I am looking for a regular (daily, monthly) Level 3 source of present day CO2 in the atmosphere. I have looked through NASA AIRS and NASA GEOS data products and could not find data for 2020. I did find contemporary data through Copernicus, but it is too low resolution to use for a global map of carbon dioxide in the atmosphere, which is the goal.

I also researched the data sets at JPL's CO2 Virtual Science Data Environment and those with global data were outdated, except for the OCO-2 data, but it was too sparse and low resolution on a global level to use for these purposes.

3 Answers 3


Another option is


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direct link to co2: https://data.giss.nasa.gov/modelforce/ghgases/CMIP5/CO2_OBS_1850-2005.lpl

another direct link to co2: https://data.giss.nasa.gov/modelforce/ghgases/Fig1A.ext.txt


One option may be the monthly CO2 data from Mauna Loa


data goes back to 1958 and seems to be actively updated:


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Another option has data going back to year 0 and up to 2014, sourced by ETH-Zürich:


Datasets are compiled by the Institute for Atmospheric and Climate Science (IAC) at Eidgenössische Technische Hochschule in Zürich, Switzerland.

A full data page is here:


including Terabyte (!) sized datasets

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