CHARACTERISTICS ANALYSIS OF PM<sub>2.5</sub> AND O<sub>3</sub> POLLUTION IN SHENYANG CITY

WEI Xiangnan; MA Yunfeng; BAO Huiyu; ZHAO Huijie; SUN Xuebin; WANG Shuai; HOU Le

doi:10.13205/j.hjgc.202410010

Volume 42 Issue 10

Oct. 2024

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WEI Xiangnan, MA Yunfeng, BAO Huiyu, ZHAO Huijie, SUN Xuebin, WANG Shuai, HOU Le. CHARACTERISTICS ANALYSIS OF PM2.5 AND O3 POLLUTION IN SHENYANG CITY[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(10): 73-82. doi: 10.13205/j.hjgc.202410010

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WEI Xiangnan, MA Yunfeng, BAO Huiyu, ZHAO Huijie, SUN Xuebin, WANG Shuai, HOU Le. CHARACTERISTICS ANALYSIS OF PM_2.5 AND O₃ POLLUTION IN SHENYANG CITY[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(10): 73-82. doi: 10.13205/j.hjgc.202410010

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CHARACTERISTICS ANALYSIS OF PM_2.5 AND O₃ POLLUTION IN SHENYANG CITY

doi: 10.13205/j.hjgc.202410010

1. School of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, China;
2. Shenyang Ecological Environment Monitoring Center, Shenyang 110165, China

Received Date: 2023-08-11
Available Online: 2024-11-30

Abstract

Abstract

To analyze the pollution characteristics of PM_2.5 and O₃, the meteorological environment and diffusion of the two pollution processes were simulated and analyzed on the mesoscale region, by using the pollutant data of the national control monitoring stations in Shenyang during the COVID-19 epidemic, and combined with WRF-Chem model. HYSPLIT software was used to analyze the transmission channel, potential source area, and concentration weight of the pollution process. The results showed that PM_2.5 concentration had been declining during the three years of the epidemic, and O₃ concentration was at an extremely low point in 2021. PM_2.5 pollution and O₃ pollution fluctuates with seasons. PM_2.5 pollution shows obvious seasonal characteristics, more frequent in autumn and winter, and is greatly affected by adverse weather conditions such as temperature inversion, high humidity, high atmospheric stability, and low wind speed. O₃ pollution is significantly affected by high temperatures. In January, the external transport of pollutants in Shenyang mainly comes from the north, while the external transport of O₃ pollution in spring and summer is mainly affected by the southern Liaoning Province and the Yellow Sea region. The O₃ concentration is obviously higher in spring and summer, and lower in autumn and winter, and higher at noon than at night, which is affected by warming and high temperature. High-intensity solar radiation, high-temperature weather, and static weather can induce ozone pollution. Reducing anthropogenic emissions during the epidemic effectively reduces PM_2.5 pollution, but has no significant impact on O₃ pollution.
- PM_2.5,
- O₃,
- WRF-Chem,
- HYSPLIT,
- pollution characteristics

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References(38)

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