Fig. 3: Relating SST PC2 to sea surface height and sea-level index.
From: Pan-Atlantic decadal climate oscillation linked to ocean circulation
a Monthly anomalies of sea surface height regressed onto the normalized SST PC2 time series. Stippling denotes statistical significance at 95% confidence level; white contours denote explained variances at interval of 3%. The tide-gauge sites used along the United States northeast coast 37–42°N are marked black. b, c Coherence (left axis) and phase lag (right axis) between sea-level index and b SST PC2 and c ITCZ. The sea-level index leads (follows) PC2/ITCZ at positive (negative) lags. The vertical grey bar shows the 10–15 year period band. The dashed horizontal line denotes 95% confidence level for squared coherence.
