Obspack CH4 time-series result from Ivittuut (2.0 m)

This data file contains high accuracy European ObsPack observational timeseries in netCDF format of ambient mole fraction of CH4 in dry air collected at Ivittuut (2.0 m). The measurements were calibrated using the WMO GAW calibration scale WMO CH4 X2004A. Included are (all whenever available) historical PI QCed data, ICOS Level 2 data and ICOS NRT data. It is part of the CH4 European Obspack data product (version 11.0) 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/X5ZG-C3WE. 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/ERAF-JSPW).

@misc{https://hdl.handle.net/11676/9cM7CMWoqpslOgXssNMaw9s7,
  author={ICOS RI and Delmotte, Marc and Ramonet, Michel},
  title={Obspack CH4 time-series result from Ivittuut (2.0 m), 2011-09-19–2014-09-20},
  year={2025},
  keywords={WMO X2004A, atmospheric dry air ch4 mole fraction},
  url={https://hdl.handle.net/11676/9cM7CMWoqpslOgXssNMaw9s7},
  publisher={Carbon Portal},
  copyright={http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence},
  pid={11676/9cM7CMWoqpslOgXssNMaw9s7}
}

TY - DATA
T1 - Obspack CH4 time-series result from Ivittuut (2.0 m), 2011-09-19–2014-09-20
ID - 11676/9cM7CMWoqpslOgXssNMaw9s7
PY - 2025
UR - https://hdl.handle.net/11676/9cM7CMWoqpslOgXssNMaw9s7
PB - Carbon Portal
AU - ICOS RI
AU - Delmotte, Marc
AU - Ramonet, Michel
KW - WMO X2004A
KW - atmospheric dry air ch4 mole fraction
ER - 

ch4_ivi_surface-insitu_11_allvalid.nc

491 KB (502797 bytes)

22290

2

2011-09-19 00:30:00

2014-09-20 23:30:00

2.0

2025-08-18 12:06:25

2025-08-21 13:47:20

2025-08-21 13:47:18

R, U, O

f5c33b08c5a8aa9b253a05ecb0d31ac3db3bb4878b3f11908883987547e537bb

9cM7CMWoqpslOgXssNMaw9s7tIeLPxGQiIOYdUflN7s