Experiments with co2 -in-air reference gases in high-pressure aluminum cylinders data

For long term monitoring of CO2 in the atmosphere it is crucial that standard reference gas mixtures stored in high pressure aluminum cylinders, used to calibrate global measurements, remain stable over their whole time of use. This database contains 60 CO2 in whole air measurements of high pressure aluminum cylinders that were completely drained to determine the stability of the CO2 mole fraction over their lifetime. If temperature measurements of the regulator and the cylinder body are available they were added to the data set. A detailed explanation about the experiments and the data can be found in the corresponding publication.