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Community Airborne Platform Remote-sensing Interdisciplinary Suite
MPAR Working Group MeetingOffice of the Federal Coordinator for Meteorology
NCAR Earth Observing Laboratory
James Moore, Wen-Chau Lee, J. Vivekanandan, Eric Loew, Scot Spuler,
www.eol.ucar.edu/developments/capris
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•Addressing Mesoscale processes•TC research and forecasting
•Measuring Aerosol and Cloud Structure•BL and full depth structure and tracking
•Climate Change Components (e.g. clouds,Precipitation, water vapor, aeorsols)
•Impacts local , regional and global•Data assimilation and model validation
CAPRIS Research Highlights
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• Eye safe Lidars• Phased array CM radar
• World class aircraft platforms• Real-time Data processing and
display• Processed data satellite relay to the
ground• Ground based deployment
CAPRIS Technology Highlights
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Mid-Size Infrastructure for Atmospheric Sciences
ATM maintains a mid-size infrastructure account that can be used to build and/or acquire community facilities.
Several groups will be competing for available funds
General Considerations (highlights)• Community facility• Available funds for larger projects• Instrumentation and observing platforms are eligible• Partnerships with university, federal, private, or international institutions
are encouraged.
EOL has been encouraged to submit a White-paper for CAPRIS
• Key time for community comment and advice on present concepts• Revised White Paper Document due to NSF Mid March 2007• NSF ‘go-ahead’ decision for full proposal expected in summer 2007• NSF funding decision anticipated in fall 2007
The NSF Opportunity
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Instrument SciencePolarimetric airborne centimeter Doppler Radar – C or X bands
Hurricanes, severe storms, convection initiation, tropical meteorology. Kinematics and microphysical processes.
Pod based dual-wavelength, dual-polarization, millimeter wave Doppler radar – W, Ka Bands
Cloud and drizzle microphysics, ice microphysics, and cloud radiation properties
H2O Differential Absorption Lidar (DIAL), O3 DIAL, Doppler Wind Lidar (UTLS and PBL systems) CO2 DIAL, Vegetation Canopy Lidar
Climate change, fluxes and transport of water vapor, ozone, and pollutants from boundary layer to UTLS, gravity waves
Community Airborne Platform Remote-sensing
Interdisciplinary Suite (CAPRIS)
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Examples of Combined Measurements
Cai et al. (2006)
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CAPRIS Configurations -- AirborneCM-Radar• Four active element scanning array
(AESA) conformal antennas– C band side-looking– X band top, bottom looking
• Dual Doppler (V, σv)• 4 x resolution of current system due
to simultaneous fore and aft beams from all four antennas
• Dual polarization H,V linear– ZH, ZDR, KDP, LDR, RHOHV
MM-Radar• Dual polarization H,V linear
– ZH, ZDR, KDP, LDR, RHOHV
• Dual wavelength (W,Ka)• Pod-based scanning• Doppler (V, σv)
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Lower AESA
Upper AESA
Starboard AESA
Port AESA
W, Ka band Pod
C-130 front view
Possible CAPRIS Radar Positions on C-130
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WXR 700 CWeatherAvoidance Radar
PortAESA
StarboardAESA
RearRampAESA
Composite Surveillance Scan for C-130 using CAPRIS CM radar and Onboard Weather Surveillance radar
TopAESA
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FOREReflector
Top View, Left Wing
Zenith
LeftWing
Nadir
Fuselage
Vertical Scan Limits
FORE
HIAPER Cloud Radar (HCR) Position in the Pod on the GV
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1
1
1
1
H2 O
DIA
L/A
ero
sol
H2 O
DIA
L/A
ero
sol
General Locations of AESA antenna beams (blue tint), MM radar Beams (green tint) and Lidar beams (purple)
on NCAR C-130 Aircraft
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The ‘Community’ in CAPRISA Development Partnership
•Institutional Collaboration (24 people from >6 groups)•Scientific and Technical Collaboration (20 people from >15 Educational Institutions) •Town Hall Meetings at Major Conferences (ERAD, AGU, AMS•Special Visit to institutions for seminars •Special Focus Round tables (Mesoscale and Biogeosciences•Seminars adjunct to Project Workshops•International Exchange (e.g. ICMCS, Taiwan, Japan, Germany)
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Three Major AESA Options
•X-band dual-pol, alternating H,V transmit/receive
•C-band dual-pol, simultaneous H,V transmit/receive
•Wide-band (X,C) dual-pol, simultaneous H,V transmit/receive
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Options Beamwidth(θh x θv)
Sensitivity dBZ @ 10 km
Co-Polar Variables
Cross-Polar Variables
Along Track Res. (m)
X-BandDual-Pol 1.3° x 1.1° -9
ZH,ZDR,KDP,
RHOHV
LDR 150
C-BandDual-Pol 2.0° x 1.6° -4
ZH,ZDR,KDP,
RHOHV
None 130
Wide-Band (X,C)
Dual-Pol
1.2° x 1.0° (X)
2.0° x 1.6° (C)
-10 (X)-2 (C)
ZH,ZDR,KDP,
RHOHV
None 150/130
ELDORA 1.8° x 2.0° -11 ZH None 300
Technical CharacteristicsAESA Airborne Configurations
Some Final Thoughts on CAPRIS
•Community resource for addressing key science questions•Airborne and ground based deployment options•Radar and lidar components•Community input to design requirements•Seeking collaboration with community, agencies and industry•Active testbed for R&D and collaboration