Articles | Volume 16, issue 14
https://doi.org/10.5194/gmd-16-4137-2023
https://doi.org/10.5194/gmd-16-4137-2023
Development and technical paper
 | 
24 Jul 2023
Development and technical paper |  | 24 Jul 2023

An optimized semi-empirical physical approach for satellite-based PM2.5 retrieval: embedding machine learning to simulate complex physical parameters

Caiyi Jin, Qiangqiang Yuan, Tongwen Li, Yuan Wang, and Liangpei Zhang

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Latest update: 23 Jun 2024
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Short summary
The semi-empirical physical approach derives PM2.5 with strong physical significance. However, due to the complex optical characteristic, the physical parameters are difficult to express accurately. Thus, combining the atmospheric physical mechanism and machine learning, we propose an optimized model. It creatively embeds the random forest model into the physical PM2.5 remote sensing approach to simulate a physical parameter. Our method shows great optimized performance in the validations.