Description: | The temperature/humidity sensor has not been calibrated since 9/16/2011. The temperature
reading failed three 6-month field calibration checks during this time, but has passed all
field calibration checks after 5/5/2014.
In comparison with a nearby Mesonet site, there is evidence of the sensor relative
humidity reading lower than expected, on average. During the day, the sensor relative humidity
reads lower on average when compared to the Mesonet sensor. At night, the sensor relative
humidity averages higher than the Mesonet sensor. 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. |