Enhanced heating rate of black carbon above the planetary boundary layer over megacities in summertime
The fast development of a secondary aerosol layer was observed over megacities in eastern Asia during summertime. Within three hours, from midday to early afternoon, the contribution of secondary aerosols above the planetary boundary layer (PBL) increased by a factor of three to five, and the coatin...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2019-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/ab4872 |
| _version_ | 1827870414526742528 |
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| author | Dantong Liu Delong Zhao Zhenzhen Xie Chenjie Yu Ying Chen Ping Tian Shuo Ding Kang Hu Douglas Lowe Quan Liu Wei Zhou Fei Wang Jiujiang Sheng Shaofei Kong Dawei Hu Zhenzhu Wang Mengyu Huang Deping Ding |
| author_facet | Dantong Liu Delong Zhao Zhenzhen Xie Chenjie Yu Ying Chen Ping Tian Shuo Ding Kang Hu Douglas Lowe Quan Liu Wei Zhou Fei Wang Jiujiang Sheng Shaofei Kong Dawei Hu Zhenzhu Wang Mengyu Huang Deping Ding |
| author_sort | Dantong Liu |
| collection | DOAJ |
| description | The fast development of a secondary aerosol layer was observed over megacities in eastern Asia during summertime. Within three hours, from midday to early afternoon, the contribution of secondary aerosols above the planetary boundary layer (PBL) increased by a factor of three to five, and the coatings on black carbon (BC) also increased and enhanced its absorption efficiency by 50%. This tended to result from the intensive actinic flux received above the PBL which promoted photochemical reactions. The absorption of BC could be further amplified by the strong reflection of solar radiation over the cloud top across the PBL. This enhanced heating effect of BC introduced by combined processes (intensive solar radiation, secondary formation and cloud reflection) may considerably increase the temperature inversion above the PBL. This mechanism should be considered when evaluating the radiative impact of BC, especially for polluted regions receiving strong solar radiation. |
| first_indexed | 2024-03-12T15:57:27Z |
| format | Article |
| id | doaj.art-3235c77e6e934d82a9177a021400d8d7 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:57:27Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-3235c77e6e934d82a9177a021400d8d72023-08-09T14:47:44ZengIOP PublishingEnvironmental Research Letters1748-93262019-01-01141212400310.1088/1748-9326/ab4872Enhanced heating rate of black carbon above the planetary boundary layer over megacities in summertimeDantong Liu0https://orcid.org/0000-0003-3768-1770Delong Zhao1Zhenzhen Xie2Chenjie Yu3Ying Chen4Ping Tian5Shuo Ding6https://orcid.org/0000-0003-3669-8490Kang Hu7Douglas Lowe8Quan Liu9Wei Zhou10Fei Wang11Jiujiang Sheng12Shaofei Kong13Dawei Hu14Zhenzhu Wang15https://orcid.org/0000-0002-3648-6124Mengyu Huang16Deping Ding17Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University , Hangzhou, Zhejiang, People’s Republic of ChinaBeijing Key Laboratory of Cloud, Precipitation and Atmospheric Water Resources, Beijing, People’s Republic of China; Beijing Weather Modification Office, Beijing, People’s Republic of China; School of Atmospheric Sciences, Nanjing University , Nanjing, People’s Republic of ChinaHuaian Meteorological Observatory of Jiangsu Province, Huaian, People’s Republic of ChinaCentre for Atmospheric Sciences, School of Earth and Environmental Sciences, University of Manchester , Manchester M13 9PL, United KingdomLancaster Environment Centre, Lancaster University , Lancaster LA1 4YQ, United KingdomBeijing Key Laboratory of Cloud, Precipitation and Atmospheric Water Resources, Beijing, People’s Republic of China; Beijing Weather Modification Office, Beijing, People’s Republic of ChinaDepartment of Atmospheric Sciences, School of Earth Sciences, Zhejiang University , Hangzhou, Zhejiang, People’s Republic of ChinaDepartment of Atmospheric Sciences, School of Earth Sciences, Zhejiang University , Hangzhou, Zhejiang, People’s Republic of ChinaCentre