Observed Global CO2 Fluxes
Description
Blue Curve: CO2 rate of change based on Mauna Loa Record.
Black Curve: CO2 rate of change based on the Antarctic ice core record from Law Dome before 1958 (Macfarling Meure, C. et al., 2006: Law Dome CO2, CH4 and N2O ice core records extended to 2000 years BP. Geophysical Research Letters, 33.) and a seasonally detrended arithmetic average of monthly air measurements from Mauna Loa and the South Pole from the Scripps CO2 program after and including 1958. The records were combined without adjustment. Ice core data are rejected after 1958 which overlap direct measurements. The ice core data are interpolated to monthly resolution using a spline with a stiffness of 0.8. The curve is smoothed to suppress short-term interannual variability, for example, due to El Nino events.
Red Curve: Fossil fuel CO2 emissions.
Mauna Loa and South Pole
Data from Scripps CO2 Program.
Usage Restrictions
Scripps CO2 program data and graphics on scrippsco2.ucsd.edu are licensed under a CC BY license, Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which clarifies appropriate uses and requirements, including that credit be given to the Scripps Institution of Oceanography at UC San Diego. Some products from this site incorporate data from sources external to the Scripps CO2 program, as indicated. Additional credit must be given for these products, as appropriate for that source.
Ethical usage may also require disclosing intentions at early stages to avoid duplicating ongoing studies at Scripps or elsewhere. For applications supporting peer-reviewed scientific publications, coauthorship may sometimes be appropriate. An example would be if an important result or conclusion depends on this product, such as the first account of a previously unreported phenomenon.
Please direct queries to Ralph Keeling (rkeeling@ucsd.edu)