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Global prediction of extreme floods in ungauged watersheds
Nearing, G.; Cohen, D.; Dube, V.; Gauch, M.; Gilon, O.; Harrigan, S.; Hassidim, A.; Klotz, D.; Kratzert, F.; Metzger, A.; Nevo, S.; Pappenberger, F.; Prudhomme, C.; Shalev, G.; Shenzis, S.; Tekalign, T.Y.; Weitzner, D.; Matias, Y. (2024). Global prediction of extreme floods in ungauged watersheds. Nature (Lond.) 627(8004): 559-563. https://dx.doi.org/10.1038/s41586-024-07145-1
In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687, meer
|  |
| Auteurs | | Top |
- Nearing, G.
- Cohen, D.
- Dube, V.
- Gauch, M.
- Gilon, O.
- Harrigan, S.
|
- Hassidim, A.
- Klotz, D.
- Kratzert, F.
- Metzger, A.
- Nevo, S.
- Pappenberger, F.
|
- Prudhomme, C.
- Shalev, G.
- Shenzis, S.
- Tekalign, T.Y.
- Weitzner, D.
- Matias, Y.
|
| Abstract |
Floods are one of the most common natural disasters, with a disproportionate impact in developing countries that often lack dense streamflow gauge networks. Accurate and timely warnings are critical for mitigating flood risks, but hydrological simulation models typically must be calibrated to long data records in each watershed. Here we show that artificial intelligence-based forecasting achieves reliability in predicting extreme riverine events in ungauged watersheds at up to a five-day lead time that is similar to or better than the reliability of nowcasts (zero-day lead time) from a current state-of-the-art global modelling system (the Copernicus Emergency Management Service Global Flood Awareness System). In addition, we achieve accuracies over five-year return period events that are similar to or better than current accuracies over one-year return period events. This means that artificial intelligence can provide flood warnings earlier and over larger and more impactful events in ungauged basins. The model developed here was incorporated into an operational early warning system that produces publicly available (free and open) forecasts in real time in over 80 countries. This work highlights a need for increasing the availability of hydrological data to continue to improve global access to reliable flood warnings. |
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