Trends in Atmospheric Carbon Dioxide

keeling curve


Charles David Keeling began measuring atmospheric carbon dioxide (CO2) in 1958 at the Mauna Loa observatory on the big island of Hawaii.  This graph shows atmospheric carbon dioxide concentration in parts per million (ppm) by volume from 1958 to 2016. Worksheet also available in Spanish.

32 other people liked this

By downloading, you agree to the permissions to use this file.