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
KIN2 229L Delta Temperature at 10cm under Sod 2022-11-28 21:54:12 Starting and final temperature the same, indicating a failed heater. Soil temperature fine. Replace sensor.
CLOU Relative Humidity at 1.5 m 2022-11-16 16:03:20 Relative humidity sometimes reaches 116 percent. Replace sensor unless obvious problem identified.
IDAB Rain since midnight UTC at 0.6m 2022-11-05 00:44:27 Primary rain gauge stopped reporting tips radar showed tornadic circulation near site and site measured 108 mph wind gust. Suspect top has been knocked off and damaged.
HECT Rain since midnight UTC at 0.6m 2022-10-26 13:43:12 Primary rain gauge slowly records a few tips after the onset of rain and significantly under reports precip amount. Gauge appears to be clogged.
SHAW 229L Delta Temperature at 10cm under Bare Soils 2022-10-21 16:42:15 Most recent veggie pass pics show large depressions in the soil on the bare plot immediately around the sensor. Could be due to wildlife digging on the plot. Please fill in and level the bare plot. Data do not appear affected -will update ticket priority if this status changes.
WEB3 229L Delta Temperature at 10cm under Bare Soils 2022-09-21 16:52:06 Recent site photos show extremely tall vegetation on the east side of the site area around the bare plot and aux box solar panel. Fully remove vegetation from the bare plot, as well as all tall vegetation within the site fence.