This data package contains high accuracy CH4 dry air mole fractions from 66 ICOS and non-ICOS European observatories at in total 143 observation levels, collected by the ICOS Atmosphere Thematic Centre (ATC) and provided by the station contributors. The package is part of the European Obspack data product, released in 2023 and is intended for use in carbon cycle inverse modeling, model evaluation, and satellite validation 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/10.18160/9CQ4-W69K Please visit http://www.gml.noaa.gov/ccgg/obspack/ for more information.
