TY - JOUR
T1 - Comparison of air quality at different altitudes from multi-platform measurements in Beijing
AU - Ji, Hongzhu
AU - Chen, Siying
AU - Zhang, Yinchao
AU - Chen, He
AU - Guo, Pan
AU - Zhao, Peitao
N1 - Publisher Copyright:
© 2018 Author(s).
PY - 2018/7/25
Y1 - 2018/7/25
N2 - The features of upper-air visibility at altitudes of 0.1, 0.3, and 0.5 km and the two-dimensional haze characteristics in the northwest of downtown Beijing were studied by using a multi-platform analysis during haze episodes between 17 December 2016 and 6 January 2017. Through the multi-platform data analysis in hourly and daily variation, the upper-air visibility increased along with the decrease of PM2.5 mass concentration. And the upper-air visibility on non-haze days was about 3-5 times higher than that on haze days with the ground-based Raman-Mie lidar data between 13 December 2016 and 11 January 2017. The vertical transport of pollutants can be inferred from the delayed variation of upper-air visibility between high altitude and low altitude. In addition, the two-dimensional haze characteristics could be studied by analyzing the correlation between vertical haze parameters (atmospheric boundary layer, haze thickness, and aerosol optical thickness) and horizontal haze parameter (upper-air visibility). The characteristics of multi-parameters have been analyzed and concluded for different haze levels.
AB - The features of upper-air visibility at altitudes of 0.1, 0.3, and 0.5 km and the two-dimensional haze characteristics in the northwest of downtown Beijing were studied by using a multi-platform analysis during haze episodes between 17 December 2016 and 6 January 2017. Through the multi-platform data analysis in hourly and daily variation, the upper-air visibility increased along with the decrease of PM2.5 mass concentration. And the upper-air visibility on non-haze days was about 3-5 times higher than that on haze days with the ground-based Raman-Mie lidar data between 13 December 2016 and 11 January 2017. The vertical transport of pollutants can be inferred from the delayed variation of upper-air visibility between high altitude and low altitude. In addition, the two-dimensional haze characteristics could be studied by analyzing the correlation between vertical haze parameters (atmospheric boundary layer, haze thickness, and aerosol optical thickness) and horizontal haze parameter (upper-air visibility). The characteristics of multi-parameters have been analyzed and concluded for different haze levels.
UR - http://www.scopus.com/inward/record.url?scp=85050683926&partnerID=8YFLogxK
U2 - 10.5194/acp-18-10645-2018
DO - 10.5194/acp-18-10645-2018
M3 - Article
AN - SCOPUS:85050683926
SN - 1680-7316
VL - 18
SP - 10645
EP - 10653
JO - Atmospheric Chemistry and Physics
JF - Atmospheric Chemistry and Physics
IS - 14
ER -