SPATIAL AND TEMPORAL DISTRIBUTION CHARACTERISTICS OF ATMOSPHERIC POLLUTANTS IN WUHAN FROM 2017 TO 2020

ZHANG Qing; ZHAO Liya; GUO Zhiwei; QI Kai

doi:10.13205/j.hjgc.202302012

Volume 41 Issue 2

Feb. 2023

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ZHANG Qing, ZHAO Liya, GUO Zhiwei, QI Kai. SPATIAL AND TEMPORAL DISTRIBUTION CHARACTERISTICS OF ATMOSPHERIC POLLUTANTS IN WUHAN FROM 2017 TO 2020[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(2): 82-90. doi: 10.13205/j.hjgc.202302012

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ZHANG Qing, ZHAO Liya, GUO Zhiwei, QI Kai. SPATIAL AND TEMPORAL DISTRIBUTION CHARACTERISTICS OF ATMOSPHERIC POLLUTANTS IN WUHAN FROM 2017 TO 2020[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(2): 82-90. doi: 10.13205/j.hjgc.202302012

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SPATIAL AND TEMPORAL DISTRIBUTION CHARACTERISTICS OF ATMOSPHERIC POLLUTANTS IN WUHAN FROM 2017 TO 2020

doi: 10.13205/j.hjgc.202302012

School of Resources and Environmental Science, Hubei University, Wuhan 430062, China

Received Date: 2021-10-31
Available Online: 2023-05-25
Publish Date: 2023-02-01

Abstract

Abstract

An investigation on the spatial and temporal distribution characteristics and correlation analysis with meteorological elements were conducted on the main atmospheric pollutants (PM_2.5, PM₁₀, SO₂, CO, NO₂ and O₃) in Wuhan from 2017 to 2020, to understand the level of atmospheric pollution in each district of Wuhan. The results were as follows:The overall achievement rate of ambient air quality in Wuhan over the past four years was 72.98%. The pollution of PM_2.5, PM₁₀, SO₂, CO and NO₂ was more serious in winter, and less in summer; the pollution of O₃ was more in summer, and less in winter. PM_2.5 and PM₁₀ were the exceeding pollutants among the atmospheric pollutants, but the annual average mass concentrations were on a decreasing trend, while O₃ was the only air pollutant whose annual average mass concentration was on the rise, so particulate matters and ozone pollution should be paid on more attention in the future. PM_2.5, PM₁₀, SO₂, CO and NO₂ were more concentrated in Wuchang District, Caidian District, Qingshan District, Jianghan District, Jiangan District, and O₃ were concentrated in Huangpi District, Xinzhou District and Jiangxia District. PM_2.5, PM₁₀, SO₂, CO and NO₂ were significantly positively correlated with each other, while O₃ and these five atmospheric pollutants were significantly negatively correlated. Mean temperature was significantly negatively correlated with PM_2.5, PM₁₀, SO₂, CO and NO₂, and significantly and strongly positively correlated with O₃. Sunshine duration was significantly negatively correlated with all six pollutants. Mean wind speed was significantly negatively correlated with PM_2.5, PM₁₀, SO₂, CO and NO₂, and significantly positively correlated with O₃. Relative humidity had the least effect on air pollutants and was only weakly correlated with SO₂. The main meteorological elements affecting air pollutants in Wuhan were average temperature and sunshine duration.
- atmospheric pollutants,
- air quality,
- spatial and temporal analysis,
- meteorological factors,
- correlation analysis

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References

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