Download
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
TALI 229L Delta Temperature at 25 cm 2016-01-20 21:44:30 Soil moisture suddenly started to increase higher than allowed saturation value. Fractional water currently listed as 1.1. Soil temperature looks fine. Sensor appears to not be heating as well as expected.
WAUR Barometric Pressure at 0.75 m 2016-01-12 18:30:55 Barometer flag sometimes reported on cold nights. Data are fine. Please confirm all wiring connections from barometer, SDM, and datalogger are secure.
CHEY Soil Temperature at 10 cm under Native Vegetation 2015-12-22 17:31:05 10cm and 5cm sod temperature have similar diurnal variation. Please check depth for both sensors and rebury if needed.
CHEY Soil Temperature at 5 cm under Native Vegetation 2015-12-22 17:29:56 5cm and 10cm sod temperature have similar diurnal variation. Please check depth for both sensors and rebury if needed.
NEWK 229L Delta Temperature at 60 cm 2015-12-22 14:25:07 60cm soil moisture final temperature approximately same as starting temperature. Soil temperature data are fine.
TULN Soil Temperature at 10 cm under Bare Soil 2015-12-21 22:19:42 10cm bare soil temperature has more diurnal variation than neighbors. Suspect sensor is too shallow.
CHIC 229L Delta Temperature at 5 cm 2015-11-18 17:47:49 5cm soil moisture sensor has poor response to saturated soil. Please replace sensor.
APAC 229L Delta Temperature at 5 cm 2015-11-18 17:46:02 5cm soil moisture sensor has poor response to saturated soil. Please replace sensor.
ALV2 229L Delta Temperature at 5 cm 2015-11-02 16:53:51 Soil moisture sensor does not moisten as expected following rain events. Please replace sensor.