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Atmospheric CO₂ concentration

current
425 ppm
goal by 2130
280 ppm

Methodology

Mauna Loa annual mean CO₂ concentration. The 280 ppm goal is pre-industrial baseline; the 2130 horizon is the High-Energy Repair target.

Sources

  • NOAA Global Monitoring Laboratory — Mauna Loa

Snapshots

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Related research

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