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| Uncertainty evaluation of ground temperature sensor field calibration results of automatic weather station |
| Huang Xiaojing1,2, Yang Tao1,2, Xia Xue1,2 |
1. Sichuan Meteorological Observation Data Center,Chengdu 610072;
2. Sichuan Key Laboratory of Rainstorm,Drought and Flood in Plateau and Basin,Chengdu 610072 |
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Abstract Based on the theory of uncertainty evaluation and the field investigation of field calibration,this paper analyzes the sources of uncertainty in the field calibration results of ground temperature sensor of automatic weather station,and puts forward the model of uncertainty evaluation and the specific calculation process and method.Finally,an example of uncertainty evaluation is given.The example results show that the expanded uncertainty of -20℃,0℃ and + 30℃ field calibration results are less than one third of the maximum allowable error of the ground temperature sensor.
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Received: 20 January 2021
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2021, Vol. 38 
