Fig. 1. A moderately enlarged image of complex ice crystal particles ranging from 250 to 4500 times. (a) Bullet shaped lotus pedestals and non classified compact convolutions of "singular polyhedra"; (b) Crystals with diamond shaped and prismatic linear coarsening and discrete adhesive spots on the surface; (c) Mixed crystals with lotus pedestals; (d) Crystals with irregular base cross-sections, geometrically layered and hollow cylindrical shapes, and high coarsening degree^[8]

Fig. 2. Combination structure ice crystal particle model (composed of dipole lattice). (a) Ellipsoid regular tetrahedron; (b) Ellipsoid hexagonal plate; (c) Regular tetrahedron hexagonal plate; (d) Ellipsoid regular tetrahedron hexagonal plate

Fig. 3. Target orientation in the framework coordinate system of the laboratory

Fig. 4. Near-field diagram of ellipsoidal particles

Fig. 5. Near-field diagram of a regular tetrahedral particle

Fig. 6. Hexagonal plate-shaped near-field diagram

Fig. 7. Near-field diagram of regular tetrahedral-hexagonal plate-shaped particle agglomeration

Fig. 8. Near-field diagram of regular tetrahedral-ellipsoidal-hexagonal plate-shaped particle agglomeration

Fig. 9. Individual ice crystal particles

Fig. 10. Agglomerated particles

Fig. 11. Individual ice crystal particles

Fig. 12. Agglomerated particles

Fig. 13. Changes in the phase matrix elements of individual ice crystal particles

Fig. 14. Changes in the elements of the aggregate particle phase matrix