The Oklahoma Mesonet’s quality-assurance (QA) 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 are calibrated to validate or improve upon factory calibrations.
On an annual basis, the accuracy of several types of sensors in the field is verified through comparison to calibrated reference sensors housed in a portable system.
To make a first pass through the 640,000+ observations that are received at the Mesonet each day, automated QA software includes numerous algorithms to evaluate the data received from remote stations.
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 to the left to download a PDF version of a Monthly Report). 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).
Current Trouble Tickets in the Oklahoma Mesonet
(For questions regarding these tickets, contact )
|Station||Variable||Date Reported||Problem Description|
|EUFA||Rain since midnight UTC at 0.6m||2021-06-07 19:11:41||Please replace primary gauge cable.|
|BRIS||229L Delta Temperature at 10cm under Bare Soils||2021-06-07 16:20:54||Suspect failed heater. Difference between starting and final temperatures is negligible. Soil temp unaffected. Please replace sensor.|
|CHER||229L Delta Temperature at 10cm under Sod||2021-06-01 21:02:43||Starting and final temperature reporting errantly high values. Both soil moisture and temperature affected. Sensor installed May 2018, please check wires and cabling before replacing.|
|PUTN||229L Delta Temperature at 10cm under Sod||2021-05-17 21:27:09||Soil temperature reports errant values for several observations then returns to normal. Check sensor wiring from ports to sensor. If nothing found, please replace.|
|PORT||229L Delta Temperature at 25 cm||2021-05-03 16:50:26||Suspect failed heater. Difference between starting and final temperature is negligible. Soil temperature fine. Please check sensor wiring for potential problems before replacing.|
|NRMN||Air Temperature at 9 m||2021-04-29 22:13:43||TA9M shelter damaged by hail.|
|ERIC||229L Delta Temperature at 10cm under Sod||2021-04-19 21:07:51||Both starting and final temperature report -7999 or otherwise errant values. Both soil moisture and temperature affected. Sensor just 1.5 years old, please check all wiring and ports for problems before replacing sensor.|