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Yearly CO2 Concentrations (Raster)

Co2 Point Data


You are viewing a deprecated / legacy version of our website. Please visit our new site at for the most recent version of this dataset.


How to cite our data: we recommend that users cite pertinent information below. A citation should contain the creators' (our) names and the creation and/or most-recent-modification date, as well as the title and URL associated with the data set. An example of how to cite this dataset is: 

Goodman, S., Runfola, D.M. (2019), Global Carbon Dioxide Concentration: 2015-2018. Accessed On: April 25th, 2019.
Data Description:
The raster files available for download here are modeled based on daily global measures of CO2 concentration available from NASA JPL's Orbiting Carbon Observatory-2 (OCO2; see figure 1 for an example of coverage). CO2 concentration is defined as the average concentration of carbon dioxide in a column of dry air extending from Earth’s surface to the top of the atmosphere. The daily measures from OCO2 are concatenated for an entire year and then aggregated to a regular global 10km grid. Points flagged in the OCO2 data as lower quality are omitted. The resulting grid is then interpolated using linear interpolation to fill gaps, and produce a final yearly raster surface. Units of the raster are the CO2 concentration in parts per million (ppm). 
The underlying data were produced by the OCO-2 project at the Jet Propulsion Laboratory, California Institute of Technology, and obtained from the OCO-2 data archive maintained at the NASA Goddard Earth Science Data and Information Services Center.
Replication code is available online:
NASA Jet Propulsion Laborator
OCO-2 Lite Version 9
O'Dell, C. W., Connor, B., Bösch, H., O'Brien, D., Frankenberg, C., Castano, R., Christi, M., Eldering, D., Fisher, B., Gunson, M., McDuffie, J., Miller, C. E., Natraj, V., Oyafuso, F., Polonsky, I., Smyth, M., Taylor, T., Toon, G. C., Wennberg, P. O., and Wunch, D.: The ACOS CO2 retrieval algorithm – Part 1: Description and validation against synthetic observations, Atmos. Meas. Tech., 5, 99-121,, 2012.