Obspack CH4 time-series result from Norunda (100.0 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 Norunda (100.0 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).

@misc{https://hdl.handle.net/11676/gc_RZMiBBWIgyR_sjKtJcN2j,
  author={ICOS RI and Lehner, Irene and Molder, Meelis},
  title={Obspack CH4 time-series result from Norunda (100.0 m), 2017-01-31–2025-10-02},
  year={2025},
  keywords={WMO X2004A, atmospheric dry air ch4 mole fraction},
  url={https://hdl.handle.net/11676/gc_RZMiBBWIgyR_sjKtJcN2j},
  publisher={Carbon Portal},
  copyright={http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence},
  pid={11676/gc_RZMiBBWIgyR_sjKtJcN2j}
}

TY - DATA
T1 - Obspack CH4 time-series result from Norunda (100.0 m), 2017-01-31–2025-10-02
ID - 11676/gc_RZMiBBWIgyR_sjKtJcN2j
PY - 2025
UR - https://hdl.handle.net/11676/gc_RZMiBBWIgyR_sjKtJcN2j
PB - Carbon Portal
AU - ICOS RI
AU - Lehner, Irene
AU - Molder, Meelis
KW - WMO X2004A
KW - atmospheric dry air ch4 mole fraction
ER - 

ch4_nor_tower-insitu_424_allvalid-100magl.nc

1 MB (1561374 bytes)

74504

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2017-01-31 00:30:00

2025-10-02 23:30:00

100.0

2025-10-03 11:14:26

2025-10-03 12:04:12

2025-10-03 12:04:07

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81cfd164c881056220c91fec8cab4970dda357226ad321299ca4357df596cb44

gc/RZMiBBWIgyR/sjKtJcN2jVyJq0yEpnKQ1ffWWy0Q