Characteristics and Meteorological Factors of Severe Haze Pollution in China
A severe haze pollution incident caused by unfavorable weather conditions and a northern air mass occurred in eastern, northern, northwestern, and southwestern China from January 15 to January 22, 2018. To comparatively analyze variations in PM2.5 pollution, hourly monitoring data and 24 h meteorolo...
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| Format: | Article |
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Wiley
2021-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2021/6680564 |
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| author | Chao He Song Hong Hang Mu Peiyue Tu Lu Yang Biqin Ke Jiayi Huang |
| author_facet | Chao He Song Hong Hang Mu Peiyue Tu Lu Yang Biqin Ke Jiayi Huang |
| author_sort | Chao He |
| collection | DOAJ |
| description | A severe haze pollution incident caused by unfavorable weather conditions and a northern air mass occurred in eastern, northern, northwestern, and southwestern China from January 15 to January 22, 2018. To comparatively analyze variations in PM2.5 pollution, hourly monitoring data and 24 h meteorological data were collected. Air quality observations revealed large spatiotemporal variation in PM2.5 concentrations in Handan, Zhengzhou, Xi’an, Yuncheng, Chengdu, Xiangyang, and Jinan. The daily mean PM2.5 concentrations ranged from 111.35 to 227.23 μg·m−³, with concentration being highest in Zhengzhou. Hourly mean PM2.5 concentration presented multiple U-shaped curves, with higher values at night and lower values during the day. The ratios of PM2.5 to PM10 were large in target cities and the results of multiscale geographic weighted regression model (MGWR) and Pearson correlation coefficients showed that PM2.5 had a significant positive or negative correlation with PM10, CO, NO2, and SO2. The concentration of PM2.5 was closely related to the combustion of fossil fuels and other organic compounds, indicating the large contribution of secondary aerosols to PM2.5 concentrations. The analysis of meteorological conditions showed that low temperature, low wind speed, and high relative humidity could aggravate the accumulation of regional pollutants in winter. Northwestern trajectory clusters were predominant contributions except in Jinan, and the highest PM2.5 concentrations in target cities were associated with short trajectory clusters in winter. The potential sources calculated by Weight Potential Source Contribution Function (WPSCF) and Weight Concentration-Weighted Trajectory (WCWT) models were similar and the highest values of the WPSCF (>0.5) and the WCWT (>100 μg·m−³) were mainly distributed in densely populated, industrial, arid, and semiarid regions. |
| format | Article |
| id | doaj-art-38cb2ee3cb274625ad237b02e4ade514 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-38cb2ee3cb274625ad237b02e4ade5142025-02-03T01:25:15ZengWileyAdvances in Meteorology1687-93091687-93172021-01-01202110.1155/2021/66805646680564Characteristics and Meteorological Factors of Severe Haze Pollution in ChinaChao He0Song Hong1Hang Mu2Peiyue Tu3Lu Yang4Biqin Ke5Jiayi Huang6School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, ChinaSchool of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, ChinaSchool of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, ChinaFaculty of Resources and Environmental Science, Hubei University, Wuhan 430062, ChinaSchool of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, ChinaSchool of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, ChinaWoodsworth College, University of Toronto, M5S 1A9 Toronto, CanadaA severe haze pollution incident caused by unfavorable weather conditions and a northern air mass occurred in eastern, northern, northwestern, and southwestern China from January 15 to January 22, 2018. To comparatively analyze variations in PM2.5 pollution, hourly monitoring data and 24 h meteorological data were collected. Air quality observations revealed large spatiotemporal variation in PM2.5 concentrations in Handan, Zhengzhou, Xi’an, Yuncheng, Chengdu, Xiangyang, and Jinan. The daily mean PM2.5 concentrations ranged from 111.35 to 227.23 μg·m−³, with concentration being highest in Zhengzhou. Hourly mean PM2.5 concentration presented multiple U-shaped curves, with higher values at night and lower values during the day. The ratios of PM2.5 to PM10 were large in target cities and the results of multiscale geographic weighted regression model (MGWR) and Pearson correlation coefficients showed that PM2.5 had a significant positive or negative correlation with PM10, CO, NO2, and SO2. The concentration of PM2.5 was closely related to the combustion of fossil fuels and other organic compounds, indicating the large contribution of secondary aerosols to PM2.5 concentrations. The analysis of meteorological conditions showed that low temperature, low wind speed, and high relative humidity could aggravate the accumulation of regional pollutants in winter. Northwestern trajectory clusters were predominant contributions except in Jinan, and the highest PM2.5 concentrations in target cities were associated with short trajectory clusters in winter. The potential sources calculated by Weight Potential Source Contribution Function (WPSCF) and Weight Concentration-Weighted Trajectory (WCWT) models were similar and the highest values of the WPSCF (>0.5) and the WCWT (>100 μg·m−³) were mainly distributed in densely populated, industrial, arid, and semiarid regions.http://dx.doi.org/10.1155/2021/6680564 |
| spellingShingle | Chao He Song Hong Hang Mu Peiyue Tu Lu Yang Biqin Ke Jiayi Huang Characteristics and Meteorological Factors of Severe Haze Pollution in China Advances in Meteorology |
| title | Characteristics and Meteorological Factors of Severe Haze Pollution in China |
| title_full | Characteristics and Meteorological Factors of Severe Haze Pollution in China |
| title_fullStr | Characteristics and Meteorological Factors of Severe Haze Pollution in China |
| title_full_unstemmed | Characteristics and Meteorological Factors of Severe Haze Pollution in China |
| title_short | Characteristics and Meteorological Factors of Severe Haze Pollution in China |
| title_sort | characteristics and meteorological factors of severe haze pollution in china |
| url | http://dx.doi.org/10.1155/2021/6680564 |
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