CH-OE2 FP2017 (2004-2016)

Flux Products

  • FP2017
    Identifier: ID20170612162243

For an explanation of variables in the output file, please see here: ReddyProc Data Output Format


CH-OE2: Fluxes NEE 2004-2016 (variable: NEEdespiked_WithUstar_f) in g C m-2.

CH-OE2: Mean fluxes of NEE 2004-2016 (variable: NEEdespiked_WithUstar_f) in g C m-2, shown in 20×20 classes of short-wave incoming radiation (SW_IN) and air temperature (TA). The plot was generated from 227952 half-hourly NEE fluxes.




PI flux product (FP) of CH-OE2 ecosystem flux and meteo data over 13 years between 2004-2016, calculated for FLUXNET uploads and CE manuscripts.


Key Stats

  • Complete gap-filled years: 13
  • Available measured values: NEEdespiked_WithUstar_f: 47.8% measured / 52.2% gap-filled (after all quality checks, outlier removal, ustar threshold application and instrument failure)
  • Available data after gap-filling: 227952 half-hourly fluxes (NEEdespiked_WithUstar_f)
  • Range of ustar thresholds: seasonal thresholds ranging between 0.01 m s-1 (2017) and 0.13 m s-1 (winter 2013/14), mean 0.08 m s-1 (2004-2016)
  • Best estimate cumulative carbon uptake (2004-2016, 13 years): 1.60 kg C m-2 (NEEdespiked_WithUstar_f), avg. 0.123 kg C m-2 yr-1
  • Carbon source / sink behavior: The site is a sink for CO2 in 10 of 13 complete years (NEEdespiked_WithUstar_f). This calculation does not take into account C import and export due to management activities.
    • Sink: Highest uptake 433 gC m-2 (2011)
    • Source: Highest emission 833 gC m-2 (2016)


Dataset Production

Info about flux levels can be found here: Flux Levels


  • EddyPro for flux calculations (links to details of Level-1 fluxes are given below for each year).
  • ReddyProc for ustar threshold detection, MDS gap-filliing and partitioning.
  • R for other processing steps, e.g. merging


2004-2016: R350-IRGA75



Known Issues

  • VPD 2008 has offset.



  • Emmel, C., Winkler, A., Hörtnagl, L., Revill, A., Ammann, C., D’Odorico, P., Buchmann, N., & Eugster, W. (2018). Integrated management of a Swiss cropland is not sufficient to preserve its soil carbon pool in the long term. Biogeosciences, 15(17), 5377–5393.

Last Updated on 19 Feb 2024 21:43