Fig. 4: Low-frequency component analysis global and multidecadal modes of sea-surface temperature (SST) variations.
From: Natural and anthropogenic contributions to the hurricane drought of the 1970s–1980s
Patterns of sea-surface temperature (color shading) associated with the global mode (a) and the dust-sulfate mode (c). The dust-sulfate pattern is plotted along with dust aerosol optical depth contours22 for τ = [0.150.30.45] (gray contours), and the main development region is identified (dotted black box). Associated components for the global mode (b) and the dust-sulfate mode (d), including variability at all frequencies (gray) and only at low frequencies (black).
