SSBN Limited (trading as Fathom)
Fathom is a global flood specialist whose Global Flood Map, Global Flood Cat model and Fathom Risk Score quantify pluvial, fluvial and coastal flooding — including financial loss — using physics-based hydrodynamic modelling at up to ~10 m resolution, conditioned on IPCC scenarios to 2100. Its flood science is peer-reviewed, and data are typically integrated into clients' own systems. Now part of Swiss Re, it remains deliberately narrow but deep on flood — serving insurers, banks, investors, corporates, engineers and governments.
Vendor methodology
Public transparency, not model quality iThe Transparency Score (0–3) estimates public methodological transparency: the degree to which the vendor's analytical approach to modeling climate and nature risk can be assessed from publicly available sources. It is explicitly not a measure of vendor quality or accuracy.
Transparency leader: risk methodology is openly documented, peer-reviewed, or open-source.
Transparency leader: a public library of peer-reviewed flood-model papers documents the method with validation and uncertainty; the core models are not open-source.
Contact us to point out or add relevant source or references.
Links
iProduct page
Global flood-map product; validation and climate scenarios noted.Independent registry
Independent GARP/CFRF climate risk vendor benchmarking study.Links
iPeer-rev. / open source
Public library of peer-reviewed Fathom flood-model papers; the methodology is openly published and checkable.Peer-rev. / open source
Peer-reviewed global flood model (Wing et al., Water Resources Research).Peer-rev. / open source
Peer-reviewed high-resolution global flood hazard model.Peer-rev. / open source
Peer-reviewed global flood inundation model for any climate scenario.Peer-rev. / open source
Peer-reviewed source: FathomDEM research paper; documents terrain-data generation relevant to flood-model input quality.Peer-rev. / open source
Peer-reviewed source: shallow-water equations formulation; documents an efficient flood-inundation modelling approach.Peer-rev. / open source
Peer-reviewed climate-conditioned catastrophe flood-risk model.
