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Spatiotemporal variations and pollution sources of HCHO over Jiangsu-Zhejiang-Shanghai based on OMI

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Abstract

Jiangsu-Zhejiang-Shanghai (JZH) is an important industrial area and foreign trade base in China. In recent years, due to economic development and urban expansion, the emissions of volatile organic compound (VOC) have been increasing, which exacerbated the problem of formaldehyde (HCHO) pollution. The Ozone Monitoring Instrument (OMI) remote sensing has the characteristics of high spatial coverage and strong time continuity, which can enable long-term serial and large-scale dynamic monitoring of atmospheric pollutants. Based on the inversion data of OMI, the paper analyses the temporal-spatial distribution and change trend of the HCHO in JZH from 2008 to 2019, and discusses the transmission path of HCHO in combination with the backward trajectory. In addition, the degree of contribution of anthropogenic sources and natural sources to HCHO are analysed, which is the local HCHO pollution providing reference opinions on governance and atmospheric energy saving and emission reduction. The results showed that the spatial distribution of HCHO in JZH was uneven and will continue to increase in the future. Different types of artificial sources have different degrees of contribution to the study area. In addition, vegetation, temperature, and precipitation have obvious high correlations with HCHO, indicating that natural factors have an important influence on HCHO.

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Data availability

The air pollutant data used during this study are from the NASA, and other datasets analyzed are available from the corresponding author on reasonable request.

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Acknowledgements

The authors thank the reviewers for their helpful comments, which is helpful for improving our manuscript.

Funding

This work was supported by the Research on Remote Sensing Monitoring of Air Pollutants in Gansu Province (No. 17YF1FA120), Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province.

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Contributions

Tianzhen Ju: resources and project administration. Jiachen Fan: writing and conceptualization. Xin Liu: visualization. Yulin Li: visualization. Jiale Duan: software. Tunyang Geng: software. Ruirui Huang: software. Zhuohong Liang: software.

Corresponding author

Correspondence to Jiachen Fan.

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The authors declare no competing interests.

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Ju, T., Fan, J., Liu, X. et al. Spatiotemporal variations and pollution sources of HCHO over Jiangsu-Zhejiang-Shanghai based on OMI. Air Qual Atmos Health 15, 15–30 (2022). https://doi.org/10.1007/s11869-021-01076-w

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  • DOI: https://doi.org/10.1007/s11869-021-01076-w

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