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Predominance diagrams

Speciation plots

Reaction path calculations

Fitting

Contouring


Weekly average CO2 at Mauna Loa

Aug 9, 2026
427.59 ppm
1 year ago
425.53 ppm
10 years ago
403.08 ppm
Pre-industrial
270 ppm
Year-on-year change
2.06 ppm

When will the Year-on-year increase come down to zero, or at least show a definite downturn? At the moment, it appears to be still on an upward trend! The reason is pretty clear.