The following is a description of EFAS v4.5. For an overview of other EFAS releases, please see: EFAS versioning system
Summary
EFAS v4.5 introduces minor changes to the system, as well as some general bug fixes. Here is a summary of the main changes:
- Post-processing updates:
- Increase temporal resolution of bias-adjusted method (real-time hydrograph) from 24 hours to 6 hours.
- Recalibration of all 1608 station models using the most up-to-date data available (1420 at 6-hourly, 188 at daily).
- River discharge observations are now obtained from a new hydrological database set up by EFAS Hydrological Data Collection Centre (HYDRO)
- Detailed documentation on the post-processing method and post-processing product (Real-time hydrograph) can be found on the dedicated wiki pages, following the release.
Introduction of TAMIR layers:
Four new hourly updated flash flood products developed during the TAMIR project are now available:
Flash flood impact forecasts summarised at the catchment level for four lead time aggregation windows: 0-6h, 07-24h, 25 - 48h, and 49 - 120h
An animated layer showing flash flood impact forecasts over the river network at each timestep for lead times from 0-120h
Accumulated precipitation estimates for the past 24h (updated twice per day)
An animated layer of the 80th percentile of ensemble rainfall forecasted at each timestep for lead times from 0-120h
- Detailed documentation on the TAMIR layers can be found on the dedicated TAMIR wiki pages, following the release.
Technical details
Release date | 2022-09-13 12UTC |
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In test suite | 2022-07-19 12UTC |
EFAS internal release | 019 |
Archiving of data | ECFS, MARS, CDS |
Reference climatology (for thresholds/ anomalies) | 1991-01-01 to 2017-12-31 |
EFAS Historical | 1991-01-01 to near present |
Horizontal projection | ETRS89 Lambert Azimuthal Equal Area Coordinate Reference System (ETRS-LAEA) |
Horizontal resolution | 5 x 5 km 1 x 1 km for TAMIR products |
Temporal resolution | 6-hourly for medium range-monthly products, 24-hourly for seasonal 1-hourly for TAMIR products for first 6 hours lead time, 6-hourly thereafter |