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AODT The A dvanced O bjective D vorak T echnique JHT Progress Report - Latest Advancements

AODT The A dvanced O bjective D vorak T echnique JHT Progress Report - Latest Advancements. Timothy Olander, Christopher Velden, James Kossin, Anthony Wimmers, Howard Berger University of Wisconsin – Madison Cooperative Institute for Meteorological Satellite Studies (CIMSS). AODT

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AODT The A dvanced O bjective D vorak T echnique JHT Progress Report - Latest Advancements

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  1. AODT The Advanced Objective Dvorak TechniqueJHT Progress Report - Latest Advancements Timothy Olander, Christopher Velden, James Kossin, Anthony Wimmers, Howard Berger University of Wisconsin – Madison Cooperative Institute for Meteorological Satellite Studies (CIMSS)

  2. AODT The Advanced Objective Dvorak Technique JHT Status • Currently in Year-2 of support • Year-1 goals were achieved on-time • Delivery of initial AODT code to NOAA/CDB for • implementation within NAWIPS was completed successfully • Year-2 goals: Evaluate and refine N-AODT • New AODT version delivered to NOAA/CDB 31 January 2005 • to be implemented in time for upcoming Atlantic TC season

  3. AODT The Advanced Objective Dvorak Technique Latest Advancements • Improved, objective TC center determination • Spiral and Ring analysis schemes added to current methods • New strengthening/weakening constraints • Based on scene types; augment current rules in DT • Modified latitude bias MSLP adjustment scheme • Only applied with scene types based on IR cloud temperature • Added Radius of Maximum Wind (RMW) determination • Regression-based scheme from IR data in TCs with • well-defined eyes

  4. AODT The Advanced Objective Dvorak Technique Latest Advancements (cont.) • Enable user to add comments to history file • Up to 50 characters; can be viewed in history file listing • Restructured code as application library • Redefined code structure for integration into NAWIPS • as requested by NOAA/CDB • Easier future updates, version implements, etc.

  5. AODT The Advanced Objective Dvorak Technique Spiral Analysis Hurricane Isabel 13 Sept 2005 15:15UTC Spiral Analysis Initial Position Ring Analysis Combo Analysis Final Position Ring Analysis Initial Position

  6. AODT The Advanced Objective Dvorak Technique Spiral Analysis Cyclone 20P 27 Feb 2005 11:25UTC Spiral Analysis Initial Position Interpolated Official Forecast Position Ring Analysis Combo Analysis Final Position Ring Analysis Initial Position

  7. AODT The Advanced Objective Dvorak Technique Latest version (fully-automated) of CIMSS AODT Validation vs. Recon MSLP (hPa) Development sample: 1995–2003 Atlantic Seasons – 56 Total Storms Independent test: 2004 Atlantic Season – 14 Total Storms Op Center = Ave. of 3 Agency DT values

  8. AODT The Advanced Objective Dvorak Technique 1995–2003 Atlantic Seasons – 56 Total Storms – MSLP vs. Recon Formation Stage Mature Stage Dissipation Stage

  9. AODT The Advanced Objective Dvorak Technique

  10. AODT The Advanced Objective Dvorak Technique

  11. AODT The Advanced Objective Dvorak Technique Future Directions • Continue to work with TAFB analysts and TPC forecasters • to improve N-AODT performance • Conduct detailed statistical analysis of AODT performance • Identify AODT strengths and weaknesses, especially • with regards to scene type classifications • Provide periodic AODT updates to NOAA/CDB • Integrate AODT into satellite-based, multi-sensor TC intensity • estimation algorithm now under development • Poster by Velden et al.

  12. AODT The Advanced Objective Dvorak Technique Acknowledgements • NOAA/Joint Hurricane Testbed • NOAA/CDB/TPC Implementation Team • TAFB and SAB Analysts (AODT evaluators)

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