Study on the temporal and spatial distribution of atmospheric SO2 and NO2 in Huainan observed by Lidar

Linlin Liu; Jie Yang; Jian Huang; Ke'e Yuan; Kaixin Yin; Shunxing Hu

doi:10.1117/12.2508250

7 November 2018 Study on the temporal and spatial distribution of atmospheric SO₂ and NO₂ in Huainan observed by Lidar

Linlin Liu, Jie Yang, Jian Huang, Ke'e Yuan, Kaixin Yin, Shunxing Hu

Proceedings Volume 10832, Fifth Conference on Frontiers in Optical Imaging Technology and Applications; 1083212 (2018) https://doi.org/10.1117/12.2508250
Event: Fifth Conference on Frontiers in Optical Imaging Technology and Applications, 2018, Changchun, China

Abstract

In order to initially explore the different temporal and spatial distribution characteristics of sulfur dioxide (SO₂) and nitrogen dioxide (NO₂) concentrations in Huainan, the gas concentration detections were carried out at Huainan Academy of Atmospheric Sciences by the differential absorption laser radar system of Anhui Institute of Optics and Fine Mechanics. According to the detected distribution profiles of atmospheric SO₂ and NO₂ concentrations in part of the months from July 2016 to June 2017, in this paper, the typical examples are selected to analyze the distribution characteristics of SO₂ and NO₂ from three aspects: diurnal variations of horizontal concentration, vertical concentration changes and monthly variations of horizontal concentration. According to the SO₂ and NO₂ concentration distribution profiles in the selected examples, the following conclusions can be drawn:(1) The concentrations of SO₂ and NO₂ at night are greater than that of SO₂ and NO₂ in the afternoon on the same day;(2) The vertical concentrations of SO₂ and NO₂ decrease with the increasing height;(3) The monthly variations of SO₂ and NO₂ horizontal concentration are the highest in the winter months, and the lowest in the summer months, followed by the spring and autumn months. The changes in SO₂ and NO₂ concentrations are the result of a combination of population activities and changes in meteorological conditions.

Citation Download Citation

Linlin Liu, Jie Yang, Jian Huang, Ke'e Yuan, Kaixin Yin, and Shunxing Hu "Study on the temporal and spatial distribution of atmospheric SO₂ and NO₂ in Huainan observed by Lidar", Proc. SPIE 10832, Fifth Conference on Frontiers in Optical Imaging Technology and Applications, 1083212 (7 November 2018); https://doi.org/10.1117/12.2508250

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KEYWORDS

Gases

Absorption

Diffusion

LIDAR

Nitrogen dioxide

Atmospheric optics

Meteorology

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