Fig. 1. Algorithm flow diagram

Fig. 2. Fit curve of red-blue band equivalent surface reflectivity

Fig. 3. Effect of four aerosol types on apparent reflectivity

Fig. 4. Relationship between energy E and cluster number m

Fig. 5. Volumetric spectral distribution of five aerosol types

Fig. 6. (a) The birefringence index real part (a) and birefringence index imaginary part (b) of five types of aerosol

Fig. 7. Inversion results and consistency of the aerosol optical depth of GF-4 satellite
(a): Original image; (b): C1 aerosol; (c): C4 aerosol; (d): Continental aerosol;(e): MODIS aerosol products; (f) Analysis of C1 type aerosol inversion results;(g): Analysis of C4 type aerosol inversion result; (h): Analysis of continental aerosol inversion results

Table 1. Parameters of PMI sensor for GF-4 satellite

Table 2. Parameters of PSO clustering algorithm

Table 3. Comparison of inversion results of different aerosol types with AERONET ground-based data