27th Conference on Hurricanes and Tropical Meteorology, Monterey, CA, 27 April 2006

1
27th Conference on Hurricanes and Tropical
Meteorology, Monterey, CA, 27 April 2006
2
(No Transcript)
3
Hurricanes investigated in RAINEX
Katrina
Ophelia
Rita
4
Motivation for RAINEX
Understanding Rapid Intensity Changes
5
(No Transcript)
6
Intensity change problem
How do interactions of eyewalls rainbands in
the mature storm
lead to intensity changes like these?
7
RAINEX Flight Coordination
ELDORA radar
8
Plan--target dropsondes and Doppler
9
Plan--target dropsondes and Doppler
10
Katrina
11
Katrina-28 August
NRL
12
Katrina-28 August
NRL
13
Katrina-28 August
Confirms Barnes structure
14
Rita
15
RAINEX Flights in Hurricane Rita
16
Rita-21 September Intensifying to Cat. 5
17
Rita-21 September Intensifying to Cat. 5
18
Rita-21 September Intensifying to Cat. 5
Dropsondes
19
Rita-22 September-Concentric Eyewalls
20
Rita-22 September-Concentric Eyewalls
ELDORA composite
Kossin et al. 2000
vorticity
21
Rita-22 September-Concentric Eyewalls
Dropsonde in the moat region
22
Rita-23 September-Sheared
Shear
23
Ophelia
24
Ophelia-9 September-Dry Midlevel Inflow
25
Data Availability
26

• CONCLUSIONS
• RAINEX Notables
• 3 hurricanesKatrina, Ophelia, Rita
• Innovative satellite-based flight control
• First use of ELDORA in a hurricane
• Data available via NCAR Field Catalog
• Katrina and Rita details
• K Rs spiral rainbands had Atlas Barnes
  structures
• R sampled in 3 stages rapid int., 2nd eyewall,
  shear
• Echo cores in eyewalls were linear oblique
• Moat region had eye-like sounding
• Dry air entered in subsiding mesoscale midlevel
  inflows

Katrina
Ophelia
Rita
27
Thanks
28
(No Transcript)