Fig. 6

Variation characteristics of vertical wind speed profiles in the boundary layer of Hong Kong (a, b, c) and Shenzhen (d, e, f) during Typhoon Saola. Red circles indicate the mean wind speed at each height, and the red line shows the best-fit power-law profile. The boxplots represent the wind speed distribution at each height, with the box showing the interquartile range (25th–75th percentiles), and black crosses marking outliers.