Post by UC San Diego

Carbon dioxide levels have reached a new milestone and it’s part of a long-term trend scientists have tracked for decades. Researchers at UC San Diego’s Scripps Institution of Oceanography report that atmospheric CO₂ hit 432 ppm in May 2026, continuing a steady increase that shapes global climate patterns. This foundational dataset, measured at Mauna Loa Observatory, informs international research and helps guide decisions on climate action. Rising CO₂ levels are linked to extreme weather, ocean acidification and broader environmental change. Understanding these trends is critical to building a more resilient future. 🔗 Link in comments to read more. #ClimateScience #ClimateChange #UCSanDiego