OCEAN HEALTH
Seawater pH (pH)
Acidity of seawater. Long, slow decline tracks ocean acidification, which dissolves the shells and skeletons of calcifying species.
Threshold Bands
| Band | Range | State |
|---|---|---|
| Normal | ≥ 8.05 | OK |
| Acidifying | 7.95–8.05 | WARN |
| Corrosive | < 7.95 | CRIT |
Formula
Spectrophotometric pH on the total scale, temperature-corrected.