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Remote Currents: HF Radar QA/QC and Standards

Remote Currents: HF Radar QA/QC and Standards. Jack Harlan National Ocean Service Center for Operational Oceanographic Products and Services. QARTOD-3 2-4 November 2005. NOAA IOOS >>> HFR Network. National HFR Data Server * Developing QA/QC Methods * Developing Algorithmic Standards *

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Remote Currents: HF Radar QA/QC and Standards

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  1. Remote Currents: HF RadarQA/QC and Standards Jack Harlan National Ocean Service Center for Operational Oceanographic Products and Services QARTOD-3 2-4 November 2005

  2. NOAA IOOS >>> HFR Network • National HFR Data Server * • Developing QA/QC Methods * • Developing Algorithmic Standards * • Velocity Vector Products • Tidal Velocity Products • Particle Trajectory Products * NOS Partnership with NWS/National Data Buoy Center

  3. FY05-06 IOOS QA/QC and Standards • Level 1 Errors: Influence radial velocity • Spectral frequency estimation algorithms e.g. MUSIC • SNR • Geophysical contribution e.g. spatial variability • Level 2 Errors: Influence total velocity • E.g. Geometry of Sites  Algorithmic Standards

  4. FY05-06 IOOS QA/QC and Standards • Assembled Team of Experienced HFR Researchers • Partitioned the Effort • NOS Increased Emphasis on HFR QA/QC

  5. HF Radar: Level 1 Errors • Spectral Frequency Estimation <-> DOA • Codar SeaSonde uses MUSIC • NOAA Project • Effect of SNR • Averaged Spectra • Empirical and Simulation-based

  6. Level 2 Error Analysis • Total Vector Formation • two-radial-only estimates (GDOP) • unweighted least-squares (LS) estimates • level-1 error-weighted LS estimates • single-site solutions • distance-weighted LS estimates • averaging radius-dependent LS estimates

  7. Approach to QA/QC & Metadata • Collaborate with Academic HFR Users • Fund New Studies to Determine Uncertainties and Best Methods • Learn from QARTOD & MMI Workshops and Implement those Decisions

  8. Future Work • Continue QA/QC for HFR-Derived Currents • More oceanographic regimes • More HFR types e.g. Long-range • QA/QC for HFR-Derived Wave Heights • Product Development • Trajectory-based • Assimilation into circulation models • Fusion of HFR and satellite altimetry • Level 3 error analysis

  9. NOAA HF Radar Jack Harlan National Ocean Service Jack.Harlan@noaa.gov

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