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|
|BIXB||229L Delta Temperature at 25 cm||2022-05-09 16:14:00||25cm sensor not heating. Final temp same as starting temp.|
|ERIC||229L Delta Temperature at 25 cm||2022-05-09 13:38:56||25cm soil temperature reports errantly high values or -7999. Replace sensor.|
|BURN||Rain since midnight UTC at 0.6m||2022-05-04 15:02:49||Please replace gauge cables to be consistent with secondary gauge.|
|HOOK||Rain since midnight UTC at 0.6m||2022-04-28 17:15:38||Primary rain gauge returned two consecutive post-cleaning -3 drip test results. Please replace primary gauge.|
|SHAW||229L Delta Temperature at 60 cm||2022-04-21 22:00:30||Tech reports no resistance between heater leads following current_ex rotation, causing errant soil moisture values. Please replace sensor.|
|SHAW||229L Delta Temperature at 10cm under Sod||2022-04-21 21:57:32||Tech reports no resistance between heater leads following current_ex rotation, causing errant soil moisture values. Please replace sensor.|
|STUA||229L Delta Temperature at 25 cm||2022-04-18 21:04:21||Failed heater - starting and final temperature are the same. Soil temperature unaffected. Please replace sensor.|
|EUFA||Barometric Pressure at 0.75 m||2022-02-03 21:56:08||Please replace external barometer tubing.|
|MANG||Soil Temperature at 25 cm under Native Vegetation||2022-02-03 21:55:56||25cm sensor reports -7999 for starting, final, and average soil temperature.|