Diurnal Signal Noise QA

• Summary of Diurnal Signal Noise QC
  • What is Normal Signal Noise?
    • Normal Diurnal Pattern
  • What is Extreme Diurnal Pattern?
  • How Big an Impact Does This Have?
    • Removing Precip from Fluctuations
      • UPLO SH
      • VARA SA
    • Prorating During Fluctuations
      • VARA
      • UPLO
  • Quality Checks/rules
    • Flag precip during tank flux
    • Prorate precip during tank flux
    • Known Limitations
      • Precip < Tank Increase
      • Ignoring Small Daily Totals
      • Fluctuations Without Overaccumulation
• False Precip from Diurnal Tank Signal
  • Normal Diurnal Pattern (<1mm)
  • Diurnal Pattern > 1mm
    • Negative Swing
    • Positive Swing
    • State Switch
  • Possible Filters
    • PyTimeTK Signal Decomposition
      • Tank Anomalies
      • Precip Anomalies
    • StatsModels Signal Decomposition
      • Decomposing Tank Height
      • Decomposing ACC
      • Selecting PPT from Seasonal Tank Height
    • Filter Midnight to Midnight
      • Prorating
      • Good 0 PPT Filter
    • Wavelet Transform
      • Picking a Waveform
      • Continuous Transformation
      • Discrete Transformation
    • Trend Fitting
      • Median Filter
  • Integrate Trend with Midnight Filter
• Testing Across the Data
  • Refactoring
    • Pro-rating data
  • UPLO
  • CENT
• Checking Diurnal Flux at VARA
  • Site Overview
  • Flag Precip During Tank Flux
  • Impact of Fluctuation Flagging
  • Additional WY’s
  • Summary