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GPS Instrumentation Specification and Performance

GPS Instrumentation Specification and Performance. John J. Braun COSMIC Program University Corporation for Atmospheric Research Boulder, Colorado. Outline. GPS Stations Operating for IHOP Network Operation and Data Collection Percentage Homestead Site General Network Statistics

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GPS Instrumentation Specification and Performance

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  1. GPS Instrumentation Specification and Performance John J. Braun COSMIC Program University Corporation for Atmospheric Research Boulder, Colorado

  2. Outline • GPS Stations Operating for IHOP • Network Operation and Data Collection Percentage • Homestead Site • General Network Statistics • Data Products • Precipitable Water Vapor • Slant Water Vapor • Tomography Solutions

  3. NOAA/FSL and DOT Stations OU/ARM/SuomiNet Stations Special Stations for IHOP GPS Stations In IHOP Region 41 Stations Total

  4. Acknowledgements CNRS - CNRM/GAME - France (contact: Joel Van Baelen) NOAA Forecast Systems Laboratory (contact: Seth Gutman) University of Oklahoma (contact: Randy Peppler) ARM Program (contact: James Liljegren) NASA/GSFC (contact: Dave Whiteman)

  5. Homestead (SA14) Data Collection

  6. ARM CF (SG01) Data Collection

  7. French Station (BLAC) Data Collection

  8. GPS Data Products

  9. GPS PW and SW and Descriptions PWV SW • SW is the integrated water vapor along single GPS ray paths • PWV is the average (estimate) of all SW observations in a cone scaled to zenith • Simultaneous observations along 8-12 GPS ray paths • GPS and WVR sensed SW and PWV agree to ~1.5 mm rms

  10. Precipitable Water Vapor

  11. Slant Water Vapor

  12. Example of SW During Storm

  13. International H20 Project Tomography Solution

  14. Conclusions • 41 GPS Stations in IHOP_2002 Region • Homestead station had high percentage of data availability • PW (30 min), SW (2 min), and Tomography Solutions Available • All GPS data are processed. PW data are available at JOSS web site. If someone is interested in SW and/or tomography data, they should contact me directly (braunj@ucar.edu).

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