Five-year Record of Black Carbon Concentrations in Urban Wanzhou, Sichuan Basin, China
Abstract The atmospheric fine particle black carbon (BC) was measured from June 2013 till February 2018 in Wanzhou District, the second largest metropolitan area in Chongqing Municipality, China, which is located in the eastern Sichuan Basin. The average daily concentration ranged from 0.5 to 10.4 µ...
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| Format: | Article |
| Language: | English |
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Springer
2020-04-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.2019.10.0516 |
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| author | Yimin Huang Liuyi Zhang Yang Qiu Yang Chen Guangming Shi Tingzhen Li Lei Zhang Fumo Yang |
| author_facet | Yimin Huang Liuyi Zhang Yang Qiu Yang Chen Guangming Shi Tingzhen Li Lei Zhang Fumo Yang |
| author_sort | Yimin Huang |
| collection | DOAJ |
| description | Abstract The atmospheric fine particle black carbon (BC) was measured from June 2013 till February 2018 in Wanzhou District, the second largest metropolitan area in Chongqing Municipality, China, which is located in the eastern Sichuan Basin. The average daily concentration ranged from 0.5 to 10.4 µg m−3, with a mean of 4.4 ± 2.2 µg m−3, and the annual mean displayed a significantly decreasing trend, from 5.3 µg m−3 in 2013 to 3.7 µg m−3 in 2017. The frequency distribution of the average daily concentrations during the years 2014–2017 skewed toward lower values (compared to the rest of the study period), with over 60% falling between 1 and 5 µg m−3. The BC exhibited a seasonal pattern, with the highest concentrations being reported during winter, followed by spring and fall, and the lowest ones during summer, as well as a double-peaked diel variability all year round, with a morning peak occurring between 07:00 and 09:00 and an evening peak between 19:00 and 21:00. Furthermore, the concentration was negatively correlated with the planetary boundary layer (PBL) height and influenced by the strong scavenging effect of precipitation. An inverse relationship between the concentration and the wind speed was observed when the latter was below 2.0 m s−1. The wind direction also affected the concentration, with easterly and southeasterly winds accompanying higher levels of BC regardless of the season. |
| format | Article |
| id | doaj-art-b5987a9aa19446a0b5d931d75602e1c4 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-04-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-b5987a9aa19446a0b5d931d75602e1c42025-02-09T12:19:00ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-04-012061282129310.4209/aaqr.2019.10.0516Five-year Record of Black Carbon Concentrations in Urban Wanzhou, Sichuan Basin, ChinaYimin Huang0Liuyi Zhang1Yang Qiu2Yang Chen3Guangming Shi4Tingzhen Li5Lei Zhang6Fumo Yang7Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges UniversityKey Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges UniversityNational Engineering Research Center for Flue Gas Desulfurization, Department of Environmental Science and Engineering, Sichuan UniversityChongqing Institute of Green and Intelligent Technology, Chinese Academy of SciencesNational Engineering Research Center for Flue Gas Desulfurization, Department of Environmental Science and Engineering, Sichuan UniversityKey Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges UniversityKey Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges UniversityKey Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges UniversityAbstract The atmospheric fine particle black carbon (BC) was measured from June 2013 till February 2018 in Wanzhou District, the second largest metropolitan area in Chongqing Municipality, China, which is located in the eastern Sichuan Basin. The average daily concentration ranged from 0.5 to 10.4 µg m−3, with a mean of 4.4 ± 2.2 µg m−3, and the annual mean displayed a significantly decreasing trend, from 5.3 µg m−3 in 2013 to 3.7 µg m−3 in 2017. The frequency distribution of the average daily concentrations during the years 2014–2017 skewed toward lower values (compared to the rest of the study period), with over 60% falling between 1 and 5 µg m−3. The BC exhibited a seasonal pattern, with the highest concentrations being reported during winter, followed by spring and fall, and the lowest ones during summer, as well as a double-peaked diel variability all year round, with a morning peak occurring between 07:00 and 09:00 and an evening peak between 19:00 and 21:00. Furthermore, the concentration was negatively correlated with the planetary boundary layer (PBL) height and influenced by the strong scavenging effect of precipitation. An inverse relationship between the concentration and the wind speed was observed when the latter was below 2.0 m s−1. The wind direction also affected the concentration, with easterly and southeasterly winds accompanying higher levels of BC regardless of the season.https://doi.org/10.4209/aaqr.2019.10.0516Black carbonSeasonal variationDiel variationMeteorological parameters |
| spellingShingle | Yimin Huang Liuyi Zhang Yang Qiu Yang Chen Guangming Shi Tingzhen Li Lei Zhang Fumo Yang Five-year Record of Black Carbon Concentrations in Urban Wanzhou, Sichuan Basin, China Aerosol and Air Quality Research Black carbon Seasonal variation Diel variation Meteorological parameters |
| title | Five-year Record of Black Carbon Concentrations in Urban Wanzhou, Sichuan Basin, China |
| title_full | Five-year Record of Black Carbon Concentrations in Urban Wanzhou, Sichuan Basin, China |
| title_fullStr | Five-year Record of Black Carbon Concentrations in Urban Wanzhou, Sichuan Basin, China |
| title_full_unstemmed | Five-year Record of Black Carbon Concentrations in Urban Wanzhou, Sichuan Basin, China |
| title_short | Five-year Record of Black Carbon Concentrations in Urban Wanzhou, Sichuan Basin, China |
| title_sort | five year record of black carbon concentrations in urban wanzhou sichuan basin china |
| topic | Black carbon Seasonal variation Diel variation Meteorological parameters |
| url | https://doi.org/10.4209/aaqr.2019.10.0516 |
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