While the famous #keeling curve record of atmospheric #CO2 is currently interrupted because of #MaunaLoa eruption, listen how Scientists Measure Carbon Dioxide in the Air.
In the linked video, #Scripps scientist Ralph Keeling, the son of Charles David Keeling who started to develop the CO2 measurement at Mauna Loa observatory, explains how the measurement is done. The keeling curve is named from C.D. Keeling.