This publication is a Technical Report on the Copernicus Emergency Management Service’s Global Flood Monitoring (GFM) product, which is operated by EODC (Earth Observation Data Centre for Water Resources Monitoring GmbH) in collaboration with the JRC (Joint Research Centre), the European Commission’s science and knowledge service. The aim of the report is to describe the annual product and service quality assessment of the operational GFM product, which has been performed and reported on a quarterly basis during 2023. Specifically, the report presents and discusses the 2023 quality assessment results for: (a) the two main GFM output layers, i.e. Observed Flood Extent and Reference Water Mask; (b) the GFM processed archive of worldwide observed floods and water bodies; (c) the GFM product timeliness, service availability and user uptake; and (d) the GFM Exclusion Mask. The validation of the GFM Observed Flood Extent and Reference Water Mask was carried out based on 12 selected Use Cases of worldwide flood events, five of which occurred in 2023, and seven of which occurred during 2017-2021, which are included in the GFM archive of worldwide observed flood events and water extent. In addition to the 12 Use Cases, the 2023 GFM quality assessment also includes a qualitative assessment of the GFM results for the flood disaster in southern Ukraine, following the destruction of the Kakhovka dam on 6 June 2023.

SEEWALD Michaela;  GRUBER Christian;  INNERBICHLER Florian;  PASIK Adam;  DUFFY Camran;  RIFFLER Michael;  REIMER Christoph;  STACHL Tobias;  KIDD Richard;  MCCORMICK Niall;  SALAMON Peter; 

2024-08-05

Publications Office of the European Union

JRC138200

978-92-68-20049-0 (online),   

1831-9424 (online),   

EUR 32022,    OP KJ-NA-32-022-EN-N (online),   

https://publications.jrc.ec.europa.eu/repository/handle/JRC138200,   

10.2760/41122 (online),