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An Overview of the Hurricane Imaging Radiometer (HIRAD)

An Overview of the Hurricane Imaging Radiometer (HIRAD)

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An Overview of the Hurricane Imaging Radiometer (HIRAD)

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  1. An Overview of the Hurricane Imaging Radiometer (HIRAD) Robbie Hood, Ruba Amarin, Robert Atlas, M.C. Bailey, Peter Black, Courtney Buckley, Shuyi Chen, Roger DeRoo, Salem El-Nimri, Steve Gross, Christopher Hennon, Glenn Hopkins, Mark James, James Johnson, Linwood Jones, Frank LaFontaine, Timothy Miller, Christopher Ruf, David Simmons, Eric Uhlhorn, and Joe Cione

  2. Team Roles • NASA PI – Robbie Hood NOAA PI – Eric Uhlhorn • Technical Advisory Committee – Joe Cione, Marty Kress, Joe Casas, Mark Boudreaux • Engineering Partners – M.C. Bailey, Roger DeRoo, Steve Gross, Mark James, James Johnson, Linwood Jones, Christopher Ruf, and David Simmons • Science Partners - Ruba Amarin, Robert Atlas, Peter Black, Courtney Buckley, Shuyi Chen, Salem El-Nimri, Christopher Hennon, James Johnson, Linwood Jones, Frank LaFontaine, Timothy Miller, Christopher Ruf

  3. HIRAD Technology Investment Roadmap Satellite Demonstration of Improved Hurricane Ocean Surface Vector Winds and Rain Rate Unmanned Aerial Vehicle Demonstration (optional) Aircraft Demonstration Technology Transfer Operational Reconnaissance Hurricane Aircraft (optional) Technology Brassboard Demonstration in Laboratory

  4. Univ. of Michigan NASA Univ. of Alabama/Huntsville NOAA Univ. of Central Florida Overview HIRAD Description HIRAD Design Team C-band (4-7 GHz) frequencies Synthetic thinned array radiometer (STAR) Pushbroom imager Single polarization for ocean wind speed Dual polarization for ocean vector wind HIRAD Development Timeline

  5. Sensitivity of WindSat 6.8 GHz Based on 2006 H*Wind analysis of Hurricanes Dennis, Katrina, Rita

  6. Technical Overview Sideview of antenna element • Utilization of NASA Earth Science Office Technologies • Synthetic thinned aperture radiometer • Digital correlation in field programmable gate array • Radio Frequency Interference mitigation • Sensor Web information technology Engineering conceptwith aircraft fixtures

  7. Observing Systems Simulation Experiment Results presented by Tim Miller at AMS Annual Meeting (Jan 08) and AMS Hurricane Conference (Apr 08) HURRICANE FRANCIS NATURE RUN =20 mm/hr SIMULATED DATA FROM NATURE RUN With SFMR With HIRAD (11 km) Double-headed arrow indicates HIRAD swath width

  8. Aircraft OSSE using H*Wind Nature Run in H*Wind Simulated without HIRAD 121 109 117 Simulated with HIRAD at 20 km Simulated with HIRAD at 3 km 125 82 109

  9. Satellite OSSE using H*Wind Nature Run in H*Wind Simulated without HIRAD 121 109 117 Simulated with HIRAD at 350 km 125 82 109

  10. Preliminary Mission Study Example of sensor swath coverage of an Atlantic hurricane (yellow symbol) over a typical 24-hour period. XOVWM swath is red and HIRAD swath is blue. Performance Characteristics for HIRAD

  11. Potential Benefits • Imagery • Wind Speeds (10 – 85 m/s or greater) • Rainrate (0-50 mm/hr or greater) • All weather sea surface temperatures • Aircraft • Suitable for multiple aircraft • Improved spatial coverage • Satellite • Developing consistent record of hurricane intensity for future climate monitoring • Expanding information available to developing countries with limited observational assets

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