HS3 Science Team Meeting, Moffett Field, California, 9 May, 2013
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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?. - PowerPoint PPT Presentation
Transcript of 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?
OK…then which one?Here are a few that have been published!
We need to see how some of these conceptual models combine to tell a coherent story
Let’s look at the inner core features
Freely adapted from Willoughby 1988
Eyewalls and Rainbands
Hence and Houze 2012Rainband composite from TRMM PR
Stratified by environment shear
Imported
LocalLocal
Inner
Outer
Reflectivity CFADs
Hence and Houze 2012
Inner region Outer region
Reflectivity Kurtosis
Hence and Houze 2012
Didlake and Houze 2009
Upwind end of a Principal Rainband
wUpdrafts DowndraftsDowndrafts
Middle Section of a Principal RainbandBarnes et al. 1983
Powell 1990Hence and Houze 2008
Didlake and Houze 2009
Middle Section of a Principal Rainband
Didlake and Houze 2013a
>0
Didlake and Houze 2013b
Downwind Section of a Principal Rainband
>0
Enhanced stratiform
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?
Question for discussion?
• Can AV-1 flight patterns achieve the objective of understanding rainband dynamics?
End
This research is supported by NASA grant NNX12AJ82G and NSF grant ATM-0743180
