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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