Geospatial information systems
Geospatial information systems capture, store, analyse and present location-referenced data. They provide the common spatial frame for combining hazard, exposure and vulnerability information. Space and Earth Observation stewards this page for the Nexus Consortium.
- 01InstitutionThe Global Centre for Risk and Innovation (GCRI)
- 02Service levelR0: information and enquiries
- 03In briefThe short answer
- 04The methodWhat geospatial information systems covers
- 05Reference practiceGeospatial work follows OGC standards and the UN-GGIM framework
- 06In systemic risk workLocation is the join key between systems
- 07Applied inPlatforms that apply this method
GCRI · Institution · service level R0
The short answer.
Geospatial information systems capture, store, analyse and present location-referenced data. Geospatial analysis identifies where hazards overlap critical assets and vulnerable populations. In the Nexus Consortium, Space and Earth Observation stewards its canonical page, and 8 other platforms apply it, including Water Nexus and Biodiversity Nexus.
Energy demand and corridors in the Gulf.
Where demand concentrates in cities and the rail, road and port corridors that move fuel and equipment, shown for the Gulf as an example geography for this subject.
What geospatial information systems covers.
- 01
Core methods
spatial overlay analysis; geocoding; coordinate reference management; network analysis; terrain analysis; cartographic design.
- 02
Data and instruments
vector and raster datasets; cadastral and building footprint data; digital elevation models; address registers; open map databases.
- 03
Validation
Positional and attribute accuracy are checked against surveyed control points and reference datasets. Topology rules and metadata standards ensure consistency.
- 04
Limits
Errors in projection, scale and data currency propagate through analysis. Aggregation to administrative units can mask local variation.
- 05
Use in risk decisions
Geospatial analysis identifies where hazards overlap critical assets and vulnerable populations. It supports location-based planning across infrastructure, health and finance.
Geospatial work follows OGC standards and the UN-GGIM framework.
| Reference | What it sets |
|---|---|
| Open Geospatial Consortium standards | Interoperable formats and services |
| UN Integrated Geospatial Information Framework | National geospatial information management |
| Natural Earth and OpenStreetMap | Open base data with known licences |
| STAC | Discovery of spatiotemporal data |
Location is the join key between systems.
Most cross-system analysis joins datasets by location: assets on hazard maps, people on service areas. Geospatial errors (projection mismatches, different administrative boundaries, inconsistent resolution) silently corrupt those joins. Systemic work needs a shared spatial framework and explicit handling of disputed and changing boundaries.
- Use one coordinate reference system and state it.
- Use administrative boundaries with their source and date; boundaries change.
- Account for the modifiable areal unit problem when aggregating.
- Applications on Space and Earth Observation and Nexus Foundry.
Platforms that apply this method.
- Water NexusInstitutionGCRI
- Biodiversity NexusInstitutionGCRI
- Nexus FoundryInstitutionGCRI
- Disaster Resilience and RecoveryInstitutionGCRI
- Cities and Built EnvironmentInstitutionGCRI
- Trade and Strategic ResourcesInstitutionGCRI
- Oceans and CoastsInstitutionGCRI
- Space and Earth ObservationInstitutionGCRI
- Development Finance NexusInstitutionGRA
Who maintains this page.
Space and Earth Observation stewards geospatial information systems: it keeps this description current and reviews how the method is applied across the platforms.
Terms used on this page.
Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.
| Term | Definition |
|---|---|
| Project footprint | The area a project occupies or directly affects, including access roads and ancillary works. |
| Critical habitat | Areas of high biodiversity value defined under IFC Performance Standard 6. |
| Gridded population | Population estimates distributed on a regular grid, such as WorldPop. |
| Exposure | The people, infrastructure, housing, production capacities and other tangible assets located in hazard-prone areas, in UNDRR terminology. |
Where this page's references lead.
The bodies and documents this page is read against. Status and editions change; each link goes to the issuing body.
Where this page leads across the Consortium.
- GIS for water riskGCRIApplied in Water Nexus.
- Geospatial analysis for biodiversityGCRIApplied in Biodiversity Nexus.
- Geospatial infrastructure at Nexus FoundryGCRIApplied in Nexus Foundry.
- Geospatial methods for disastersGCRIApplied in Disaster Resilience and Recovery.
- Geospatial methods for citiesGCRIApplied in Cities and Built Environment.
- Geospatial analysis for supply chainsGCRIApplied in Trade and Strategic Resources.
- Geospatial analysis for oceans and coastsGCRIApplied in Oceans and Coasts.
- Geospatial integrationGCRIApplied in Space and Earth Observation.
- Geospatial analysis for development financeGRAApplied in Development Finance Nexus.
Questions and answers.
Why does one institution host every method page?
How do I suggest a correction to a method page?
Around GCRI.
Start with an enquiry.
The current service level is R0: information and enquiries. An enquiry receives a reference and names the next step; applications, payments, compute allocations and registrations open only when their team, terms and review capacity exist.