The following is a description of the latest operational release of GloFAS (v4.Xv5) launched on DAY MONTH 2026. For an overview of other GloFAS releases, please see: GloFAS versioning system.
Summary
GloFAS v4.X v5 introduces several minor major changes to the system, including:
- major improvements to the open-source hydrological model:
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- OS LISFLOOD v5.0.0
- improved input dataset, with major revisions to some of the 0.05 degrees resolution input maps (e.g. soil hydraulic properties), and to input datasets for lakes and reservoirs
- a new hydrological model calibration at 5379 in-situ gauging stations. Furthermore, a parameter regionalisation was performed to estimate the parameters of catchments for which in situ discharge observations were not available.
- new return period thresholds and snow water/soil moisture anomaly maps based on a climatology from 1980 – 2025.
- GloFAS v5 reanalysis dataset is available at the CEMS Early Warning Data Store.
- A
- B C
This upgrade of GloFAS has no impact large impacts on the GloFAS modelling results.
Technical details
| Release Date | 2026-XX-XX |
|---|---|
| Pre-release date (available onstage platform) | n/a |
| In test suite | n/a |
| GloFAS internal number | 005 |
| Archiving of data | ECFS, MARS, CDS |
| Reference climatology (for thresholds/ anomalies) | 19791980-01-01 to 20222025-12-31 |
| GloFAS Historical | 19791980-01-01 to near present |
| Reforecasts | From 2003-03-27 to real time |
| Horizontal projection | EPSG4326 |
| Horizontal resolution | 0.05 x 0.05° |
| Temporal resolution | Daily |
...