Figure 3

Regressed and reconstructed anomalies of ocean environmental variables in the equatorial Pacific Ocean with respect to the skipjack tuna catch amount in the Federated States of Micronesia (FSM) from 1990–2014: (a) temperature at 100 m, (b) current velocity at 60 m (shading: zonal velocity), (c) salinity at 5 m, and (d) precipitation. Figures in (a,c), (b), and (d) were created from the analysis of EN4.1.1, SODA 3.4.2, and CMAP, respectively, with MATLAB R2018a (https://kr.mathworks.com/).