Marine Carbonate Chemistry

Turn two independent seawater carbonate measurements into a reproducible speciation table, mineral saturation estimates, and a record of the calculation assumptions. Targets PyCO2SYS 1.8.3.4, tested with Python 3.13 and NumPy 2.5.3. As reviewed on 2026-10-01, this remains the stable PyPI release. The v2 documentation is for a beta with breaking changes; use the v1 documentation for this pin.

When to use

• Analyze bottle samples, shipboard carbonate measurements, or acidification experiments.
• Calculate total-scale pH, seawater pCO2/fCO2, carbonate ion, aragonite/calcite saturation state, or the Revelle factor from a valid measured pair.
• Convert a system determined at laboratory conditions to specified ocean conditions.
• Quantify how stated measurement uncertainties affect the calculated results.