Implemented by the European Commission as part of the Copernicus Programme

Major release (v2.0.0) of the Global Flood Monitoring Product

The latest version of the Copernicus Emergency Management Service’s Global Flood Monitoring (GFM) product - i.e. GFM v2.0.0 – has been released operationally on Monday, 2 January 2023.

GFM v2.0.0 introduces the following major changes to the GFM system and some general software updates:

  • Modification of the GFM’s ensemble flood mapping algorithm to use a consensus-based approach, rather than the original majority-based method.
  • Updating of the GFM’s Sentinel-1 Reference Water Mask - which outlines pixels that are classified as both permanent and seasonal water - based on the two-year reference period of 2020-2021.
  • Updating of the sub-layers underlying the GFM’s Exclusion Mask - which addresses the deleterious effects on Sentinel-1-based flood mapping of static factors including topography and certain land cover types - based on the two-year reference period of 2020-2021.
  • Other updates and improvements related to, for example, Sentinel-1-derived parameters, two of the GFM’s individual flood mapping algorithms (TUW and DLR), and the overall stability of the data processing.

For further information on the Global Flood Monitoring product, including details on the latest release (GFM v2.0.0), please see the dedicated GFM Wiki pages (


By Peter Salamon     Jan. 3, 2023, 6:24 p.m.