TY  - SER
AU  - Frühmann,R.
TI  - Relative calibration process for long term thermal stratification measurements in the lower atmospheric boundary layer 
KW  - TEMPERATURE SENSORS
KW  - MEASURING VERTICAL THERMAL GRADIENTS
KW  - METEOROLOGICAL MASTS
N1  - The work in this paper describes a method of calibrating temperature sensors for measuring vertical thermal gradients on meteorological masts. The method uses current state-of-the-art measurement systems to enable digitisation of the sensor signal close to the sensor, thereby avoiding signal distortion over long cable lengths. The sensors are calibrated together with the digitisatiuon module in a thermal chamber, using one sensor as a reference. A linear correlation between the sensors is obtained, allowing the reading from each sensor/module pair to be related to all other sensors to within ± 0.05°C. Results from 4 months of deployment on the FINO1 offshore measurement platform at 5 heights from 30 to 100 m are presented as proof of concept.
ER  -