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HARLIE Winds at IHOP - 2002

This presentation focuses on the calibration and validation of wind Lidar observations conducted by HARLIE during the IHOP project in 2002. The objectives are to support IHOP goals through correlated observations and extended operations for HARLIE. The data surveys cover altitudes ranging from 500m to 15km, highlighting good, decent, and bad data comparisons, as well as multiple cloud layer comparisons. The conclusion showcases the capabilities of observing wind shear and highlights the functionality of the HARLIE Auto in different conditions. Unresolved algorithm problems and the successful contrail detection algorithm implementation are also discussed, with plans for further automation.

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HARLIE Winds at IHOP - 2002

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  1. HARLIE Winds at IHOP - 2002 Curtis Earl, Asif Ghani, David Huish, Halee Hunter, and James Cutts Space Dynamics Laboratory Utah State University Logan, UT 84341 (435) 797-4679 james.cutts@sdl.usu.edu Presentation for Wind Lidar Working Group Bar Harbor, ME June 23-25, 2003 *Research Support: IPO, NASA, and SDL

  2. OBJECTIVES • Calibrate/Validate Wind LIDAR Observations • Extended Operations for HARLIE (goal is 24/7) • Support IHOP Goals with Correlated Observations

  3. Data Survey • Dates • HARLIE was run from May 18-June 23, 2002 • Down times only during 30% of this period • Intended Overlap • The greater number of instruments running in parallel the more efficient the comparisons between instruments • Altitudes of wind observation • Observed altitudes ranged from 500 m to 15 km

  4. Good Data Comparisons

  5. Decent Data Comparisons

  6. Bad Data Comparisons

  7. Multiple Cloud Layer Comparisons

  8. A HARLIE Wave Reading

  9. Conclusion • Sonde/HARLIE Manual • Data recovered by both the HARLIE Manual and the sonde balloon are comparable • Demonstrated capabilities to observe wind shear as shown from multi-layer cloud segments • HARLIE Auto problem • The HARLIE Auto gives comparable data when larger wind velocities are encountered and at higher altitudes • The majority of the time for heights below 5 km the wind direction error is close to 180 degrees • Unresolved problems in the algorithm require further work • Contrail Detection Algorithm working well • Automation to follow

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