Obspack compilation of atmospheric oxygen and carbon dioxide data from ICOS and non-ICOS stations for the period 1989-2025

This data package contains high accuracy CO2 dry air mole fractions and deltaO2N2 ratios in dry air from 34 ICOS and non-ICOS observatories. The package is the first release of the multispecies O2/CO2 Obspack data product (version 1.0), and is intended for use in carbon cycle research, e.g., inverse modeling or data comparison studies. Please report errors and send comments regarding this product to the ObsPack originators. Please read carefully the ObsPack Fair Use statement and cite appropriately. Metadata for this product are available at https://commons.datacite.org/doi.org/10.18160/M3VW-DRM5. Please visit http://www.gml.noaa.gov/ccgg/obspack/ for more information.