Yuan CAO, Mingyan GONG, Fei SHEN, Jinji MA, Guang YANG, Xiwen LIN. Estimation of PM2.5 concentration and analysis of influencing factors in China[J]. Journal of Atmospheric and Environmental Optics, 2023, 18(3): 245
- Journal of Atmospheric and Environmental Optics
- Vol. 18, Issue 3, 245 (2023)
Fig. 1. Random forest model inversion accuracy. (a) Train dataset; (b) test dataset
Fig. 2. Spatial distribution of original and estimated PM2.5 concentration on August 20, 2018. (a) Original value; (b) estimate value
Fig. 3. Seasonal model inversion accuracy on test dataset. (a) Spring model; (b) summer model;(c) autumn model; (d) winter model
Fig. 4. Area model inversion accuracy on test dataset. (a) Eastern model; (b) central model; (c) western model
Fig. 5. Model feature importance ranking
Fig. 6. Three-dimensional spatial effect diagram of influence factors on changes of PM2.5 daily concentration. (a) AOD and BLH;(b) LAT and BLH; (c) BLH and TMP; (d) TMP and RH
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Table 1. Information table of influencing factors
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Table 2. Seasonal model training parameter table
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Table 3. Area model training parameter table
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Table 4. Accuracy table of model inversion
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Table 5. Model precision comparison table
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