Follow the Data

The final step is to ensure that the O₂ measurements are consistent over time and to provide the results and various cross checks on quality. This requires that we actively maintain databases for samples and calibration gases.

Finally, Aerial and Frank get together in the O₂ lab, where we analyze the O₂ content of Aerial’s air sample. We can then report the O₂ concentration on the Scripps O2 scale. Aerial and Frank combine to add part of a data point (red circle) to the O₂ record at Cold Bay, Alaska.

The Keeling group atmospheric O₂ calibration is the global standard, and we share it with other research groups making oxygen measurement around the world by providing calibration gases and data comparisons. Pictured here is Mace Head station on the west coast of Ireland.

Finally, the O₂ data are combined with CO₂ data to make estimates of hemispheric and global trends which enable estimates of the strength of the sinks for carbon dioxide in the land and oceans. (link to IPCC 2014).