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