Measurement report: Enhanced photochemical formation of formic and isocyanic acids in urban regions aloft – insights from tower-based online gradient measurements

Yang, Qing; Li, Xiao-Bing; Yuan, Bin; Zhang, Xiaoxiao; Huangfu, Yibo; Yang, Lei; He, Xianjun; Qi, Jipeng; Shao, Min

doi:https://doi.org/10.5194/acp-24-6865-2024

Articles | Volume 24, issue 11

https://doi.org/10.5194/acp-24-6865-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-6865-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 11

Measurement report

|

14 Jun 2024

Measurement report |

| 14 Jun 2024

Measurement report: Enhanced photochemical formation of formic and isocyanic acids in urban regions aloft – insights from tower-based online gradient measurements

Qing Yang, Xiao-Bing Li, Bin Yuan, Xiaoxiao Zhang, Yibo Huangfu, Lei Yang, Xianjun He, Jipeng Qi, and Min Shao

Supplement

https://doi.org/10.5194/acp-24-6865-2024-supplement

Data sets

Measurement report data of HCOOH and HNCO, V2 Qing Yang https://doi.org/10.7910/DVN/ANH0WE

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Short summary

Online vertical gradient measurements of formic and isocyanic acids were made based on a 320 m tower in a megacity. Vertical variations and sources of the two acids were analyzed in this study. We find that formic and isocyanic acids exhibited positive vertical gradients and were mainly contributed by photochemical formations. The formation of formic and isocyanic acids was also significantly enhanced in urban regions aloft.