Individual skill
marine-carbonate-chemistry
Solves seawater carbonate chemistry with PyCO2SYS for chemical oceanography, ocean acidification, and marine carbon-cycle research. Use for paired total alkalinity, dissolved inorganic carbon, pH, or seawater pCO2/fCO2 measurements; carbonate speciation; aragonite and calcite saturation; Revelle factors; lab-to-in-situ temperature and pressure corrections; and measurement uncertainty propagation. Applies to carbonate-system calculations, not general aqueous speciation or air-sea gas-flux estimation.
skills/marine-carbonate-chemistry/SKILL.md
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# 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](https://mvdh.xyz/PyCO2SYS/)
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.