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Mauna Loa CO₂ hits 431.12 ppm - 2 standard deviations above recent mean
Mar 16, 2026 — Apr 15, 2026 May 11, 2026
Latest Mauna Loa reading of 431.12 ppm exceeds the recent mean of 424.35 by 2.0 standard deviations - a statistically significant spike in atmospheric CO₂. This reading represents the highest value in the recent dataset, occurring during a period when global temperature anomaly dropped 24.4% over 3 months to 0.93°C. The divergence between this CO₂ spike and cooling temperatures suggests complex atmospheric dynamics at play that merit closer examination.