Transcript 140501NASA-Ames_HS3v05_Houze.ppt

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
Eyewalls and
Rainbands
Houze 2010
Freely adapted from
Willoughby 1988
Relation of Eyewall and Rainband
Convection to Shear
Hence and Houze 2012
TRMM PR data suggest
eyewall convective
development relative
to shear
DL
DR
UL
UR
DeHart, Houze, and Rogers 2014
P3 dual-Doppler data confirm the Hence & Houze hypothesis
DL
DR
Outer
Hence and Houze 2012
Statistics of rainband
structure as seen by
TRMM PR
Inner
UL
UR
Imported
Local
Eyewalls and
Rainbands
Houze 2010
Freely adapted from
Willoughby 1988
Eyewalls and
Rainbands
Houze 2010
Freely adapted from
Willoughby 1988
How do we use the “over-storm” aircraft
to investigate the eyewall & rainband
convection?
Ops. Plan modules for the “over-storm” aircraft
What could we do that would be more
realistic to accomplish with the overstorm GH?
DL
DR
Outer
Extensive
“Figure 4”
Inner
UL
UR
Imported
Local
What could we learn from this
approach?
Dynamics:
Didlake & Houze 2013
Based on RAINEX
ELDORA data
Environment Interaction:
HS3 dropsondes indicate interaction in the rainband
region….Courtesy D. Hence
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
End
This research is supported by NASA grant NNX12AJ82G and NSF grant ATM-0743180