CDIP Quality Control Tests : Waves

Tests applied are determined by data/processing type, as summarized in the table below. Note that CDIP's time series are, for the most part, unedited. Other than checking for gaps in the data and incorrect times, time series values are unmodified. It is only when the time series are used for spectral and parameter processing that they are submitted to CDIP's full suite of quality control routines.

  • AR - Directional Array of Pressure Sensors
  • DW - Datawell Directional Buoy
  • NB - Non-directional Buoy
  • PR - Single Point Pressure Sensor
  • TIME SERIES VALUES
    TEST: description (click name for more details) AR DW NB PR
    GAP TEST: edit or discard time series with missing values. 
    RECEPTION BYTE STATUS: discard imperfectly received data.   
    MAX WAVE HEIGHT: wave height exceedence test. 
    FLAT EPISODES TEST: test for non-varying values in time series.  
    SPIKE EDIT: replace spikes with average of bracketing points. 
    RANGE TEST (TS): check time series for unreasonable values  
    MEAN SHIFT TEST: check for shift in time series mean. 
    ACCELERATION TEST: check if acceleration exceeds 1/3 g  
    EQUAL PEAKS TEST: check for identically valued successive peaks.  
    MEAN CROSSING TEST: check for too few mean crossings. 
    PERIOD DISTRIBUTION TEST: check for excessive long-period waves. 
    UNCORRECTED ENERGY COMPARISON: compare time series variances.   
    DEPTH COMPARISON: compare time series means.   
    SERIES COMPARISON: check correlation of time series.   
    CORRECTED ENERGY COMPARISON: compare depth-corrected variances.   
    SPECTRAL VALUES
    TEST: description (click name for more details) AR DW NB PR
    INCIDENT WAVE TEST: check that directions are incident to shore.   
    RECEPTION BYTE STATUS: discard imperfectly received data.   
    BAND DIRECTION MAX/MIN: check Dmean for each band.   
    DW CHECK FACTORS: issue warning for bad check factors.   
    PARAMETER VALUES
    TEST: description (click name for more details) AR DW NB PR
    SPIKE TEST: check for unreasonable changes between records.
    RANGE TEST (PM): apply max/min tests to all parameters.
    CONSECUTIVE VALUE TEST: check for non-varying values.
    Dp SPREAD TEST: check if Dp values are excessively spread out.  
    Dp RANDOM TEST: check if Dp values appear random.  
    VISUAL INSPECTION: review daily issues and logs