Aimed at understanding the mesoscale eddy’s effect on the subduction and dissipation of the North Pacific Subtropical Mode Water, a field experiment namely the Pacific Mode Water Ventilation Experiment (P-MoVE) was carried out in the northwestern Pacific Ocean (Xie et al., 2013; Xu et al., 2016). During 27 March to 5 April 2014, we conducted 54 station surveys in an anticyclonic eddy (AE) and a nearby weak cyclonic eddy (CE) with a spacing of 0.25° (Figure 1). The conductivity-temperature-depth system (CTD 911plus, Sea-Bird Electronics) and microstructure probe (MSS-90, Sea & Sun Technology) were deployed to obtain temperature-salinity profiles and microscale velocity shear at these stations.