8.6.4 Schedule and Reporting
Data
should be retrieved on a daily basis and reviewed for reasonableness to
ensure that the instrument is operating properly. Level 1 data validation
should be performed as frequently as possible (e.g., bi-weekly or monthly).
At a minimum, validation should be done weekly for the first month after the
instrument is installed, so that any potential problems can be identified
and quickly resolved to avoid significant data losses.
It
is important to maintain detailed, accurate records of changes to the data
and the data quality control codes. These records will save time and effort
if questions arise about specific data at a later date. Reports should
include the following information:
- Who
performed the quality control validation, type of data validated, and
when the validation was completed.
- Any
adjustments, deletions, or modifications, with a justification or reason
for the change.
- Identification
of data points that were flagged as suspect or invalid, and the reason
why they were flagged.
- Systematic
problems that affected the data.
8. QUALITY ASSURANCE AND QUALITY CONTROL
8.1 Instrument Procurement
8.1.1 Wind Speed
8.1.2 Wind Direction
8.1.3 Temperature and Temperature Difference
8.1.4 Dew Point Temperature
8.1.5 Precipitation
8.1.6 Pressure
8.1.7 Radiation
8.2 Installation and Acceptance Testing
8.2.1 Wind Speed
8.2.2 Wind Direction
8.2.3 Temperature and Temperature Difference
8.2.4 Dew Point Temperature
8.2.5 Precipitation
8.2.6 Pressure
8.2.7 Radiation
8.3 Routine Calibrations
8.3.1 Sensor Check
8.3.2 Signal Conditioner and Recorder Check
8.3.3 Calibration Data Logs
8.3.4 Calibration Report
8.3.5 Calibration Schedule/Frequency
8.3.6 Data Correction Based on Calibration Results
8.4 Audits
8.4.1 Audit Schedule and Frequency
8.4.2 Audit Procedure
8.4.3 Corrective Action and Reporting
8.5 Routine and Preventive Maintenance
8.5.1 Standard Operating Procedures
8.5.2 Preventive Maintenance
8.6 Data Validation and Reporting
8.6.1 Preparatory Steps
8.6.2 Levels of Validation
8.6.3 Validation Procedures
8.6.4 Schedule and Reporting
8.7 Recommendations
