Flux Processing Chain
Update currently in progress… (Sep 2020)
The default SFN processing chain from raw data to final flux products.
Sequence
- 0.1 Meteo Parameters
- Collection of required meteo data (6): TA, PA, RH, SW_IN, LW_IN, PPFD_IN
- 1.1 Flux calculations
- SFN flux level: Level-1
- Software: EddyPro
- 2.1 QC Flag Expansion
- SFN flux level: Level-2
- Calculation of overall processing QC flag
QCF
for fluxes - Application of flag: retain values where
QCF
< 2 - Software: Amp
- …more infos soon…
- 3.1 Storage correction
- SFN flux level: Level-3
- Calculation by addition: flux + storage
- Software: Amp or ReddyProc
- 3.2 Spike detection and removal
- SFN flux level: Level-3
- Software: Amp or ReddyProc
- 3.3 u* correction
- SFN flux level: Level-3
- Threshold detection using NEE
- Retain flux values > threshold
- Done for NEE
- The NEE threshold is also applied to N2O and CH4, but no threshold is applied to water fluxes (H2O, LE, ET)
- Software: ReddyProc, planned for Amp
- 4.1 Gap-filling
- SFN flux level: Level-4
- Default method for CO2, water and energy fluxes: MDS (using SW_IN, TA and VPD)
- Method for N2O and CH4: to be decided
- Software: Amp or ReddyProc
- 4.2 Partitioning
- SFN flux level: Level-4
- Calculate GPP and RECO from NEE
- Software: ReddyProc, planned for Amp