Articles | Volume 22, issue 16
https://doi.org/10.5194/acp-22-10623-2022
https://doi.org/10.5194/acp-22-10623-2022
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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Latest update: 23 May 2024
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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.
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