for Atmospheric Sciences, School of Earth and Environmental Sciences, University of Manchester , Manchester M13 9PL, United KingdomBeijing Key Laboratory of Cloud, Precipitation and Atmospheric Water Resources, Beijing, People’s Republic of China; Beijing Weather Modification Office, Beijing, People’s Republic of ChinaBeijing Key Laboratory of Cloud, Precipitation and Atmospheric Water Resources, Beijing, People’s Republic of China; Beijing Weather Modification Office, Beijing, People’s Republic of ChinaBeijing Key Laboratory of Cloud, Precipitation and Atmospheric Water Resources, Beijing, People’s Republic of China; Beijing Weather Modification Office, Beijing, People’s Republic of ChinaBeijing Key Laboratory of Cloud, Precipitation and Atmospheric Water Resources, Beijing, People’s Republic of China; Beijing Weather Modification Office, Beijing, People’s Republic of ChinaDepartment of Atmospheric Sciences, School of Environmental Studies, China University of Geosciences (Wuhan) , Wuhan, People’s Republic of ChinaCentre for Atmospheric Sciences, School of Earth and Environmental Sciences, University of Manchester , Manchester M13 9PL, United KingdomAnhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, Anhui, People’s Republic of ChinaBeijing Key Laboratory of Cloud, Precipitation and Atmospheric Water Resources, Beijing, People’s Republic of China; Beijing Weather Modification Office, Beijing, People’s Republic of ChinaBeijing Key Laboratory of Cloud, Precipitation and Atmospheric Water Resources, Beijing, People’s Republic of China; Beijing Weather Modification Office, Beijing, People’s Republic of ChinaThe fast development of a secondary aerosol layer was observed over megacities in eastern Asia during summertime. Within three hours, from midday to early afternoon, the contribution of secondary aerosols above the planetary boundary layer (PBL) increased by a factor of three to five, and the coatings on black carbon (BC) also increased and enhanced its absorption efficiency by 50%. This tended to result from the intensive actinic flux received above the PBL which promoted photochemical reactions. The absorption of BC could be further amplified by the strong reflection of solar radiation over the cloud top across the PBL. This enhanced heating effect of BC introduced by combined processes (intensive solar radiation, secondary formation and cloud reflection) may considerably increase the temperature inversion above the PBL. This mechanism should be considered when evaluating the radiative impact of BC, especially for polluted regions receiving strong solar radiation.https://doi.org/10.1088/1748-9326/ab4872black carbonabsorption enhancementheating ratecloud reflection |
| spellingShingle | Dantong Liu Delong Zhao Zhenzhen Xie Chenjie Yu Ying Chen Ping Tian Shuo Ding Kang Hu Douglas Lowe Quan Liu Wei Zhou Fei Wang Jiujiang Sheng Shaofei Kong Dawei Hu Zhenzhu Wang Mengyu Huang Deping Ding Enhanced heating rate of black carbon above the planetary boundary layer over megacities in summertime Environmental Research Letters black carbon absorption enhancement heating rate cloud reflection |
| title | Enhanced heating rate of black carbon above the planetary boundary layer over megacities in summertime |
| title_full | Enhanced heating rate of black carbon above the planetary boundary layer over megacities in summertime |
| title_fullStr | Enhanced heating rate of black carbon above the planetary boundary layer over megacities in summertime |
| title_full_unstemmed | Enhanced heating rate of black carbon above the planetary boundary layer over megacities in summertime |
| title_short | Enhanced heating rate of black carbon above the planetary boundary layer over megacities in summertime |
| title_sort | enhanced heating rate of black carbon above the planetary boundary layer over megacities in summertime |
| topic | black carbon absorption enhancement heating rate cloud reflection |
| url | https://doi.org/10.1088/1748-9326/ab4872 |
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