The Global Centre for Risk and Innovation (GCRI)
The methods Space and Earth Observation relies on, the assumptions they carry and the limits of what they can show.
Fig.How a finding is reviewed before it is published. Design, not a record.
The Space and Earth Observation methods page sets out the methods the platform relies on, among them Earth observation and remote sensing, space systems and satellite services, and geospatial information systems, with their assumptions, validation and limits. Each analysis lists its assumptions and data, reports ranges and confidence beside central estimates, is checked against observations or other models, and states what it cannot show.
For methods and uncertainty, in GCRI's spatial-intelligence reading, the map opens on true-colour imagery and land cover with true colour from NASA GIBS, framed on the Arctic; every other NASA layer, live feed and forecast waits in the layer list.
The interactive map needs JavaScript; the layer list and sources are below.
Layers 2
Earth observation, for this page
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Latest available
NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap contributors (ODbL) · Natural Earth
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For methods and uncertainty, in GCRI's spatial-intelligence reading, the map opens on true-colour imagery and land cover with true colour from NASA GIBS, framed on the Arctic; every other NASA layer, live feed and forecast waits in the layer list.Satellite and model products as NASA publishes them, each with its own date; indicators, not assessments of any place; claim ceiling INTEGRATED.
Layers and dates
| Source | Why it matters here | How it is reported |
|---|---|---|
| Classification accuracy | Varies with region, season and class | Accuracy assessments per product |
| Revisit and cloud | Limit what fast events are seen | Observation dates stated |
| Geolocation | Errors matter for small features | Accuracy stated |
| Sensor continuity | Missions end; records break | Record continuity noted |
Every derived map states sensor, date and accuracy.
Each analysis lists its assumptions and the data it depends on.
Ranges and confidence are reported alongside central estimates.
Models are checked against observations and, where possible, against other models.
What an analysis cannot show is stated beside what it can.
Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.
| Term | Definition |
|---|---|
| Uncertainty quantification | Characterising and propagating the uncertainties in a model to state confidence in its outputs. |
| Sensitivity analysis | Repeating an analysis under different assumptions to show how much the result depends on them. |
| Model validation | Comparing model predictions with independent observations to judge fitness for a stated use. |
| Earth observation and remote sensing | Earth observation and remote sensing gather information about the Earth's surface and atmosphere from airborne and spaceborne sensors. |
The bodies and documents this page is read against. Status and editions change; each link goes to the issuing body.
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.