Study on the influence of shortterm heavy precipitation on the measurement accuracy of tipping bucket rainfall sensors
Qiu Shi1,2,3, Ding Hongying3, Luo Chang4, Zheng Yuxin3, Bai Yingce3, Ren Yan1,2
1. Shandong Key Laboratory of Meteorological Disaster Prevention and Mitigation, Jinan 250031; 2. Shandong Meteorological Engineering and Technology Center, Jinan 250031; 3. Meteorological Observation Center of China Meteorological Administration, Beijing 100081; 4. Zhejiang Atmospheric Sounding Technical Support Center, Hangzhou 310018
Abstract：In order to evaluate the accuracy of the measurement results of liquid precipitation observation instruments under extreme conditions,the article conducted 1-4 mm/min,10 mm,and 1-5 mm/min,30 mm precipitatition tests on two types of tipping bucket rainfall sensors,automatic stations and intelligent stations,with precipitation rates of.Two rainfall calibration instruments were used to simultaneously inject water to achieve maximum rainfall intensity experiments of 6-8 mm/min and 60 mm for tipping bucket rainfall sensors.The experimental results show that the simulated extreme precipitation intensity and duration exceed the measurement limit of the tipping bucket rainfall sensor,causing the sensor collection funnel to overflow.At the 5 mm/min test point,the measurement error of the two types of sensors does not exceed ±4% of the standard value,which is within a reasonable range.The measurement results at the 6-7 mm/min test point are too small and exceed the reasonable range.At the 8 mm/min test point,the conformity evaluation results of some of the measured sensor readings were unqualified or pending,and the corresponding observation data was not available.Further analyze the maximum water accumulation and maximum outflow velocity of the collection funnel,propose an estimation method for the limit time of short-term heavy rainfall measurement using a tipping bucket rainfall sensor,and provide the estimated limit measurement time of the sensor corresponding to extremely heavy rainfall.
邱实, 丁红英, 罗昶, 郑雨欣, 白赢策, 任燕. 短时强降水对翻斗雨量传感器测量准确性的影响研究[J]. 气象水文海洋仪器, 2025, 42(1): 6-10.
Qiu Shi, Ding Hongying, Luo Chang, Zheng Yuxin, Bai Yingce, Ren Yan. Study on the influence of shortterm heavy precipitation on the measurement accuracy of tipping bucket rainfall sensors. Meteorological Hydrological and Marine Instrument, 2025, 42(1): 6-10.
2025, Vol. 42 
