Independent Subspace Analysis of the Sea Surface Temperature Variability: Non-Gaussian Sources and Sensitivity to Sampling and Dimensionality

Figure 6

Ranked SVs , , contributing to NE, both from real SSTA data (solid squares) and from Gaussian surrogate realizations (open squares) and 90% (red), 95% (blue) quantiles of obtained from Gaussian surrogates after rank , to be compared with . The trailing 6 SVs is not significant at , leading to . The NE components restricted to the non-Gaussian subspace are marked as open circles.