Aerosol optical characteristics and influencing factors in the southern suburb of Xi’an

Fang Lu; Qiwei Li; Zhifang Miao; Xiaobin Wang; Chunbo Liu; Xiang'e Han

doi:10.1117/12.2603170

31 August 2021 Aerosol optical characteristics and influencing factors in the southern suburb of Xi’an

Fang Lu, Qiwei Li, Zhifang Miao, Xiaobin Wang, Chunbo Liu, Xiang'e Han

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 119072U (2021) https://doi.org/10.1117/12.2603170
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

The characteristics of aerosol optical depth (AOD), Ångström exponent α, water vapor content and turbidity coefficient were analyzed by using the latest observation data of CE318 Sun-photometer in the southern suburb of Xi’an between December 2019 and November 2020. In addition, the frequency distribution and aerosol types were studied, and the influencing factors were analyzed briefly. The annual mean value of AOD in the southern suburb of Xi'an was 0.529±0.358, and the distribution of frequency was unimodal. The values of AOD in winter and spring were higher than that in summer and autumn. The annual mean value of α was 0.894±0.373, and the distribution of frequency was multipeak distribution. The number of the α value lower than 0.5 in spring was significantly higher than that in the other three seasons, which was caused by the influence of coarse mode particles, while the other seasons were affected both by coarse and fine mode particles. It can be seen that different types of aerosols are mixed in Xi’an. The influence of Desert Dust Aerosols in spring is greater than that in other seasons. Biomass Burning/Urban Industry Aerosols (BB/UI) are the main types in autumn and winter, and all types of aerosols are relatively balanced in summer.

Citation Download Citation

Fang Lu, Qiwei Li, Zhifang Miao, Xiaobin Wang, Chunbo Liu, and Xiang'e Han "Aerosol optical characteristics and influencing factors in the southern suburb of Xi’an", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 119072U (31 August 2021); https://doi.org/10.1117/12.2603170

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