Impact of urban heat island on inorganic aerosol in the lower free troposphere: a case study in Hangzhou, China

Kang, Hanqing; Zhu, Bin; de Leeuw, Gerrit; Yu, Bu; van der A, Ronald J.; Lu, Wen

doi:https://doi.org/10.5194/acp-22-10623-2022

Articles | Volume 22, issue 16

https://doi.org/10.5194/acp-22-10623-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-10623-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 16

Research article

|

22 Aug 2022

Research article |

| 22 Aug 2022

Impact of urban heat island on inorganic aerosol in the lower free troposphere: a case study in Hangzhou, China

Hanqing Kang, Bin Zhu, Gerrit de Leeuw, Bu Yu, Ronald J. van der A, and Wen Lu

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https://doi.org/10.5194/acp-22-10623-2022-supplement

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Impact of urban heat island on inorganic aerosol in the lower free troposphere: a case study in Hangzhou, China Hanqing Kang, Bin Zhu, Gerrit de Leeuw, Bu Yu, Ronald J. van der A, and Wen Lu https://doi.org/10.5281/zenodo.6983877

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Short summary

This study quantified the contribution of each urban-induced meteorological effect (temperature, humidity, and circulation) to aerosol concentration. We found that the urban heat island (UHI) circulation dominates the UHI effects on aerosol. The UHI circulation transports aerosol and its precursor gases from the warmer lower boundary layer to the colder lower free troposphere and promotes the secondary formation of ammonium nitrate aerosol in the cold atmosphere.