Ocean pH and NASA’s Seawater O-18 Map

A map by NASA authors [1] details sample locations used to develop the Global Seawater Oxygen-18 Database.  This relates to the Vienna Standard Mean Ocean Water (VSMOW) resource, which is a widely u...

Connections between the thermocline and ocean pH

This site contains over 35 posts about the mapping and distribution of ocean pH based on data from the NOAA World Ocean Database (WOD).   I’ve often explored the ocean pH profiles for the year...

Measurement of Ocean pH. Part 1

Why is an inexpensive potentiometric glass electrode instrument so accurate in the measurement of pH, and why are derived pH values and spectrophotometric instruments* so costly and opaque? I think i...