Figure 2
From: Long-term ocean acidification trends in coastal waters around Japan
Long-term trends in the oceanic pH in the coastal regions of the Sea of Japan and North Pacific. The Demonstration Laboratory (DL) on the coast of the Sea of Japan (a) and Central Laboratory (CL) on the coast of the Pacific Ocean (b). Background dots indicate data. Blue circles show the annual averages. Black straight lines show linear trends while sine curves show decadal oscillations. Blue and red straight lines show the 95% confidence level and prediction intervals of the predicted values, respectively. Table 1 summarizes the trend slopes, acidification rates, statistical p-values, and correlation coefficients.
