ICOS ATC CO2 Release from Norunda (32.0 m), 2017-04-01–2026-03-31 icos-sweden-fyszzqdvz41ar77kys1ilbgq-0 Swedish National Data Service Svensk nationell datatjänst ICOS ATC CO2 Release from Norunda (32.0 m), 2017-04-01–2026-03-31 icos-sweden-fyszzqdvz41ar77kys1ilbgq-0 Swedish National Data Service Svensk nationell datatjänst Quality-controlled data on molar fraction of atmospheric CO2 All the time series have been updated due to a Flask and Calibration Laboratory minor internal scale update. The revision of CO2 data has been made to account for the response difference of isotopologue selective analyzers to the differences of d13C and d18O in CO2 of references gases compared to ambient air CO2 (see: Jordan A. (2024): Accounting for CO2 isotopic composition inhomogeneity in standard gases used for isotopologue specific CRDS measurements , https://community.wmo.int/events/22nd-wmoiaea-meeting-carbon-dioxide-other-greenhouse-gases-and-related-tracers-measurement) Lehner, I., Molder, M. (2026). ICOS ATC CO2 Release from Norunda (32.0 m), 2017-04-01–2026-03-31, ICOS RI, https://hdl.handle.net/11676/fYSzzQdvz41Ar77kys1IlBGQ Access to data through an external actor. Åtkomst till data via extern aktör.