| SSP | Sound Speed Profile |
| RMSE | Root Mean Square Error |
| MAE | Mean Absolute Error |
| EOF | Empirical Orthogonal Function |
| AR | Autoregressive |
| ARIMA | Autoregressive Integrated Moving Average |
| ConvLSTM | Convolutional Long Short-Term Memory |
| FDGRC-Net | Full-Depth Dynamic Gradient-Guided Residual Correction Network |
| GLORYS | Global Ocean Reanalysis and Simulation |