Bring your processed flux data.
FluxGapFill maps the rest.
Start from computed fluxes or half-hourly/hourly environmental data—not raw high-frequency sonic/IRGA signals. Phase 2 adds configurable QC, two MDS variants, enhanced RF/XGBoost candidates, realistic blocked validation, empirical uncertainty calibration and adaptive gap filling.
1. Project data
Primary processed flux/environmental file plus optional supplemental weather data.
2. Project policy
Time handling is explicit because logger conventions differ.
Verify before processing
FluxGapFill proposes mappings and units but does not silently assume unknown fields. Correct any suggestion here before loading the project.
Primary file
Not inspected
| Role | Source column | Unit | Detection |
|---|---|---|---|
| Inspect a primary file first. | |||
Supplemental file
Optional
| Role | Source column | Unit | Detection |
|---|---|---|---|
| No supplemental file selected. | |||
Input preview
First records only. Preview does not alter the file.
| Inspect a file to preview it. |
Quality, completeness and gap structure
Standardized midpoint grid after mapping, unit normalization, QC screening and optional supplemental alignment.
Measured fluxes
Downsampled only for visualization; calculations use every record.
Project details
Predictor availability
Variables visible to current/future analysis modules.
| Variable | Complete | N |
|---|
Screen transparently before model training
Phase-1 input/QC screening remains intact. This additional layer can reject implausible ranges and isolated robust spikes without altering the original standardized copy.
QC policy
Conservative defaults; every rejection receives an explicit reason flag.
QC summary
Upstream input/QC rejection plus Phase-2 screening remain distinguishable.
QC audit
No rejected value is silently removed; the full provenance export retains pre-QC values and flags.
| Variable | Before | Range reject | Spike reject | After | Missing after |
|---|---|---|---|---|---|
| Load a project and apply Phase-2 QC. | |||||
Use what is ready. Add data where needed. Skip the rest.
Each analysis module checks required variables independently, so missing footprint or carbon information never blocks gap filling or ET work.
Optional site information
Needed by selected advanced modules; leave blank if not applicable.
How optional modules behave
Compare established MDS with enhanced machine learning
Validation hides contiguous calendar outages and scores only observations that existed before masking. This is retrospective reconstruction validation—not forecasting.
Blocked validation design
Use multiple windows for stronger site-specific evidence. Long runs can take several minutes in the browser.
Adaptive final fill
The best validated method is selected by target and nearest tested gap duration. You can also force one candidate.
Overall blocked-validation performance
RMSE, MAE, bias, R² and prediction coverage across the hidden calendar windows.
| Flux | Gap | Model | N | RMSE | MAE | Bias | R² | Windows |
|---|---|---|---|---|---|---|---|---|
| Run validation to populate this table. | ||||||||
Day / night diagnostics
Day/night basis appears after validation.
| Flux | Gap | Model | Segment | N | RMSE | Bias |
|---|---|---|---|---|---|---|
| Run validation first. | ||||||
Selected model by duration
Site-specific adaptive rules from the validation results.
Seasonal diagnostics
DJF, MAM, JJA and SON are reported when a held-out window contains observations from that season.
| Flux | Gap | Model | Season | N | RMSE | MAE | Bias | R² |
|---|---|---|---|---|---|---|---|---|
| Run validation first. | ||||||||
Gap-filled fluxes with provenance
Measured observations remain unchanged; reconstructed values retain method labels, gap class, MDS donor diagnostics and empirical blocked-validation uncertainty when available.
Final LE and H
Method provenance
Daily ET from final LE
Temperature-dependent latent heat of vaporization.
Take the complete audit trail with the data.
All exports are generated locally in the browser. No result file is uploaded to FluxGapFill.