Fig. 1. Flowchart of water cloud retrieval algorithm based on polarized ML

Fig. 2. Flowchart of water cloud retrieval algorithm based on dual-field-of-view (dual-FOV) HSRL

Fig. 3. Variations of polarized ML signals and dual-FOV HSRL molecular signals versus the extinction coefficient and the effective radius of water clouds. (a) Parallel channel signals of polarized ML Bpara; (b) perpendicular channel signals of polarized ML Bper; (c) depolarization ratio δ; (d) small-FOV molecular channel signals of dual-FOV HSRL BM1; (e) large-FOV molecular channel signals of dual-FOV HSRL BM2; (f) small-FOV molecular channel signals over large-FOV molecular channel signals of dual-FOV HSRL

Fig. 4. Polarized ML signals and dual-FOV HSRL molecular signals of four water cloud cases. (a) Parallel channel signals of polarized ML Bpara; (b) perpendicular channel signals of polarized ML Bper; (c) small-FOV molecular channel signals of dual-FOV HSRL BM1; (d) large-FOV molecular channel signals of dual-FOV HSRL BM2

Fig. 5. Lookup table results for polarized ML retrieval of four water cloud cases. (a) Case 1; (b) case 2; (c) case 3; (d) case 4

Fig. 6. Comparison of simulated and actual dual-FOV HSRL molecular signals at the end of retrieval for four water cloud cases. (a) Case 1; (b) case 2; (c) case 3; (d) case 4

Fig. 7. Comparison of retrieval results of four water cases based on polarized ML signals and dual-FOV HSRL molecular signals with the true values