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Obspack CH4 time-series result from El Arenosillo (10.0 m)

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2025-04-01–2026-01-21

Deprecated data

Latest version: oJxDAvk6hqUorwwfLGoxfYc9
11676/O9lJ61EQJdNm4YoxTYFfuCAl (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 El Arenosillo (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 the 2026.1 FastTrack update of the Globalview EU data product 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/DWF8-16Z2. 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/Z5HK-WJGY).
European ObsPack
European Obspack compilation of atmospheric carbon dioxide, methane, nitrous oxide and carbon monoxide data from ICOS stations for the period 1972-2026; obspack_466_ICOSFT2026.1_20260123
ICOS RI, Yela, M., Adame, J., Bogeat Sanchez-Piqueras, J., Hurtado, A. (2026). Obspack CH4 time-series result from El Arenosillo (10.0 m), 2025-04-01–2026-01-21, European ObsPack, https://hdl.handle.net/11676/O9lJ61EQJdNm4YoxTYFfuCAl
BibTex 
@misc{https://hdl.handle.net/11676/O9lJ61EQJdNm4YoxTYFfuCAl,
  author={ICOS RI and Yela, Margarita and Adame, José and Bogeat Sanchez-Piqueras, Jose A and Hurtado, Ana Peñato},
  title={Obspack CH4 time-series result from El Arenosillo (10.0 m), 2025-04-01–2026-01-21},
  year={2026},
  keywords={WMO X2004A, atmospheric dry air ch4 mole fraction},
  url={https://hdl.handle.net/11676/O9lJ61EQJdNm4YoxTYFfuCAl},
  publisher={Carbon Portal},
  copyright={http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence},
  pid={11676/O9lJ61EQJdNm4YoxTYFfuCAl}
}
RIS 
TY - DATA
T1 - Obspack CH4 time-series result from El Arenosillo (10.0 m), 2025-04-01–2026-01-21
ID - 11676/O9lJ61EQJdNm4YoxTYFfuCAl
PY - 2026
UR - https://hdl.handle.net/11676/O9lJ61EQJdNm4YoxTYFfuCAl
PB - Carbon Portal
AU - ICOS RI
AU - Yela, Margarita
AU - Adame, José
AU - Bogeat Sanchez-Piqueras, Jose A
AU - Hurtado, Ana Peñato
KW - WMO X2004A
KW - atmospheric dry air ch4 mole fraction
ER -
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ch4_arn_tower-insitu_478_allvalid-10magl.nc
227 KB (231948 bytes)
6592
Obspack CH4 time-series result
2
ICOS CCBY4 Data Licence

Acquisition

El Arenosillo
2025-04-01 00:30:00
2026-01-21 23:30:00
10.0

Production

ICOS RI
Carbon Portal
2026-01-23 10:41:53
Margarita Yela, José Adame, Jose A Bogeat Sanchez-Piqueras, Ana Peñato Hurtado
ICOS_ATC_L1_FAST_TRACK_L1-FastTrack-2026.1_ARN_10.0_CTS_CH4.zip
ICOS_ATC_NRT_ARN_2025-04-01_2026-01-21_10.0_1513_CH4.zip

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

Statistics

8
2

Submission

Carbon Portal
2026-01-23 11:13:09
2026-01-23 11:13:07

Technical information

NetCDF (time series)
R, U, O
plain file
3bd949eb511025d366e18a314d815fb820257a7973c04c584799b16da8434dbe
O9lJ61EQJdNm4YoxTYFfuCAlenlzwExYR5mxbahDTb4
Lat: 37.104, Lon: -6.734, Alt: 42.0 m
El Arenosillo
JSON • RDF/XML • RDF/Turtle • XML (ISO 19115-3:2016)
CH4 ICOS Obspack WMO X2004A atmospheric dry air ch4 mole fraction time series