Mauna Loa Seas Adj Fossil Fuel Trend
Description
Black Curve: Seasonally adjusted monthly average atmospheric carbon dioxide concentration versus time at Mauna Loa Observatory, Hawaii (20 °N, 156 °W) where CO2 concentration is in parts per million in the mole fraction (p.p.m.). The line through the dots is a spline fit to the data.
Red Curve: Fossil fuel trend of a fixed fraction (56%) of the cumulative industrial emissions of CO2 from fossil fuel combustion and cement production. This fraction was calculated from a least squares regression fit of the fossil fuel trend to the observation record. This fit is the equation a + b*f where a is the intercept of 296, and b is the slope of 56%.
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)