Degree Day, LLC

Hazard Explorer

Degree Day provides observation-calibrated climate intelligence for infrastructure and long-lived assets, pairing a hazard-screening platform with technical advisory for engineers, utilities, developers, asset managers and governments. Its Hazard Explorer maps 21 climate and natural-hazard layers worldwide — flood, extreme heat, wind, wildfire, drought and coastal flooding — at address and portfolio level, translating projections into design criteria and resilience requirements. Methodologically it calibrates downscaled regional climate model and ERA5 reanalysis outputs against local weather-station observations to refine extreme-event probabilities. Its expert-in-the-loop approach targets infrastructure design, screening and disclosure rather than purely automated scores.

Vendor methodology

Transparency Score

Beta

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.

2

Methodology-relevant: vendor websites or external resources explain methodological details.

Methodology-relevant: a public hazard tool (21 layers) rests on a peer-reviewed method — Rasmussen (2026), multivariate ERA5 bias-correction downscaled to 1 km, benchmarked against in-situ stations with reported RMSE skill — plus documented data sources, assumptions and uncertainty; deeper parameters proprietary.

For further information, see the section 'Transparency Score methodology' in the Readme.

Contact us to point out or add relevant source or references.