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| Version | User | Scope of changes |
|---|---|---|
| Nov 20 2009, 7:44 AM EST | sdrevik | 215 words added |
| Nov 20 2009, 7:35 AM EST | sdrevik |
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Key: Additions Deletions
This page is designed to offer a list of ideas of ways to use the Automatic Data Validation Processor (ADVP) for real-time data quality assurance.
Please feel free to add your own ideas and experiences!
1. Basic Ozone Rule: If OZONE > (fixed value) and AMBTEMP < (fixed value), then flag as suspect, set data grade
2. Stuck WDR Sensor: If Variance of WDR/VWDR < 2%, then flag as suspect, send email alarm
3. Cross-Site Comparison: If SITEA-(any parameter) Differs > X% from SITEB-(parameter), flag as suspect, set data grade
4. BAM Tape Failure: If PM25LC > 980 AND PM25PC < 990, then flag as invalid, (set null code?), send email alarm
5. Simple Historical Comparison: If (any parameter) Differs > X% from previous N-year average, flag as suspect, set data grade
6. Fireworks: Set a JULDAY channel in the logger (math pack, equation is "JULDAY()="), and set rule If PM25LC > 100 and JULDAY >185 and JULDAY < 188 (or JULDAY = 186 and adjust for leap years) then set null code for fireworks. Other dates may be inserted for local festivals.
Please feel free to add your own ideas and experiences!
1. Basic Ozone Rule: If OZONE > (fixed value) and AMBTEMP < (fixed value), then flag as suspect, set data grade
- Alternate: solar radiation comparison more accurate than AMBTEMP, use SOLARRAD if you have it available.
2. Stuck WDR Sensor: If Variance of WDR/VWDR < 2%, then flag as suspect, send email alarm
3. Cross-Site Comparison: If SITEA-(any parameter) Differs > X% from SITEB-(parameter), flag as suspect, set data grade
4. BAM Tape Failure: If PM25LC > 980 AND PM25PC < 990, then flag as invalid, (set null code?), send email alarm
5. Simple Historical Comparison: If (any parameter) Differs > X% from previous N-year average, flag as suspect, set data grade
- % tolerance may be vastly different for different parameters, e.g., ozone and particulate may have low tolerances.
6. Fireworks: Set a JULDAY channel in the logger (math pack, equation is "JULDAY()="), and set rule If PM25LC > 100 and JULDAY >185 and JULDAY < 188 (or JULDAY = 186 and adjust for leap years) then set null code for fireworks. Other dates may be inserted for local festivals.
