Supplemental Figure 2. The effect linear detrending has on observed EOFs in the NP. For observations where no detrending occurs, A) and C) show the first EOF spatial pattern and time series respectively. B) and D) show the same but for the second EOF. For linearly detrended observations, E) and G) show the first EOF spatial pattern and time series respectively, while F) and H) show the same for the second EOF. I) shows the time series from C) (linearly detrended) and H) together to show their similarity (93% correlation, significant at the 99% threshold). The red curves are the same time series, while the blue curve in I) is equivalent to the time series in C) but with the linear slope removed.