Constraining non-methane VOC emissions with TROPOMI HCHO observations: impact on summertime ozone simulation in August 2022 in China

Feng, Shuzhuang; Jiang, Fei; Qian, Tianlu; Wang, Nan; Jia, Mengwei; Zheng, Songci; Chen, Jiansong; Ying, Fang; Ju, Weimin

doi:https://doi.org/10.5194/acp-24-7481-2024

Articles | Volume 24, issue 13

https://doi.org/10.5194/acp-24-7481-2024

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

https://doi.org/10.5194/acp-24-7481-2024

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

Articles | Volume 24, issue 13

Research article

|

02 Jul 2024

Research article |

| 02 Jul 2024

Constraining non-methane VOC emissions with TROPOMI HCHO observations: impact on summertime ozone simulation in August 2022 in China

Shuzhuang Feng, Fei Jiang, Tianlu Qian, Nan Wang, Mengwei Jia, Songci Zheng, Jiansong Chen, Fang Ying, and Weimin Ju

Supplement

https://doi.org/10.5194/acp-24-7481-2024-supplement

Data sets

Non-methane volatile organic compound emissions over China estimated using TROPOMI HCHO retrievals Shuzhuang Feng and Fei Jiang https://doi.org/10.5281/zenodo.10079006

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Short summary

We developed a multi-air-pollutant inversion system to estimate non-methane volatile organic compound (NMVOC) emissions using TROPOMI formaldehyde retrievals. We found that the inversion significantly improved formaldehyde simulations and reduced NMVOC emission uncertainties. The optimized NMVOC emissions effectively corrected the overestimation of O₃ levels, mainly by decreasing the rate of the RO₂ + NO reaction and increasing the rate of the NO₂ + OH reaction.