Fig. 1

Typical temperature and current response in upper ocean caused by a tropical cyclone. The red dot is the tropical cyclone centre and the two black circles surrounding it are the radii showing 1 to 3 times of the radius of the maximum wind speed, respectively. Black line refers the tropical cyclone track. Red (blue) shadings refer warm (cold) anomalies or negative (positive) salinity anomalies. The primary cold anomalies in the third and fourth layers also correspond to the position of upwelling. Vectors refer current. Waves on the first layer refer surface waves