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| Observation and analysis of visual disturbance phenomenon instrument for sand and dust weather in Beijing in 2023 |
| Yin Jiali1, Chang Chen1, Qiao Xiaoyan1, Dai Jian2, Song Fu3, Zhang Cheng4 |
1. Beijing Meteorological Detection Center, Beijing 100176;
2. Beijing Chaoyang District Meteorological Bureau, Beijing 100016;
3. Beijing Fengtai District Meteorological Bureau, Beijing 100071;
4. Beijing HY Oriental Detection Technology Co., Ltd., Beijing 100176 |
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Abstract The article uses ground meteorological observation data from 20 national meteorological stations in Beijing to comprehensively compare the aerosol mass concentration observation data of three sand and dust weather processes in March 2023.It analyzes the equipment stability of the newly deployed visual disturbance phenomenon instrument, the observation differences with the original atmospheric composition observation equipment, and the data consistency between adjacent stations in geographical locations.The results show that, except for a few station equipments with damaged air pumps or unstable communication, all other station equipments have obtained complete and continuous mass concentration observation data, and the equipment operational stability is good.Comparing the measurment data of equipment in the same process, stations with close geographical locations but with significant differences in altitude or surrounding environment have significantly different peak mass concentrations, while stations with close geographical locations or small differences in altitude have similar extreme values and fluctuations.Comparing the observation data of the original atmospheric composition equipment at the same site with the visual disturbance phenomenon instrument, before the sand and dust transit, the PM10 observation values of the two equipment were close or slightly higher than the original atmospheric composition equipment.During the sand and dust transit, the original atmospheric composition equipment data was significantly higher than the visual disturbance phenomeon instrument data, with the extreme value being about 210 times higher.During the duration of sand and dust and subsequent periods, the original atmospheric composition station data remained at a higher value, with a slower decline.Throughout the passage of sand and dust, the PM2.5 observation values of the original atmospheric composition equipment were all higher than the visual range disorder instrument, with the extreme value being about 110 times higher.
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Received: 11 December 2023
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2024, Vol. 41 
