In a recent paper published in Water Resources Research, Professor Bates assessed the methodologies underpinning Fathom-US.
He found significant improvement across the model’s ability to simulate regular coastal area activity and high-frequency events.
A similar modelling approach has been applied to Fathom-Japan, with a paper validating its methods currently in production.
Secondly, Fathom has worked alongside academic partners to ensure the richness of research and data within Fathom-Japan. This includes the use of data from the Global Hydrodynamics Lab, which is part of the U-Tokyo Global Hydrology Group in the Institute of Industrial Science at the University of Tokyo.
This is part of a long-standing relationship that Fathom has with researchers from the University of Tokyo, with whom they have co-authored numerous hydrological papers. You can access this research here
Finally, Fathom has validated this model against 6 observed events provided by our partner One Concern and spatial extents of flooding produced by the Geospatial Information Authority of Japan (see below).
Whilst there are limitations in aerial photography, our team found that Fathom-Japan's flood events corresponded well with the GSI's observations.