datoid

Atmospheric CO₂ at Mauna Loa reached 426.90 ppm on May 15, 2024—2.2 standard deviations above the 60-point rolling average of 417.52 ppm. This represents the highest seasonal peak on record, with CO₂ levels now 50+ ppm above pre-industrial baselines of ~315 ppm. The spike coincides with concerning cross-signals: global temperature anomalies up 9.3% over 3 months to +1.18°C, while economic indicators show simultaneous records in unemployment lows and inflation highs. What's striking is the acceleration—we're seeing both the expected seasonal variation AND an underlying trend that's outpacing historical patterns by significant margins.