Based on the annual report from NOAA’s Global Monitoring Lab, global average atmospheric carbon dioxide was 417.06 parts per million (“ppm” for short) in 2022, setting a new record high https://perma.cc/Z4YT-CRYG Human activities have raised the atmosphere’s carbon dioxide content by 50% in less than 200 years https://perma.cc/R7UX-CHNY The concentration of carbon dioxide in Earth’s atmosphere is currently at nearly 412 parts per million (ppm) and rising. This represents a 47 percent increase since the beginning of the Industrial Age, when the concentration was near 280 ppm, and an 11 percent increase since 2000, when it was near 370 ppm https://perma.cc/T96F-XR33 In 2013, CO2 levels surpassed 400 ppm for the first time in recorded history https://perma.cc/2DAE-2AKW Sources: Global Warming and Climate change, causes, impacts and mitigation, The Relationship between Atmospheric Carbon Dioxide Concentration and Global Temperature for the Last 425 Million Years, Global Environmental Forecast and Roadmap Based on 420 kY of Paleoclimatology