This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionGlobally averaged atmospheric CH4 and its annual growth rate GATM.png
English: "Globally averaged atmospheric CH4 (ppb) (a) and its annual growth rate GATM (ppb yr−1) (b) from four measurement programmes, National Oceanic and Atmospheric Administration (NOAA), Advanced Global Atmospheric Gases Experiment (AGAGE), Commonwealth Scientific and Industrial Research Organisation (CSIRO), and University of California, Irvine (UCI). Detailed descriptions of methods are given in the supplementary material of Kirschke et al. (2013)."
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue
Captions
Globally averaged atmospheric CH4 (ppb) (a) and its annual growth rate GATM (ppb yr−1) (b)
Uploaded a work by See the authors of the study; "Detailed descriptions of methods are given in the supplementary material of Kirschke et al. (2013)." from https://essd.copernicus.org/articles/12/1561/2020/ with UploadWizard