Observational Contrast Experiment and Application of Raindrop Spectrum Precipitation Phenomenon Instrument
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Abstract:
The automatic observation of precipitation weather phenomena is an important part of the ground observation automation. In order to eliminate the subjectivity of manual observation and improve the integrity and timeliness of precipitation data, the China Meteorological Administration Meteorological Observation Center selected 18 laser raindrop spectrometers from 6 manufacturers, which participated in the 3month contrast experiment on precipitation weather phenomena meters in Beijing and Changsha. This paper is focusing on the experiment equipment, test data analysis and summary, mainly from the experiment location, principles, standards, methods and other aspects. The average capture rate of the tested equipment is not less than 97% for precipitation intensity of greater than 01 mm/h, and not less than 84% for precipitation intensity of less than 01 mm/h. The consistent rate of the tested equipment went through a process of increasing firstly and then decreasing with the increase of precipitation. The test results of the tested equipment are relatively ideal for hail phenomenon, and the average false alarm rate of all the tested equipment is less than 05% for hail phenomenon, while the observations of drizzle and unknown phenomena still need improvement. The misstatement rate is negatively correlated with the precipitation intensity. The smaller the precipitation intensity is, the higher the misstatements rate. The results provide hopefully a reference for the relevant technicians.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.