Quality Assurance

Data from the Grazinglands Research Laboratory micronets are quality assured by the Oklahoma Mesonet. The Oklahoma Mesonet's quality-assurance (QA) system consists of four principal components:
1) laboratory calibration,
2) on-site intercomparison,
3) automated QA, and
4) manual QA.

In the instrument laboratory, all sensors (except the soil moisture sensors) are calibrated to validate or improve upon factory calibrations.

To make a first pass through the observations that are received from the micronets each day, automated QA software evaluates the data in real time.

Finally, the Mesonet’s QA meteorologists employ numerous manual techniques to complement automated QA including analysis of monthly statistics to detect sensor drift or bias (click on a month and year above to download a PDF version of a Monthly Report). For another example of manual QA techniques, download the Summary of Obstructions to Pyranometers. In addition to detecting problematic sensors, the QA meteorologists trace the true start time of each problem so that appropriate data can be manually flagged as erroneous. The QA meteorologists are responsible for communicating problems to, and coordinating with, appropriate field technicians to ensure proper resolution (see a list of the current outstanding tickets below).

Station Variable Date Reported Problem Description
F104 RAIN 13-Nov-2017 08:49 Rain gauge only recorded 30 out of 35 tips during drip test.
F215 VW25 16-Oct-2017 10:44 25cm soil moisture frequently reports values near 0 for voltages 1-3. Soil temperature measurement fine.