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Chapter 3: isentropic analysis

Chapter 3: isentropic analysis. 3.1 isentropic coordinate system 3.2 isentropic chart interpretation 3.3 vertical motion on isentropic charts. isentropic coordinates. derivation of the equations of motion in isentropic coordinates: on blackboard. isobaric coordinates.

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Chapter 3: isentropic analysis

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  1. Chapter 3: isentropic analysis 3.1 isentropic coordinate system 3.2 isentropic chart interpretation 3.3 vertical motion on isentropic charts

  2. isentropic coordinates derivation of the equations of motion in isentropic coordinates: on blackboard isobaric coordinates isentropic coordinates pros and cons of isentropic coordinates can be found in this meted module, by J. Moore

  3. Isentropic maps: some examples infer vertical motion – low levels 285 K L 800 850 900

  4. Isentropic maps: some examples same time, higher level 295 K 450 900

  5. 295 K – relative humidity suggests that storm-relative motion has an easterly component in E Montana

  6. Isentropic maps: some examples same time, upper levels infer vertical motion – relate to QG argument 325 K 200 200 300 200 500

  7. 280 K sample isentropic charts showing winds, pressure, and winds • College of Dupage • OU 2014/03/28/12Z 290 K 310 K

  8. 2014/03/28/12Z

  9. diagnosing vertical motion on isentropic charts: impact of storm motion time 2 time 1 time 1 c (u,v)storm-relative = (u,v) - c This is discussed further in Section 6 of this meted module, by J. Moore

  10. vertical motion & diabatic processes layer perspective parcel perspective

  11. textbook case study: 3 Jan 2002, 00 UTC296 K surface

  12. 500 mb height & abs vort - same time

  13. 500 mb height & SLP same time

  14. 500 mb height & Q vectors & Q divergence - same time

  15. 500 mb height & 700 mb omega - same time

  16. x Greensboro IDV 3D plot of 296K isentropic surface wind vectors on this surface same time (00 Z on 3 Jan 2002)

  17. Greensboro (GSO) sounding same time

  18. GSO pressure and winds on the 296K isentropic surface same time

  19. 296K pressure & wind 296K pressure & storm-relative wind c = 8.5 m/s towards the ESE

  20. 296K pressure & storm-relative wind & mixing ratio (g/kg) – same time

  21. 296K pressure & storm-relative wind & precipitation (dBZ) – same time

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