion?

  13. What forces the necessary subsidence? Temperature advection along the jet alters the distribution of ascent/descent. Specifically, cold air advection in cyclonic shear leads to subsidence directly beneath the jet axis So, cold air advection in cyclonic shear (i.e. along the jet) is strongly upper-frontogenetical Is there a way to relate rotation of isentropes to vertical motion?

  14. What forces the necessary subsidence? Temperature advection along the jet alters the distribution of ascent/descent. Specifically, cold air advection in cyclonic shear leads to subsidence directly beneath the jet axis So, cold air advection in cyclonic shear (i.e. along the jet) is strongly upper-frontogenetical Is there a way to relate rotation of isentropes to vertical motion?

  15. What forces the necessary subsidence? Temperature advection along the jet alters the distribution of ascent/descent. Specifically, cold air advection in cyclonic shear leads to subsidence directly beneath the jet axis So, cold air advection in cyclonic shear (i.e. along the jet) is strongly upper-frontogenetical Is there a way to relate rotation of isentropes to vertical motion?

  16. QN forces Transverse Couplets

  17. QN forces Transverse Couplets

  18. QN forces Transverse Couplets

  19. QN forces Transverse Couplets

  20. Qs vectors describe ROTATION of q and the associated VERTICAL MOTION

  21. Qs vectors describe ROTATION of grad q and the associated VERTICAL MOTION

  22. 0000 UTC 11 November 2003 500 hPa F, T, and z 300 hPa F and isotachs

  23. 1200 UTC 11 November 2003 500 hPa F, T, and z 300 hPa F and isotachs

  24. 0000 UTC 12 November 2003 500 hPa F, T, and z 300 hPa F and isotachs

  25. 1800 UTC 12 November 2003 500 hPa F, T, and z 300 hPa F and isotachs

  26. 0000 UTC 13 November 2003 500 hPa F, T, and z 300 hPa F and isotachs

  27. 0000 UTC 11 November 2003 Total QG w Shearwise QG w Transverse QG w

  28. 0000 UTC 11 November 2003 Total QG w Shearwise QG w Transverse QG w

  29. 1200 UTC 11 November 2003 Total QG w Shearwise QG w Transverse QG w

  30. 1200 UTC 11 November 2003 Total QG w Shearwise QG w Transverse QG w

  31. 1200 UTC 11 November 2003 Total QG w

  32. 1200 UTC 11 November 2003 Shearwise QG w Transverse QG w

  33. 0000 UTC 12 November 2003 Total QG w Shearwise QG w Transverse QG w

  34. 0000 UTC 12 November 2003 Total QG w Shearwise QG w Transverse QG w

  35. 0000 UTC 12 November 2003 Total QG w

  36. 0000 UTC 12 November 2003 Shearwise QG w Transverse QG w

  37. Total QG w 1800 UTC 12 November 2003 Shearwise QG w Transverse QG w

  38. Total QG w 1800 UTC 12 November 2003 Shearwise QG w Transverse QG w

  39. 1800 UTC 12 November 2003 Total QG w

  40. 1800 UTC 12 November 2003 Shearwise QG w Transverse QG w

  41. 0000 UTC 13 November 2003 Total QG w Shearwise QG w Transverse QG w

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