Figure 9 | Scientific Reports

Figure 9

From: Decadal variability of tropical tropopause temperature and its relationship to the Pacific Decadal Oscillation

Figure 9

The regression pattern of lower stratospheric (85 hPa) water vapour anomalies on the low-pass (6-year) filtered PDO index (thick black lines in Fig. 5f) form the Natural CESM experiment.

The time series of lower stratospheric water vapour are low-pass filtered before applying the regression. The black contour lines show the explained variance in percent. Stippling indicates the 95% significance level, with autocorrelation effects taken into account. Maps were produced using licensed IDL (, version 8.1.

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