Fig. 2: Mean state of the Luzon Strait overflow.

The vertical profile below 1500 m of the whole-period-mean potential temperature (red) and along-channel velocity (blue) at BC and LT, respectively, with shading showing tide-excluded standard deviation. Positive (negative) velocity indicates that waters flow into (out of) the South China Sea. The black triangles indicate the mooring position. The black dashed lines denote zero velocity and a 2.2 °C profile. The abbreviations BC and LT represent BC mooring and LT mooring, respectively.