Fig. 3: Performance of the Random Forest (RF) model for predicting aerosol pH and the relative importance of individual factors. | Nature Communications

Fig. 3: Performance of the Random Forest (RF) model for predicting aerosol pH and the relative importance of individual factors.

From: Changing aerosol chemistry is redefining HONO sources

Fig. 3

a The linear relationship between the aerosol pH calculated with the ISORROPIA II model and the predicted values by the RF Model; b The time series of aerosol pH; c The relative importance of each factor for aerosol pH, T: Temperature; AN: NH4NO3; AS: (NH4)2SO4; RH: Relatively Humidity; OA: Organic Aerosol; d The SHAP (Shapley additive explanations) value of each feature variable.

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