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JHT Project: Operational SFMR-NAWIPS Airborne Processing and Data Distribution Products

JHT Project: Operational SFMR-NAWIPS Airborne Processing and Data Distribution Products. OUTLINE 2006 Hurricane Season Precipitation Model Next Steps. Dr. Peter Black & Eric Uhlhorn NOAA / AOML / HRD Dr. Paul Chang, Dr. Tim Mavor NOAA / NESDIS / ORA Dr. James Carswell

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JHT Project: Operational SFMR-NAWIPS Airborne Processing and Data Distribution Products

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  1. JHT Project: Operational SFMR-NAWIPS Airborne Processing and Data Distribution Products OUTLINE 2006 Hurricane Season Precipitation Model Next Steps Dr. Peter Black & Eric Uhlhorn NOAA / AOML / HRD Dr. Paul Chang, Dr. Tim Mavor NOAA / NESDIS / ORA Dr. James Carswell Remote Sensing Solutions Acknowledgements NOAA AOC and ProSensing

  2. 2006 Hurricane Season SFMR performed well … • GPS comparison: ~ 1 m/s bias, 3 m/s std dev • Only 11 anomalies noted observed – all explained.

  3. Summary of Anomalies

  4. Rain Model Limitation Rain Induced Anomaly

  5. SFMR Rain Rate Vs. IWRAP Rain Rate Bias (mm/hr) Multiplier Coefficient Error (percentage)

  6. SFMR Rain Rate Vs. IWRAP Wind Speed Bias (knots) Multiplier Coefficient Error (percentage)

  7. IWRAP Measurements • IWRAP Rain Retrievals • Differential Attenuation • Collocated with SFMR • High Resolution Specifications Frequency: C-band & Ku-band Polarization: VV, HH Beam Incidence Angles: 30, 35, 41.5, 50 Altitude Range: 500 – 8000 m Range Resolution: 15, 30, 60 & 120 m Simultaneous, Multi-Beam Doppler/Reflectivity Profiling Conical Scan (60 rpm) Swath Coverage ~ 55 deg. Incidence Proportionallynot to scale.

  8. SFMR Rain Rate Vs. IWRAP Hurricane Rita 22 Sept. 2005 • SFMR Rain Estimates • Under predicts rain rate • by a factor of 2.5 • Offset of 5 mm/hr SFMR Rain Rate (mm/hr) Bin Size: 2.5 mm/hr IWRAP Rain Rate (mm/hr)

  9. Hurricane Isabel: Attenuation Vs. Rain Rate • Corrected SFMR Rain Rate • UMass SFMR • Correction Factor: 2.5 • Offset: 5 mm/hr Rain Specific Attenuation (dB/km) Corrected SFMR Rain Rate (mm/hr)

  10. Precipitation: Next Steps • 2005 IWRAP rain rates. • Development and verification data. • Refine the SFMR precipitation model • (i.e. attenuation power law model). • Validate final SFMR retrievals. • Recommend necessary changes to JHT panel.

  11. Thank You QUESTIONS ?

  12. Ernesto Flights: SFMR Retrievals 29 August 2006 31 August 2006

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