| Popis: |
In this study, we use satellite and drifting-buoy synergistic observations to investigate the connections between tropical cyclone (TC) surface winds and currents, as well as their spatial distribution characteristics. The observed ageostrophic current speeds in ocean mixed layer (OML) increase linearly with wind speeds. The mean ratio (ageostrophic current speed to the wind speed) is around 2% in the left-front and left-rear quadrants with smaller variability, while it changes between 2% and 4% in the right-front and right-rear quadrants and shows much higher variations. Surface winds and currents both exhibit strong asymmetric features, showing larger wind speed and current velocity on the right side of the TC. The wind directions were approximately aligned with the current directions in the right-front quadrant, while a difference of about 90° was observed in the left-front and left-rear quadrants. The direction discrepency between wind and current in the right-rear quadrant was relatively small. |
