| Description: | The temperature/humidity sensor has not been calibrated since 2/6/2007. It failed two
6-month field calibration checks during this time, but has passed field calibration checks
after 5/7/2014.
In comparison with a nearby Mesonet site, there is evidence of the sensor relative
humidity reading lower than expected, especially in high humidity/nighttime situations. There is
also evidence of a possible small cold bias in the temperature data. An exit calibration
will characterize severity when the sensor is replaced.
In general, the relative humidity may have been subject to drift during this time. The
manufacturer characterizes sensor drift at <1% / year. |