短时强降水对翻斗雨量传感器测量准确性的影响研究

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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.

Key words： tipping bucket rainfall sensor short-term heavy precipitation measurement error repeatability uncertainty overflow phenomenon

Received: 28 March 2024

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P414.9

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	Articles by authors
	Qiu Shi
	Ding Hongying
	Luo Chang
	Zheng Yuxin
	Bai Yingce
	Ren Yan

Cite this article:

Qiu Shi,Ding Hongying,Luo Chang等. Study on the influence of shortterm heavy precipitation on the measurement accuracy of tipping bucket rainfall sensors[J]. Meteorological Hydrological and Marine Instrument, 2025, 42(1): 6-10.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2025/V42/I1/6

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