Artifact CommonsAirport Accessibility Model
For every mapped place, identify the nearest facility marked as offering scheduled service.
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What it shows
- 4326: eligible aviation facilities
- 42.0 km: median place-to-facility distance
- 4585 km: largest modeled distance
Distance is geographic proximity, not travel time, route availability, border access or flight capacity. Derived place-to-airport matches are included in the collection bundle.
Method
Nearest neighbor in 3D unit-sphere coordinates; distance = 2R asin(chord/2), R=(2a+b)/3 from WGS84. Closed facilities are excluded. Places are unweighted; cross-border matches are allowed.
The collection bundle includes models/city-airport-accessibility.json with reusable derived results and stable source identifiers.
Sources and reuse
OurAirports; Natural Earth. Public domain.
Source retrieval: 2026-09-08 UTC. This is a fixed edition. Observation dates and coverage differ by source.
Inspect the immutable input snapshot for provenance and source terms. The complete bundle includes license notices and source metadata. Arcomm permits reuse and adaptation of its layouts and explanatory text with attribution. Upstream terms apply to source-derived content.