Figure 3
From: Long-term ocean acidification trends in coastal waters around Japan
Comparison between the mean annual oceanic pH25T time-series for the observed and expected values for the coastal regions of the Sea of Japan and North Pacific. The Demonstration Laboratory (DL) on the Sea of Japan coast (a) and Central Laboratory (CL) on the Pacific Ocean coast (b). White circles show theoretical values and black circles show annual observation averages. The dashed line indicates the linear trends in the theoretical variability for the DL and CL; these decreasing trends are 0.0022 and 0.0016 year–1, respectively. The solid line shows the linear trend in the annual observation averages for the DL and CL; these slopes are identical to the annual averages, which are – 0.0037 and – 0.0064 year–1, respectively. The thick solid lines show the periods during which Kuroshio meandering was observed.
