ICOS

Obspack CH4 time-series result from Helgoland (110.0 m)

Download
2020-08-08–2025-10-02
11676/krAo9sM37R-Al5KhCuTl7KH0 (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 Helgoland (110.0 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 2025.3 FastTrack update of the Globalview EU CH4 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/10.18160/3TB5-D6TM. 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/10.18160/46ST-DEVK).
ICOS RI, Kubistin, D., Plaß-Dülmer, C., Arnold, S., Kneuer, T., Lindauer, M., Müller-Williams, J., Schumacher, M., Zwerschke, E., Weyrauch, D. (2025). Obspack CH4 time-series result from Helgoland (110.0 m), 2020-08-08–2025-10-02, European ObsPack, https://hdl.handle.net/11676/krAo9sM37R-Al5KhCuTl7KH0
BibTex
@misc{https://hdl.handle.net/11676/krAo9sM37R-Al5KhCuTl7KH0,
  author={ICOS RI and Kubistin, Dagmar and Plaß-Dülmer, Christian and Arnold, Sabrina and Kneuer, Tobias and Lindauer, Matthias and Müller-Williams, Jennifer and Schumacher, Marcus and Zwerschke, Elena and Weyrauch, Dietmar},
  title={Obspack CH4 time-series result from Helgoland (110.0 m), 2020-08-08–2025-10-02},
  year={2025},
  keywords={WMO X2004A, atmospheric dry air ch4 mole fraction},
  url={https://hdl.handle.net/11676/krAo9sM37R-Al5KhCuTl7KH0},
  publisher={Carbon Portal},
  copyright={http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence},
  pid={11676/krAo9sM37R-Al5KhCuTl7KH0}
}
RIS
TY - DATA
T1 - Obspack CH4 time-series result from Helgoland (110.0 m), 2020-08-08–2025-10-02
ID - 11676/krAo9sM37R-Al5KhCuTl7KH0
PY - 2025
UR - https://hdl.handle.net/11676/krAo9sM37R-Al5KhCuTl7KH0
PB - Carbon Portal
AU - ICOS RI
AU - Kubistin, Dagmar
AU - Plaß-Dülmer, Christian
AU - Arnold, Sabrina
AU - Kneuer, Tobias
AU - Lindauer, Matthias
AU - Müller-Williams, Jennifer
AU - Schumacher, Marcus
AU - Zwerschke, Elena
AU - Weyrauch, Dietmar
KW - WMO X2004A
KW - atmospheric dry air ch4 mole fraction
ER - 
ch4_hel_surface-insitu_147_allvalid.nc
959 KB (982234 bytes)
43130
2

Acquisition

2020-08-08 00:30:00
2025-10-02 23:30:00
110.0

Production

2025-10-03 11:12:11

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

6
0

Submission

2025-10-03 12:00:56
2025-10-03 12:00:52

Technical information

R, U, O
92b028f6c337ed1f809792a10ae4e5eca1f47d3765165c4951ac13f03b52317d
krAo9sM37R+Al5KhCuTl7KH0fTdlFlxJUawT8DtSMX0
Lat: 54.1804, Lon: 7.8833, Alt: 43.0 m
CH4 ICOS Obspack WMO X2004A atmospheric dry air ch4 mole fraction time series