Figure 2
From: Persistent spatial structuring of coastal ocean acidification in the California Current System
Increase in pH variability (coefficient of variability) as a function of pH minimum across surface ocean datasets from present study (solid circles) and from a cross-biome survey13 (open circles) that includes representation from tropical, temperate, and polar surface ocean sites. Three sites that are strongly influenced by unique local conditions (an estuary, a volcanic CO2 vent and a groundwater discharge site) are excluded.
