Earth Science & Energy
Carbonate Alkalinity & Calcite Saturation Ocean Acidification
Calculate carbonate alkalinity & calcite saturation ocean acidification using the stated engineering or scientific relationship and adjustable field inputs.
Preparing your result…
What this calculator does
Calculates Carbonate Alkalinity & Calcite Saturation Ocean Acidification using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
Calcite saturation Ω = [Ca²⁺][CO₃²⁻] ÷ K*sp (same units and sample conditions)
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Calcite saturation Ω=[Ca²⁺][CO3²⁻]/Ksp*, using the same concentration/activity convention and sample temperature, salinity and pressure for numerator and solubility product.
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • This computes saturation only; Ω>1 supersaturated, Ω<1 undersaturated. It does not calculate carbonate or total alkalinity, pH or a full ocean acidification state. Identify Ksp convention and concentration units; add a carbonate-system solver and independent chemistry inputs or narrow title.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Calcium [Ca²⁺] (mmol/kg) | Carbonate ion [CO₃²⁻] (µmol/kg) | Stoichiometric K*sp at sample T, S, p (× 10⁻⁷) (mol²/kg²) | Calcite saturation state Ω |
|---|---|---|---|---|
| Worked example | 10.28 | 200 | 4.28 | 4.8037 |
| Half the amounts | 5.14 | 100 | 2.14 | 2.4019 |
| Double the amounts | 20.56 | 400 | 8.56 | 9.6075 |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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