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| Uncertainty analysis of field calibration results for meteorological new evaporation |
| Zheng Liang1,2, Huang Xiaojing1, Yang Tao1, Li Xiaohong1 |
1. Sichuan Provincial Meteorological Observation Data Centre,Chengdu 610072;
2. Heavy Rain and Drought-Flood Disaster in Plateau and Basin Key Laboratory of Sichuan Province,Chengdu 610072 |
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Abstract The article analyzes the uncertainty of on-site calibration results of evaporation sensors based on a new meteorological evaporation measurement system.According to the requirements of New Evaporation Filed Calibration Method for Automatic Meteorological Station and JJF1059.1-2012 Evaluation and Expression of Uncertaintv in Measurement,10 repeated tests were conducted on the evaporation calibration points,and the combined sample standard deviation was evaluated for type A uncertainty.Analyze the sources of type B uncertainty and conduct an assessment of type B uncertainty.Finally,the two types of uncertainties are combined to obtain the extended uncertainty.The uncertainty analysis of the calibration results of the new evaporative sensor has good reference value for its credibility evaluation.
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Received: 15 November 2023
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2024, Vol. 41 
