| Location |
Source |
Rate of decrease in pH |
| Ulleung Basin East/Japan Sea |
(Kim et al., 2013) |
0.04 pH units/decade since 1958 |
| ALOHA (22◦45’N, 158◦00’W) |
(Doneyet al., 2012; http://hahara.soest.hawaii.edu) |
0.02 pH units/decade since 1989 |
| BATS (31◦40’N, 64◦10’W), ESTOC (29◦10’N, 15◦30’W) |
(IPCC 2007) |
0.02 pH units since 1980 |
| North Atlantic Ocean near Bermuda |
(Bates et al., 2012) |
0.05 pH units since 1983 till 2011 |
| Ishikawa coast, along the sea of Japan |
(Agabolaet al., 2013) |
0.23 pH units since 1984 till 2009 |
| Black Sea |
(Polonsky, 2012) |
0.4 pH units/decade in 1960 and between 1980 and 2000 |
| Puget sound estuary, in northwest Washington State that is connected to the Pacific Ocean at its northern end by the Strait of Juan de Fuca |
(Feely et al., 2010) |
0.05 pH units in 2008
|
| Bay of Bengal off Bangladesh |
(Rashid et al., 2013) |
0.2 pH units since 1994 till 2012 |
| Western sector of Indian Sundarbans |
This study |
0.024 pH units since 1984 |
