Fig. 2: Impacts of internal variability on the PWC change during the period of 1980–2015. | Nature Communications

Fig. 2: Impacts of internal variability on the PWC change during the period of 1980–2015.

From: A very likely weakening of Pacific Walker Circulation in constrained near-future projections

Fig. 2: Impacts of internal variability on the PWC change during the period of 1980–2015.The alternative text for this image may have been generated using AI.

Spatial distributions of trends in sea surface temperature [SST; shading, units: K (36 year)−1] and wind at 850 hPa [UV850; vectors, units: m s−1 (36 year)−1] for a. ERSST v4 and ERAIM, b MPI-GE ensemble mean, c Max10, and d the Max10-Min10 composite differences. Max10 and Min10 represent 10 ensemble members showing the largest strengthening and weakening of the PWC during 1980-2015, respectively. Slant hatching denotes trends significant at 95% confidence level. e Scatter plot of IPO index trends [x axis, units: K (36 year)−1] and PWC index trends [y axis, units: Pa (36 year)−1] during 1980-2015 among 100 MPI-GE members. Red and blue dots denote the Max10 and Min10 members, respectively. Black diamond, triangle and asterisk denote the observed values from ERSST v4 and HadSLP2, ERSST v4 and ERAIM, and ERSST v4 and ERA5. The correlation coefficient (cc) is indicated at the top of the panel. f The same as e, but for AMO index trends.

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