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Obspack CH4 time-series result from Mace Head (10.0 m)

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1987-01-23–2026-07-06
11676/mmaoCygCTvm_QIMdpelvLP1P (link)
This data file contains high accuracy European ObsPack observational timeseries in netCDF format of ambient mole fraction of CH4 in dry air collected at Mace Head (10.0 m). The measurements were calibrated using the WMO GAW calibration scale WMO X2004A. Included are (all whenever available) historical PI QCed data, ICOS Level 2 data, ICOS FastTrack data and ICOS NRT data. It is part of a release of the CH4 European Obspack data product (version 12.1), and is intended for use in carbon cycle inverse modeling, model evaluation, and satellite validation studies. Metadata for the full CH4 product release are available at https://commons.datacite.org/doi.org/10.18160/K54N-TNWH. Please also visit http://www.gml.noaa.gov/ccgg/obspack/ for more information. If you use these data in your research, please consider citing the full ObsPack release that this file is part of (https://commons.datacite.org/doi.org/10.18160/MD10-E1BJ).
Lopez, M., Martin, D., Ramonet, M. (2026). Obspack CH4 time-series result from Mace Head (10.0 m), 1987-01-23–2026-07-06, European ObsPack, https://hdl.handle.net/11676/mmaoCygCTvm_QIMdpelvLP1P
BibTex
@misc{https://hdl.handle.net/11676/mmaoCygCTvm_QIMdpelvLP1P,
  author={Lopez, Morgan and Martin, Damien and Ramonet, Michel},
  title={Obspack CH4 time-series result from Mace Head (10.0 m), 1987-01-23–2026-07-06},
  year={2026},
  keywords={WMO X2004A, atmospheric dry air ch4 mole fraction},
  url={https://hdl.handle.net/11676/mmaoCygCTvm_QIMdpelvLP1P},
  publisher={Carbon Portal},
  copyright={http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence},
  pid={11676/mmaoCygCTvm_QIMdpelvLP1P}
}
RIS
TY - DATA
T1 - Obspack CH4 time-series result from Mace Head (10.0 m), 1987-01-23–2026-07-06
ID - 11676/mmaoCygCTvm_QIMdpelvLP1P
PY - 2026
UR - https://hdl.handle.net/11676/mmaoCygCTvm_QIMdpelvLP1P
PB - Carbon Portal
AU - Lopez, Morgan
AU - Martin, Damien
AU - Ramonet, Michel
KW - WMO X2004A
KW - atmospheric dry air ch4 mole fraction
ER - 
ch4_mhd_tower-insitu_11_10magl.nc
3 MB (2873647 bytes)
203554
2

Acquisition

1987-01-23 13:30:00
2026-07-06 23:30:00
10.0

Production

2026-08-26 07:03:12

Previewable variables

Name Value type Unit Quantity kind Preview
time time instant, UTC
qc_flag quality flag
icos_datalevel data level (Obspack) natural number Preview
value_std_dev standard deviation of gas mole fraction a.u. portion Preview
icos_LTR ICOS mole fraction uncertainty metrics mol mol-1 portion Preview
icos_STTB ICOS mole fraction uncertainty metrics mol mol-1 portion Preview
icos_SMR ICOS mole fraction uncertainty metrics mol mol-1 portion Preview
value CH4 (dry air mole fraction) mol mol-1 portion Preview
nvalue number of points cardinal number Preview

Statistics

1
0

Submission

2026-08-26 09:51:11
2026-08-26 09:51:09

Technical information

R, U, O
9a66a80b28024ef9bf40831da5e96f2cfd4f6e0f91e9811a89da0e0964379aa2
mmaoCygCTvm/QIMdpelvLP1Pbg+R6YEaidoOCWQ3mqI
Lat: 53.3261, Lon: -9.9036, Alt: 5.0 m
CH4 ICOS Obspack WMO X2004A atmospheric dry air ch4 mole fraction time series