NOAA GML Mauna Loa CO2 Trends
NOAA GML Mauna Loa CO2 Trends
NOAA's Global Monitoring Laboratory (GML) publishes Mauna Loa Observatory atmospheric carbon dioxide records (monthly, annual, weekly and daily means and annual growth rates) as text and CSV files.
Required Attribution:
GML asks for relevant citation text in publications. The trends page's "How to reference content from this page" line credits NOAA/GML (gml.noaa.gov/ccgg/trends/) and the Scripps Institution of Oceanography (scrippsco2.ucsd.edu/).
Coverage
Mauna Loa atmospheric CO2 from March 1958, per the monthly file; its header says March 1958 to April 1974 data come from the Scripps Institution of Oceanography, and that after the Mauna Loa eruption, observations from December 2022 to July 4, 2023 come from a site at the Maunakea Observatories. The data page says: "These values are subject to change depending on quality control checks of the measured data, but any revisions are expected to be small." Update frequency: Not stated.
Verdict
Text and CSV files of NOAA GML's Mauna Loa CO2 records. Licensed Custom (NOAA GML data use statement): the data files' "USE OF NOAA GML DATA" header says (line-start # comment markers omitted): "These data are made freely available to the public and the scientific community in the belief that their wide dissemination will lead to greater understanding and new scientific insights. To ensure that GML receives fair credit for their work please include relevant citation text in publications." Rate limits: Not stated (static files). Signal Lab links only.
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