Articles | Volume 20, issue 6
Atmos. Chem. Phys., 20, 3273–3289, 2020
https://doi.org/10.5194/acp-20-3273-2020
Atmos. Chem. Phys., 20, 3273–3289, 2020
https://doi.org/10.5194/acp-20-3273-2020

Research article 19 Mar 2020

Research article | 19 Mar 2020

Improved 1 km resolution PM2.5 estimates across China using enhanced space–time extremely randomized trees

Jing Wei et al.

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Short summary
This study introduced an enhanced space–time extremely randomized trees (STET) approach to improve the 1 km resolution ground-level PM2.5 estimates across China using the remote sensing technology. The STET model shows high accuracy and strong predictive power and appears to outperform most models reported by previous studies. Thus, it is of great importance for future air pollution studies at medium- or small-scale areas and will be applied to generate the historical PM2.5 dataset across China.
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