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HS3 Science Team Meeting, Moffett Field, California, 9 May, 2013

Conceptual Models of Tropical Cyclone Structures R. A. Houze University of Washington (with A. Didlake and D. Hence). HS3 Science Team Meeting, Moffett Field, California, 9 May, 2013. The over-storm GH raises the question: Can HS3 verify conceptual models that have been published?.

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HS3 Science Team Meeting, Moffett Field, California, 9 May, 2013

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  1. Conceptual Models of Tropical Cyclone Structures R. A. Houze University of Washington (with A. Didlake and D. Hence) HS3 Science Team Meeting, Moffett Field, California, 9 May, 2013

  2. The over-storm GH raises the question:Can HS3 verify conceptual models that have been published?

  3. OK…then which one? Here are a few that have been published!

  4. We need to see how some of these conceptual models combine to tell a coherent story

  5. Let’s look at the inner core features

  6. Eyewalls and Rainbands Freely adapted from Willoughby 1988

  7. Hence and Houze 2012 Rainband composite from TRMM PR Stratified by environment shear Inner Outer Imported Local

  8. Reflectivity CFADs Hence and Houze 2012

  9. Reflectivity Kurtosis Inner region Outer region Hence and Houze 2012

  10. Upwind end of a Principal Rainband Didlake and Houze 2009

  11. Middle Section of a Principal Rainband Barnes et al. 1983 Powell 1990 Hence and Houze 2008 Didlake and Houze 2009 Updrafts Downdrafts Downdrafts w

  12. Middle Section of a Principal Rainband >0 Didlake and Houze 2013a

  13. Downwind Section of a Principal Rainband Enhanced stratiform >0 Didlake and Houze 2013b

  14. How can HS3 flights confirm or reject conceptua models based on TRMM radar and airborne Doppler observations? • Locate major rainbands in GH data • Determine if their structures conform to the patterns seen in TRMM data • Locate downwind stratiform zones • Look for the cross-band mesoscale over turning in HIWRAP & other remote sensor data • Use dropsondes to determine the rainband momentum budgets • Do the results look like the conceptual model?

  15. Question for discussion? • Can AV-1 flight patterns achieve the objective of understanding rainband dynamics?

  16. End This research is supported by NASA grant NNX12AJ82G and NSF grant ATM-0743180

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