Fig. 1: Comparison between the linear regression models on reconstructing the equatorial SSTa.

a The original spatiotemporal evolutions of the SST anomaly field. b The reconstructed SST anomaly field using the univariate linear regression based on TE. c The residual between the SST fields in a and b. d The reconstructed SST anomaly field using the univariate linear regression based on TC. e The residual between the SST fields in a and d. f The reconstructed SST anomaly field using the bivariate linear regression based on TE and TC. g The residual between the SST fields in a and f.