ScienceMauna Loa CO2 Measurements Show Rise from 315 to 420 ppm Since 1958
Since 1958, instruments atop Mauna Loa volcano in Hawaii have measured atmospheric carbon dioxide almost daily. Despite some interruptions, the data record shows CO2 levels rising from about 315 parts per million to over 420 parts per million, making it one of climate science's most iconic and continuous datasets.
Spacedaily·


