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The Performance of Minimet Wind and Temperature Chain Drifters in Hurricane Rita

The Performance of Minimet Wind and Temperature Chain Drifters in Hurricane Rita William Scuba and Peter Niiler Scripps Institution of Oceanography La Jolla, California, U.S.A. Buoy’s Deployment Position and Path of Hurricane Rita. System Components.

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The Performance of Minimet Wind and Temperature Chain Drifters in Hurricane Rita

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  1. The Performance of Minimet Wind and Temperature Chain Drifters in Hurricane Rita William Scuba and Peter Niiler Scripps Institution of Oceanography La Jolla, California, U.S.A.

  2. Buoy’s Deployment Position and Path of Hurricane Rita

  3. System Components • Minimet sphere and electronics – Pacific Gyre • Temperature chain components – Clearwater Instruments • Temperature chain construction – Scripps Institution of Oceanography • Parachute and rigging – AERO • Deployment – 53rd “Hurricane Hunters” U.S. Air Force Squadron

  4. Temperature Chain Nodes

  5. Getting the Data Through ARGOS 2005-09-21 19:48:31 6.5 6.7 6.5 6.4 6.4 6.2 5.9 5.1 3.8 2.9 2.4 2005-09-21 20:03:31 0.0 0.0 0.0 0.0 0.0 -0.1 -0.1 -0.2 -0.1 -0.1 0.0 2005-09-21 20:18:31 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 -0.3 -0.1 -0.1 0.0 • 8 Pages used • 1 for SST, atmospheric pressure, wind speed and wind direction • 7 for temperature chain data • 5 hours and 15 minutes of temperature data archived • If measured value is < 2 then 30 is added to temperature value, otherwise, 20 is added to temperature value

  6. Packaging the Instruments

  7. Data from Hurricane Katrina

  8. Buoys at Dobbins AFB

  9. Deployment Planning

  10. Drifter Tracks

  11. Survivability • 2005: 20 of 20 drifters transmitted data through hurricane Rita (Category 5) • All 8 of 8 temperature chains functioned properly • 2004: 35 of 39 drifters transmitted data through hurricane Frances (Category 4) • Only 1 of 8 temperature chains functioned properly • 2003: 8 of 16 drifters transmitted data through hurricane Fabian (Category 4)

  12. Data on the GTS • New GTS templates created • Buoy pressure and SST data where assimilated into the hurricane prediction models in real time • Subsurface temperature not on the GTS right away • Special thank to Mayra, Etienne and Andy for their work on getting the data on the GTS

  13. Subsurface Temperature Profiles

  14. Wind Speed Plot

  15. Summary • Experiment methodology proved successful for obtaining surface and subsurface data in hurricanes • Temperature chain technology tested and proved successful • Wind speed has yet to be examined

  16. The End

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