From satellite imagery to a mapped risk product
Search imagery, pass the licence gate, make scenes comparable, detect change, put exposure on H3 cells and publish a spatial risk product as tiles, with every scene and source in its lineage.
- Area and questioninstant
- Search the catalogueinstant
- Licence gateautomatic
- Make scenes comparable1 hour
- Detect change1 hour
- Exposure on H3 cells1 hour
- Spatial checksautomatic
- Analyst review1 day
- Publish as tiles and mapinstant
From satellite imagery to a mapped risk product
Search imagery, pass the licence gate, make scenes comparable, detect change, put exposure on H3 cells and publish a spatial risk product as tiles, with every scene and source in its lineage.
End to end on the longest path: about 1.1 d of proposed target service levels. Gates wait for the people named; bars with a fading end have no fixed length.
- Area and questionFind · You · instantDraw or upload an area, or pick ADM units · Event window and baseline window · Question: what changed, who and what is exposedGeocoder and entity matcher
- Search the catalogueFind · NXS-GRX run service · instantSTAC search by area, time and cloud cover · Scenes from the same sensor and processing level · Scene list kept with its queryEarth-observation pipelineGeocoder and entity matcher
- Licence gate approvalFind · NXS-GRX run service · automaticEach source checked in the licence register for the use · Rows under legal review are refused · Attribution and obligations attachedLicence register
- Make scenes comparablePrepare · NXS-GRX run service · 1 hourSame grid, CRS and resolution · Cloud, shadow and no-data masked · Processing-baseline offsets correctedEarth-observation pipeline
- Detect changeAnalyse · NXS-GRX run service · 1 hourSpectral-index differencing · Damage or change classes with thresholds stated · Masked pixels stay no-data, never zeroEarth-observation pipelineTested model kernels
- Exposure on H3 cells matrix ·Analyse · NXS-GRX run service · 1 hourPopulation and assets aggregated to H3 · Totals conserved across resolutions · Change overlaid on exposureH3 exposure kernelsTested model kernels
- Spatial checksCheck · NXS-GRX run service · automaticCRS and units checked end to end · Withheld features counted · Accuracy assessed on held-out areasVerification engineProvenance (W3C PROV)
- Analyst review approvalCheck · Analyst · 1 dayMap and figures reviewed · Limits and confidence written · Approve or send backUsage and SLO monitoring
- Publish as tiles and mapDeliver · NXS-GRX Platform · instantVector tiles at ADM and H3 · Map, legend and attribution with the product UNI · Lineage to every scene and sourceVector tilesPublic cut APINS-1 UNI catalogue
| Artifact | Job | Who | Stage |
|---|---|---|---|
| Area of interest | Area and question | You | Find |
| Scene list | Search the catalogue | NXS-GRX run service | Find |
| Licence decision | Licence gate | NXS-GRX run service | Find |
| Analysis-ready pair | Make scenes comparable | NXS-GRX run service | Prepare |
| Change raster | Detect change | NXS-GRX run service | Analyse |
| Exposure cells | Exposure on H3 cells | NXS-GRX run service | Analyse |
| Check report | Spatial checks | NXS-GRX run service | Check |
| Review record | Analyst review | Analyst | Check |
| Spatial risk product | Publish as tiles and map | NXS-GRX Platform | Deliver |
| Tiles | Publish as tiles and map | NXS-GRX Platform | Deliver |
Solutions that use this journey
11 components
Each job names the component it runs on; open a job on the canvas for its steps, checks and artifacts.
Part of NXS-GRX Data: Observations, indicators and hazard keys from licence-gated sources, harmonised, versioned and traceable to the source release.
Status
The methodology, structure and definitions of The Global Risks Index are a preparatory working draft (2026), circulated for review and comment and not for implementation. No value appears until an edition is released from a governed evidence cut; values then carry intervals, classes, sources and their correction pathway. Simulators run the published methods on numbers you choose and never show a NXS-GRX value.
What NXS-GRX is not
NXS-GRX is research and risk-analytics information. It is not a credit or ESG rating and uses no rating scale, not a benchmark for financial instruments, not official statistics, not an emergency warning or official classification, and not advice. It must not be used to evaluate natural persons. Risk classes are bands on a published scale, never rankings of countries or people.
Institutions and sources
The Nexus Consortium is stewarded by three independent not-for-profit institutions: GCRI Canada as Lead Institution, Consortium Secretariat and lead contracting organization, The Global Risks Forum (GRF) and The Global Risks Alliance (GRA). Technology, infrastructure and service providers work with the Consortium at arm's length under written agreements, like every other external party in the public-private-planet model, and hold no role in its stewardship.
Every value carries the attribution of its sources, which keep their own licences. External names are cited for interoperability only. Nexus-authored text is intended for CC BY 4.0 on release.
Avis en français
La méthodologie et les définitions du NXS-GRX sont un projet de travail préparatoire (2026). Le NXS-GRX est une information de recherche et d'analyse des risques : ni notation, ni indice de référence financier, ni statistique officielle, ni alerte, ni conseil. Les classes de risque sont des bandes sur une échelle publiée, non des classements.