Building a simple model in Prophet
The longest record of direct measurements of CO2 in the atmosphere was started in March 1958 by Charles David Keeling of the Scripps Institution of Oceanography. Keeling was based in La Jolla, California, but had received permission from the National Oceanic and Atmospheric Administration (NOAA) to use their facility located two miles above sea level on the northern slope of Mauna Loa, a volcano on the island of Hawaii, to collect carbon dioxide samples. At that elevation, Keeling's measurements would be unaffected by local releases of CO2, such as from nearby factories.
In 1961, Keeling published the data he had collected thus far, establishing that there was strong seasonal variation in CO2 levels and that they were rising steadily, a trend that later became known as the Keeling Curve. By May 1974, the NOAA had begun their own parallel measurements and have continued since then. The Keeling Curve graph is as follows: