Short Report – QA/QC Meeting Apr 2021

Meeting Date: 15 Apr 2021


LH, WE, MB, AS, IF, MG, RM, TB, PM, LS, GA, BP (12)



  • If you are (Tech-)SRP, please attend QA/QC meetings or tell LH if you can’t, needed for planning of the meetings.
  • SRP & Tech-SRP: please prepare short statement about your site and send to to LH (max. 2 sentences)
  • The purpose of QA/QC meetings is to check on current, incoming data. SRPs choose specific issues we should look at together and discuss in the group. Fluxes are checked if the respective SRP wishes to do so.
  • List of QA/QC Meeting dates: QA/QC Meetings 2021


Talking Points

  • Checking recent fluxes from our stations
  • This time we checked several fluxes after applying the quality flag calculated with DIIVE:
    • DIIVE combines the info about flux quality that is contained in the EddyPro *full_output* file into one single flag:QCF = quality control flag
    • Here is an example how this works for the CO2 flux @CH-FRU:

      CH-FRU 2021: Example for the quality check of the CO2 flux along with settings, done in DIIVE

  • Note the example checks for CH-FRU shown below.


 Site Reports



CH-AWS 2021: CO2 flux during snow cover.



SRP (IF): CO2 and H2O, without and with QCF flag applied. CO2 loses another 30% of the data (QCF=2) while for H2O it is 20% (QCF=2). N2O fluxes with QCF flag applied.




SRP (MG): CO2 and H2O (absolute flux limits applied as the inly QC criterion)




SRP (LH): Recent fluxes of CO2, LE and H. Also shown are the wind direction alongside CO2 flux and the AGC value from the open-path IRGA.



SRP (RM): CO2, H2O, CH4 and N2O fluxes after QCF were applied.



SRP (AS): CO2 and H2O fluxes: heatmaps



SRP (AS): CO2 and H2O fluxes: heatmaps



SRP (RM): CO2 and H2O fluxes after QCF were applied.


Last Updated on 17 Apr 2021 11:10