This page presents data for atmospheric CO2 measurements by the Scripps CO2 Program at the Mauna Loa Observatory in Hawaii. Starting March 1958, the Scripps Mauna Loa data is the longest-runing, high-precision instrument record for atmospheric CO2.
About the Scripps CO2 Program
The Scripps CO2 program was initiated in 1956 by Charles David Keeling who directed the program until he died in 2005. The program is now operated by Ralph F. Keeling who also runs the Scripps O2 Program that measures atmospheric oxygen and argon. Both programs are based at the Scripps Institution of Oceanography in San Diego (La Jolla) California.
Source Update: May 7, 2015:
CO2Now Documents: Scripps CO2 Data Scripps CO2 Data
Scripps CO2 Program: Scripps Source CO2 Data (CSV)
Scripps CO2 Program Home Page | Scripps CO2 Program
More from the Scripps CO2 Program
Keeling Curve Website | See the most recent daily average for atmospheric CO2
Keeling Curve Twitter | Daily averages for atmospheric CO2 (recent and historical)
NOAA CO2 Data | CO2Now.org