1. University of Washington (with J. C. DeHart, D. Hence, A. C. Didlake)
Eyewall and rainband structure as a function of shear: Implications for Global Hawk sampling
R. A. Houze
University of Washington
(with J. C. DeHart, D. Hence, A. C. Didlake)
HS3 Science Team Meeting, Moffett Field, California, 1 May, 2014

2. Eyewalls and Rainbands
Houze 2010
Freely adapted from Willoughby 1988

3. Relation of Eyewall and Rainband Convection to Shear

4. Hence and Houze 2012
TRMM PR data suggest
eyewall convective development relative to shear DL DR UL UR

5. DeHart, Houze, and Rogers 2014
P3 dual-Doppler data confirm the Hence & Houze hypothesis

6. Statistics of rainband structure as seen by TRMM PR
Inner
Outer DL UL UR DR
Hence and Houze 2012
Statistics of rainband structure as seen by TRMM PR
Recall: how shear computed, how regions defined, what reflectivity statistics were analyzed
Imported
Local

7. Eyewalls and Rainbands
Houze 2010
Freely adapted from Willoughby 1988

8. Eyewalls and Rainbands
Houze 2010
Freely adapted from Willoughby 1988

9. How do we use the “over-storm” aircraft to investigate the eyewall & rainband convection?

10. Ops. Plan modules for the “over-storm” aircraft
Pie in the sky?

11. What could we do that would be more realistic to accomplish with the over-storm GH?

12. Extensive “Figure 4” DL DR Outer Inner UL UR Imported Local
Recall: how shear computed, how regions defined, what reflectivity statistics were analyzed
Imported
Local

13. What could we learn from this approach?

14. Based on RAINEX ELDORA data
Dynamics:
Didlake & Houze 2013
Based on RAINEX ELDORA data

15. Environment Interaction: HS3 dropsondes indicate interaction in the rainband region….Courtesy D. Hence

16. Why fly the rainband regions?
Understanding how environment air enters the storm
Understanding momentum buildup in the rainband zone
How can it be done?
Simple! Do figure 4’s out to greater distance

17. End
This research is supported by NASA grant NNX12AJ82G and NSF grant ATM