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Monthly QA Report

Quality Assurance

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.