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ICOS ATC CO2 Release from Mace Head (6.5 m)

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2023-06-13–2026-03-31
11676/HfSu1dQ-E0EFBwcanNUF2G2m (link)

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)
ICOS
ICOS Atmosphere Release 2026-1 of Level 2 Greenhouse Gas Mole Fractions of CO2, CH4, N2O, CO, meteorology, Radon-222 and 14CO2, and flask samples analysed for CO2, CH4, N2O, CO, H2, SF6 and , delta 13C Co2, delta18OCO2, delta O2N2 and 14C
Lopez, M., Martin, D., Ramonet, M. (2026). ICOS ATC CO2 Release from Mace Head (6.5 m), 2023-06-13–2026-03-31, ICOS RI, https://hdl.handle.net/11676/HfSu1dQ-E0EFBwcanNUF2G2m
BibTex 
@misc{https://hdl.handle.net/11676/HfSu1dQ-E0EFBwcanNUF2G2m,
  author={Lopez, Morgan and Martin, Damien and Ramonet, Michel},
  title={ICOS ATC CO2 Release from Mace Head (6.5 m), 2023-06-13–2026-03-31},
  year={2026},
  url={https://hdl.handle.net/11676/HfSu1dQ-E0EFBwcanNUF2G2m},
  publisher={Atmosphere Thematic Centre},
  copyright={http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence},
  pid={11676/HfSu1dQ-E0EFBwcanNUF2G2m}
}
RIS 
TY - DATA
T1 - ICOS ATC CO2 Release from Mace Head (6.5 m), 2023-06-13–2026-03-31
ID - 11676/HfSu1dQ-E0EFBwcanNUF2G2m
PY - 2026
UR - https://hdl.handle.net/11676/HfSu1dQ-E0EFBwcanNUF2G2m
PB - Atmosphere Thematic Centre
AU - Lopez, Morgan
AU - Martin, Damien
AU - Ramonet, Michel
ER -
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ICOS_ATC_L2_L2-2026.1_MHD_6.5_CTS_CO2.zip
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24539
ICOS ATC CO2 Release
2
ICOS CCBY4 Data Licence

Acquisition

Mace Head
2023-06-13 13:00:00
2026-03-31 23:00:00
RAMCES - G24
CO-CO2-CH4-H2O Picarro Analyzer
6.5

Production

Atmosphere Thematic Centre
Atmosphere Thematic Centre
2026-07-01 14:00:37
ICOS-CAL-FCL

Previewable variables

Name Value type Unit Quantity kind Preview
TIMESTAMP time instant, UTC
co2 CO2 (dry air mole fraction) µmol mol-1 portion Preview
Stdev standard deviation of gas mole fraction µmol mol-1 portion Preview
Flag quality flag
NbPoints number of points cardinal number Preview

Statistics

1
0

Submission

Atmosphere Thematic Centre
2026-07-01 14:00:39
2026-07-01 14:00:37

Technical information

ICOS ATC time series
R, U, O
zip
1df4aed5d43e13410507071a9cd505d86da6e49148298f8d24b26b2ed9c36141
HfSu1dQ+E0EFBwcanNUF2G2m5JFIKY+NJLJrLtnDYUE
Lat: 53.3261, Lon: -9.9036, Alt: 5.0 m
Mace Head
JSON • RDF/XML • RDF/Turtle • XML (ISO 19115-3:2016)
CO2 ICOS dry air mole fraction